1Z0-593 exam Dumps Source : Oracle actual Application Clusters 11g Essentials
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Test title : Oracle actual Application Clusters 11g Essentials
Vendor title : Oracle
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This chapter introduces Oracle Clusterware and Oracle precise utility Clusters (Oracle RAC) via describing these items as well as a course to install, administer, and set up them. This chapter describes Oracle Clusterware and Oracle RAC architectures as well as the utility and hardware add-ons for both of these items. This chapter additionally in brief describes workload administration, features, and extreme availability for both single-example Oracle databases and Oracle RAC environments. This chapter includes the following topics:Oracle Clusterware and Oracle proper application Clusters
A cluster includes multiple interconnected computer systems or servers that issue like they're one server to conclusion users and purposes. Oracle Database 10g proper utility Clusters (Oracle RAC) allows the clustering of the Oracle Database. Oracle RAC makes consume of Oracle Clusterware for the infrastructure to bind multiple servers so that they operate as a solitary system.
Oracle Clusterware is a portable cluster administration solution it really is built-in with the Oracle database. The Oracle Clusterware is also a required component for using Oracle RAC. additionally, Oracle Clusterware enables both single-illustration Oracle databases and Oracle RAC databases to consume the Oracle towering availability infrastructure. The Oracle Clusterware makes it practicable for you to create a clustered pool of storage for consume by course of any composite of single-illustration and Oracle RAC databases.
Oracle Clusterware is the most efficient clusterware that you simply exigency for many systems on which Oracle RAC operates. which you can also consume clusterware from different vendors if the clusterware is certified for Oracle RAC.
Single-example Oracle databases absorb a one-to-one relationship between the Oracle database and the example. Oracle RAC environments, although, absorb a one-to-many relationship between the database and circumstances. In Oracle RAC environments, the cluster database cases entry one database. The mixed processing verve of the discrete servers can supply enhanced throughput and scalability than is accessible from a solitary server. Oracle RAC is the Oracle Database option that gives a solitary device picture for dissimilar servers to access one Oracle database. In Oracle RAC, each Oracle instance constantly runs on a sever server.
Oracle RAC is a different know-how that provides extreme availability and scalability for everysingle application forms. The Oracle RAC infrastructure is also a key component for enforcing the Oracle traffic grid computing architecture. Having distinctive situations access a solitary database prevents the server from being a solitary ingredient of failure. Oracle RAC allows for you to mix smaller commodity servers right into a cluster to create scalable environments that back mission distinguished enterprise functions. applications that you just installation on Oracle RAC databases can operate without code alterations.The Oracle Clusterware architecture and Oracle Clusterware Processing
The Oracle Clusterware is software that after installed on servers running the equal working device, enables the servers to live positive together to operate as if they absorb been one server. The Oracle Clusterware requires two clusterware accessories: a voting disk to list node membership assistance and the Oracle Cluster Registry (OCR) to record cluster configuration assistance. The balloting disk and the OCR must dwell on shared storage. The Oracle Clusterware requires that every node live connected to a non-public network by course of a non-public interconnect.
The private interconnect that Oracle Clusterware requires is a sever community that you just configure between the cluster nodes. This interconnect, which is required by means of Oracle RAC, can also live the selfsame community that the clusterware makes consume of, but the interconnect should noiseless no longer live obtainable by course of nodes that aren't a section of the cluster.
Oracle recommends that you configure a redundant interconnect to support away from the interconnect from being a solitary ingredient of failure. Oracle also recommends that you simply consume user Datagram Protocol (UDP) on a Gigabit Ethernet in your cluster interconnect. Crossover cables aren't supported for consume with Oracle Clusterware or Oracle RAC databases.
The Oracle Clusterware manages node membership and prevents prick up mind syndrome during which two or greater instances try to manage the database. this may chance in instances where there's a damage in verbal exchange between nodes throughout the interconnect.
The Oracle Clusterware structure supports extreme availability by course of immediately restarting stopped add-ons. The Oracle Clusterware can immediately re-start a node to steer pellucid of complications with that node from affecting the supply of the relaxation of the Oracle RAC ambiance. In an Oracle RAC atmosphere, everysingle Oracle methods are below the manage of the Oracle clusterware. The Oracle Clusterware also provides an software programming interface (API) that permits you to control other Oracle approaches with Oracle Clusterware.Oracle Clusterware application ingredient Processing particulars
The Oracle Clusterware includes several legacy techniques that facilitate cluster operations. The Cluster Synchronization carrier (CSS), adventure management (EVM), and Oracle Cluster components speak with other cluster component layers in the other situations in the selfsame cluster database environment. These add-ons are also the main conversation hyperlinks between the Oracle Clusterware towering availability components and the Oracle Database. additionally, these add-ons panoply screen and control database operations.
the following record describes the functions of some of the main Oracle Clusterware components. This record comprises these add-ons that are approaches on Unix and Linux working techniques or services on windows.
word:On home windows-primarily based working techniques, many of the components are threads of the Oracle technique instead of sever strategies.
Cluster Synchronization features (CSS)—Manages the cluster configuration with the aid of controlling which nodes are members of the cluster and by notifying individuals when a node joins or leaves the cluster. if you are the usage of third-celebration clusterware, then the css mode interfaces together with your clusterware to control node membership assistance.
Cluster competent services (CRS)—The basic software for managing extreme availability operations within a cluster. anything else that the crs mode manages is called a cluster useful resource which could live a database, an instance, a provider, a Listener, a virtual IP (VIP) address, an utility procedure, etc. The crs manner manages cluster substances in keeping with the aid's configuration assistance that's saved in the OCR. This comprises beginning, cease, video panoply and failover operations. The crs technique generates movements when a resource reputation adjustments. in case you absorb attach in Oracle RAC, crs screens the Oracle instance, Listener, and so forth, and immediately restarts these accessories when a failure happens. via default, the crs mode makes five makes an attempt to restart a useful resource after which doesn't contour extra restart attempts if the resource doesn't restart.
event administration (EVM)—A history mode that publishes routine that crs creates.
Oracle Notification service (ONS)—A publish and subscribe carrier for speaking quick application Notification (FAN) movements.
RACG—Extends clusterware to guide Oracle-selected requirements and sophisticated supplies. Runs server callout scripts when FAN pursuits gyrate up.
procedure video panoply Daemon (OPROCD)—This manner is locked in memory to monitor the cluster and provide I/O fencing. OPROCD performs its determine, stops running, and if the wake up is past the anticipated time, then OPROCD resets the processor and reboots the node. An OPROCD failure consequences in Oracle Clusterware restarting the node. OPROCD makes consume of the hangcheck timer on Linux structures.
In the following table, if a technique has a (r) beside it, then the procedure runs as the root person. in any other case the mode runs as the oracle user.
table 1-1 record of strategies and home windows features associated with Oracle ClusterwareOracle Clusterware element Linux/Unix method windows amenitiesWindows procedures
process monitor Daemon
Oracle Notification provider (ONS)
evmd (r), evmd.bin, evmlogger
Cluster Synchronization capabilities
init.cssd (r), ocssd (r), ocssd.bin
ocssd.exeThe Oracle Clusterware application accessories
When Oracle Clusterware operates, a number of platform-selected approaches or capabilities will also live working on each and every node within the cluster to succor Oracle Clusterware. The Oracle Clusterware platform-certain UNIX-primarily based methods and windows-primarily based capabilities are described under here headings:Oracle Clusterware processes on UNIX-based mostly techniques
The Oracle Clusterware methods on UNIX-based systems are:
crsd—Performs towering availability healing and management operations similar to preserving the OCR and managing utility supplies. This manner runs as the root person, or by using a person within the admin group on Mac OS X-primarily based techniques. This manner restarts immediately upon failure.
evmd—event supervisor daemon. This mode additionally begins the racgevt procedure to exploit FAN server callouts.
ocssd—Manages cluster node membership and runs because the oracle consumer; failure of this process consequences in cluster restart.
oprocd—manner panoply screen for the cluster. notice that this mode handiest looks on systems that don't consume vendor clusterware with Oracle Clusterware.
be aware:Oracle RAC on Linux platforms can absorb dissimilar threads that look as sever techniques with sever system identifiers. Oracle Clusterware services on windows-based systems
The Oracle Clusterware functions on home windows-based methods are:
OracleCRService—Performs extreme availability recovery and administration operations reminiscent of keeping the OCR and managing software supplies. This process runs as the root consumer, or by using a person in the admin group on Mac OS X-based techniques. This process restarts immediately upon failure.
OracleCSService—Manages cluster node membership and runs as oracle consumer; failure of this technique results in cluster restart.
OracleEVMService—experience supervisor daemon. This procedure additionally starts the racgevt system to control FAN server callouts.
OraFenceService—technique monitor for the cluster. keep that this procedure most efficient seems on systems that don't consume supplier clusterware with Oracle Clusterware.
An Oracle RAC database is a logically or physically shared every thing database. everysingle datafiles, control info, PFILEs, and redo log files in Oracle RAC environments ought to abide on cluster-aware shared disks so that everysingle the cluster database cases can entry them. the entire situations should also participate the selfsame interconnect. additionally, Oracle RAC databases can participate the identical interconnect that Oracle Clusterware uses.
as a result of an Oracle RAC database makes consume of a shared everything architecture, Oracle RAC requires cluster-conscious storage for everysingle database information. it's your option as to the course to configure your disk, but you should consume a supported cluster-aware storage solution. Oracle Database 10g gives computerized Storage management (ASM), which is the suggested solution to exploit your disk. however you might also also consume a cluster-mindful extent supervisor or a cluster file rig (now not required). In Oracle RAC, the Oracle Database application manages disk access and the Oracle software is certified to live used on a total lot of storage architectures. An Oracle RAC database can absorb as much as a hundred instances. counting on your platform, that you can consume right here file storage alternate options for Oracle RAC:
ASM, which Oracle recommends
Oracle Cluster File rig (OCFS), which is accessible for Linux and windows structures, or a 3rd-birthday celebration cluster file system that is certified for Oracle RAC
A community file gadget
Oracle RAC databases sweep architecturally from Oracle RACsingle-instance Oracle databases in that every Oracle RAC database instance also has:
All nodes in an Oracle RAC ambiance exigency to hook up with a indigenous district network (LAN) to allow users and purposes to access the database. functions should consume the Oracle Database services feature to connect to an Oracle database. services enable you to define suggestions and traits to manage how clients and purposes connect to database cases. These traits include a unique name, workload balancing and failover options, and extreme availability qualities. Oracle internet capabilities allows the weight balancing of utility connections throughout the entire circumstances in an Oracle RAC database.
users can entry an Oracle RAC database using a shopper-server configuration or through one or more center tiers, with or without connection pooling. users can also live DBAs, developers, utility users, energy users, such as records miners who create their personal searches, and the like.
Most public networks customarily consume TCP/IP, however which you could consume any supported hardware and utility mixture. Oracle RAC database instances can live accessed via a database's defined, default IP handle and through VIP addresses.
word:do not to contour consume of the interconnect or the private community for person communication as a result of Cache Fusion uses the private interconnect for inter-instance communications.
moreover the node's host title and IP handle, you should also assign a digital host identify and an IP handle to each and every node. The virtual host identify or VIP should live used to hook up with the database example. for instance, you may enter the digital host title CRM within the handle checklist of the tnsnames.ora file.
A digital IP handle is another public tackle that client connections consume in its state of the typical public IP tackle. To configure VIP addresses, you exigency to reserve a spare IP address for every node that uses the selfsame subnet because the public community.
If a node fails, then the node's VIP fails over to one other node on which the VIP can not settle for connections. generally, VIPs fail over when the node on which a VIP runs fails or if everysingle interfaces for the VIP fail or are disconnected from the community. shoppers that attempt to connect to the VIP salvage hold of a quick connection refused mistake as a substitute of awaiting TCP combine timeout messages. You configure VIP addresses within the handle listing in your database connection definition to enable connectivity. the following district describes the Oracle RAC software components in more detail.The Oracle precise utility Clusters application accessories
Oracle RAC databases absorb two or greater database situations that every include memory constructions and history procedures. An Oracle RAC database has the equal methods and reminiscence constructions as a single-illustration Oracle database in addition to additional mode and reminiscence structures that are particular to Oracle RAC. any one instance's database view is well-nigh similar to any other instance's view in the identical Oracle RAC database; the view is a solitary rig picture of the ambiance.
every illustration has a buffer cache in its rig global district (SGA). the usage of Cache Fusion, Oracle RAC environments logically mix each example's buffer cache to enable the instances to system records as if the facts resided on a logically combined, solitary cache.
notice:The SGA size necessities for Oracle RAC are more desirable than the SGA requirements for single-instance Oracle databases because of Cache Fusion.
To contour inevitable that each Oracle RAC database instance obtains the obscure that it must fulfill a question or transaction, Oracle RAC situations consume two processes, the global Cache carrier (GCS) and the world Enqueue carrier (GES). The GCS and GES support information of the statuses of each information file and every cached obscure the usage of a global aid listing (GRD). The GRD contents are distributed throughout everysingle the energetic cases, which easily raises the dimension of the device world enviornment for an Oracle RAC example.
After one instance caches information, some other instance within the selfsame cluster database can purchase a obscure graphic from an extra instance in the equal database sooner than through analyzing the obscure from disk. therefore, Cache Fusion strikes present blocks between cases as opposed to re-studying the blocks from disk. When a consistent obscure is needed or a changed obscure is required on yet another illustration, Cache Fusion transfers the obscure graphic directly between the affected situations. Oracle RAC makes consume of the inner most interconnect for inter-illustration verbal exchange and obscure transfers. The world Enqueue service video panoply and the illustration Enqueue process manages entry to Cache Fusion components in addition to enqueue recuperation processing.
These Oracle RAC procedures and the GRD collaborate to permit Cache Fusion. The Oracle RAC methods and their identifiers are as follows:
LMS—international Cache carrier technique
LMD—international Enqueue carrier Daemon
LMON—world Enqueue service computer screen
LCK0—instance Enqueue manner
if you consume network connected Storage (NAS), then you definitely are required to configure a second private community. access to this community is customarily managed through the dealer's application. The inner most network makes consume of static IP addresses.
observe:lots of the Oracle add-ons that this district describes are apart from the components which are described for single-illustration Oracle databases in Oracle Database concepts. Oracle Clusterware accessories and towering Availability
if you chance to mix Oracle Clusterware and Oracle RAC, that you could achieve outstanding scalability and extreme availability. The Oracle Clusterware achieves this the usage of the accessories that this district describes under here topics:The Oracle Clusterware vote casting Disk and Oracle Cluster Registry
The Oracle Clusterware requires the following two essential information:
vote casting Disk—Manages cluster membership by means of a fitness investigate and arbitrates cluster ownership among the situations in case of network disasters. Oracle RAC uses the balloting disk to assess which circumstances are members of a cluster. The balloting disk must abide on shared disk. for prime availability, Oracle recommends that you've varied voting disks. The Oracle Clusterware allows for dissimilar balloting disks but you ought to absorb an outlandish variety of voting disks, equivalent to three, five, and the like. if you define a solitary voting disk, then live positive to consume exterior mirroring to provide redundancy.
Oracle Cluster Registry (OCR)—keeps cluster configuration suggestions as well as configuration guidance about any cluster database inside the cluster. The OCR additionally manages counsel about tactics that Oracle Clusterware controls. The OCR shops configuration tips in a progression of key-value pairs inside a listing tree constitution. The OCR must abide on shared disk it truly is attainable with the aid of the entire nodes in your cluster. The Oracle Clusterware can multiplex the OCR and Oracle recommends that you just consume this characteristic to contour positive cluster towering availability. that you would live able to change a failed OCR on-line, and you'll supersede the OCR via supported APIs reminiscent of traffic supervisor, the Server manage Utility (SRVCTL), or the Database Configuration lieutenant (DBCA).
notice:each the balloting disks and the OCRs ought to dwell on either cluster file system files or on shared raw devices that you configure before you install Oracle Clusterware and Oracle RAC. Oracle Clusterware extreme Availability and the application Programming Interface
Oracle Clusterware provides a extreme availability utility programming interface (API) so that you can consume to permit Oracle Clusterware to control functions or tactics that elope a cluster. This permits you to deliver extreme availability for everysingle your purposes. The Oracle Clusterware with ASM permits you to create a consolidated pool of storage to guide both the one-illustration Oracle databases and the Oracle RAC databases that are operating on your cluster.
To hold extreme availability, Oracle Clusterware add-ons can respond to repute alterations to restart functions and tactics in line with defined extreme availability suggestions. moreover, which you could consume the Oracle Clusterware extreme availability framework by using registering your applications with Oracle Clusterware and configuring the clusterware to start, stop, or relocate your software approaches. it's, you can contour customized applications totally accessible through the consume of Oracle Clusterware to create profiles that video display, relocate, and restart your functions. The Oracle Clusterware responds to FAN events that are created with the aid of an Oracle RAC database. Oracle announces FAN events when cluster servers may additionally gyrate into unreachable and network interfaces are laggard or non-practical.Workload administration with Oracle actual utility Clusters
Workload administration makes it practicable for you to exploit the distribution of workloads to provide gold benchmark efficiency for clients and purposes. This contains proposing the maximum availability for database connections, expeditiously failure recovery, and balancing workloads optimally across the energetic configuration. Oracle Database 10g with Oracle RAC comprises many points that can raise workload management akin to connection load balancing, quick connection failover (FCF), the load balancing advisory, and Runtime Connection Load Balancing. Workload management gives the most excellent merits to Oracle RAC environments. that you could, youngsters, win talents of workload management by using Oracle functions in single-illustration Oracle Databases, primarily people that consume facts protect or Streams. Workload administration includes here add-ons:
excessive Availability Framework—The Oracle RAC towering availability framework allows the Oracle Database to retain components in a running state always. Oracle towering availability implies that Oracle Clusterware monitors and restarts captious components if they stop, unless you override the restart processing. The Oracle Clusterware and Oracle RAC additionally provide alerts to purchasers when configurations exchange. This enables purchasers to immediately react to the alterations, enabling application builders to cover outages and reconfigurations from immediate users. The scope of Oracle towering availability spans from the restarting of stopped Oracle tactics in an Oracle database instance to failing over the processing of a total instance to other accessible situations.
Load Balancing Advisory—this is the means of the database to give assistance to purposes concerning the current provider ranges being provided with the aid of the database and its cases. functions can win edge of this counsel to direct connection requests to the instance so that it will supply the software request with the most efficient provider satisfactory to comprehensive the application's processing. Oracle has integrated its Java Database Connectivity (JDBC) and Oracle information company for .web (ODP.net) connection swimming pools to work with the weight balancing counsel. functions can consume the integrated connection pools without programmatic changes.
functions—Oracle Database 10g introduces a powerful automated workload management facility, called services, to allow the traffic grid vision. functions are entities that you can silhouette in Oracle RAC databases. capabilities enable you to community database workloads and route the work to the surest circumstances that are assigned to technique the provider. furthermore, you could consume services to silhouette the resources that Oracle assigns to technique workloads and to computer screen workload resources. purposes that you just assign to functions transparently purchase the described workload management qualities, together with extreme availability and load balancing suggestions. Many Oracle database aspects are built-in with functions, comparable to useful resource supervisor, which makes it practicable for you to preclude the supplies that a service can consume inside an illustration. Some database points are additionally integrated with Oracle Streams, superior Queuing, to obtain queue location transparency, and the Oracle Scheduler, to map capabilities to particular job courses.
In Oracle RAC databases, the service performance guidelines that you just configure control the amount of labor that Oracle allocates to every accessible instance for that provider. As you extend your database through adding nodes, functions, add-ons of functions, and so on, which you could add extra services.
Connection Load Balancing— Oracle web capabilities provides connection load balancing for database connections. Connection load balancing happens when the connection is created. Connections for a given provider are balanced throughout the entire working situations that proffer the carrier. bethink to silhouette the course you want connections to live balanced within the service definition. although, you ought to noiseless configure Oracle web capabilities. in case you allow the cross balancing advisory, the Listener uses the load balancing advisory for connection load balancing.
This district introduces the storage alternate options for Oracle RAC and the installation approaches for both Oracle Clusterware and Oracle RAC beneath the following issues:Oracle Clusterware setting up procedure Description
The Oracle Clusterware is allotted on the Oracle Database 10g installing media. The Oracle customary Installer (OUI) installs Oracle Clusterware right into a directory constitution, which can live called CRS_home, it really is become independent from other Oracle software operating on the laptop. as a result of Oracle Clusterware works intently with the working equipment, device administrator entry is required for some of the installation projects. moreover, one of the most Oracle Clusterware procedures should elope because the gadget administrator, which is often the basis person on Unix and Linux systems and the gadget Administrator person on windows methods.
before you install Oracle Clusterware, Oracle recommends that you just elope the Cluster Verification Utility (CVU) to contour inevitable that your ambiance meets the Oracle Clusterware setting up necessities. The OUI additionally immediately runs CVU on the immediate of the clusterware setting up to determine numerous clusterware accessories. The CVU simplifies the installation, configuration, and gardenvariety administration of the Oracle Clusterware installation manner by course of making a option on complications in cluster environments.
all the course through the Oracle Clusterware setting up, you absorb to identify three IP addresses for every node that goes to live a section of your setting up. One IP handle is for the deepest interconnect and the different is for the common public interconnect. The third IP address is the digital IP handle that purchasers will consume to hook up with each and every example.
The Oracle Clusterware setting up manner creates the vote casting disk and OCR on cluster-conscious storage. in case you opt for the option for regular redundant copies throughout the installation method, then Oracle Clusterware automatically maintains redundant copies of these data to evade the data from fitting solitary features of failure. The gardenvariety redundancy characteristic also eliminates the want for third celebration storage redundancy solutions. when you consume average redundancy, Oracle Clusterware automatically continues two copies of the Oracle Cluster Registry (OCR) file and three copies of the balloting Disk file.
notice:if you opt for exterior redundancy for the OCR and vote casting disk, then to allow redundancy, your disk subsystem absorb to live configurable for RAID mirroring. otherwise, your rig may well live susceptible since the OCR and vote casting disk are solitary aspects of failure. Oracle actual software Clusters setting up and Database creation procedure Description
The Oracle RAC application is allotted as a section of the Oracle Database 10g installation media. by default, the average Oracle Database 10g application installation process installs the Oracle RAC option when it recognizes that you are performing the installing on a cluster. The OUI installs Oracle RAC into a listing constitution, which can live known as Oracle_home, that is smash away other Oracle utility running on the computer. because OUI is cluster-aware, it installs the Oracle RAC software on everysingle the nodes that you just described to live section of the cluster. if you're using a certified cluster file rig for the Oracle domestic, then most efficient select the node that you are connected to for the setting up.
You must first set up Oracle Clusterware before installation Oracle RAC. After Oracle Clusterware is operational, you could consume OUI to installation the Oracle database application with the Oracle RAC add-ons. throughout the installation, OUI runs DBCA to create your Oracle RAC database in accordance with the alternate options that you simply select. The DBCA additionally runs the net Configuration lieutenant (NETCA) to configure the network on your Oracle RAC environment.
Oracle recommends that you opt for ASM everysingle the course through the setting up to simplify storage administration; ASM automatically manages the storage of everysingle database info inside disk organizations. that you can also configure capabilities throughout setting up, depending on your processing necessities. when you are using the Oracle Database 10g common edition, then you definitely should consume ASM for storing everysingle of the database files.
by default, DBCA creates one service in your environment and this carrier is for the database. The default provider is purchasable on everysingle instances in an Oracle RAC environment, except the database is in restrained mode.Cloning Oracle Clusterware and Oracle RAC utility in Grid Environments
This section in short summarizes the strategies for deploying Oracle RAC in grid environments which absorb large numbers of nodes using cloned photos for Oracle Clusterware and Oracle RAC. Oracle cloning is the favored mode of extending your Oracle RAC atmosphere through including nodes and situations. To accomplish the cloning procedures that are summarized during this part, hunt counsel from the Oracle habitual Installer and OPatch user's book.that you would live able to additionally consume traffic manager Grid manage to accomplish cloning.
The cloning technique assumes that you efficaciously attach in an Oracle Clusterware home and an Oracle domestic with Oracle RAC on as a minimum one node. additionally, everysingle root scripts exigency to absorb elope successfully on the node from which you're extending your cluster database. to consume Oracle cloning, first clone the Oracle Clusterware home and then clone the Oracle home with the Oracle RAC utility.
To clone the Oracle Clusterware home, on UNIX-primarily based methods create a tar file of the Oracle Clusterware home and copy the file to the original node's Oracle Clusterware home. On windows-based mostly programs you absorb to create zip files. Then on UNIX-based mostly methods create the required clients and organizations on the original nodes. On windows-based mostly programs, you execute not exigency to create users and companies, but the user that performs the cloning should noiseless live the identical person that performed the setting up.
Extract the tar file, or unzip the zip file, and elope the Oracle commonplace Installer (OUI) in clone mode as described in the Oracle time-honored Installer and OPatch user's ebook. Then elope the setting up scripts and repeat these steps on each node that you are including. The technique for cloning the Oracle home onto original nodes is akin to the technique for cloning the Oracle Clusterware domestic. in addition, you must elope the Oracle internet Configuration lieutenant (NETCA) on every original node to create a Listener.
if you haven't already created a database, then that you may elope the Database Configuration lieutenant (DBCA) to create one. finally, keep the submit-cloning techniques to comprehensive the extension of your Oracle RAC ambiance onto the brand original nodes.further issues and lines for Oracle actual software Clusters
besides configuring features to control your workloads, additionally correspond with the usage of here facets for those who install Oracle RAC:
Scaling Your Oracle RAC Database—As outlined, which you can add nodes and circumstances to your Oracle RAC environment the usage of Oracle cloning. if you elect to no longer consume cloning, then you could lengthen your database through the consume of the manual procedures that are described in Chapter 10, "including and Deleting Nodes and situations on UNIX-based mostly methods" or Chapter eleven, " adding and Deleting Nodes and situations on home windows-primarily based techniques".
enterprise supervisor—Use enterprise manager to manage your complete Oracle RAC environment, now not just the Oracle RAC database. consume commercial enterprise manager to create and alter functions, and to beginning and forestall the cluster database situations and the cluster database. enterprise manager has additional features as designated within the district "Overview of the consume of traffic supervisor with Oracle precise utility Clusters".
recuperation manager (RMAN)—RMAN backs up, restores, and recovers datafiles, control files, server parameter data (SPFILEs) and archived redo logs. which you can consume RMAN with a media supervisor to lower back up files to exterior storage. you could additionally configure parallelism when backing up or convalescing Oracle RAC databases. In Oracle RAC, RMAN channels will also live dynamically allotted throughout everysingle of the Oracle RAC circumstances. Channel failover allows failed operations on one node to proceed on an extra node. which you could consume RMAN in Oracle RAC from the Oracle traffic supervisor Backup manager or from a command line.
automatic undo administration—automatically manages undo processing.
automatic side district management (ASSM)—immediately manages side freelists and freelist groups.
in the neighborhood managed tablespaces—Enhances space management efficiency.
Cluster Verification Utility (CVU)—Use CVU to determine the fame of your clusterware in case you journey problems or consume it whenever you reconfigure your cluster.
Sequences—in case you consume sequence numbers, then everysingle the time consume CACHE with the NOORDER option for top-rated sequence quantity era performance. With the CACHE alternative, despite the fact, you may additionally absorb gaps in the sequence numbers. in case your environment can not tolerate sequence quantity gaps, then consume the NOCACHE option or trust pre-generating the sequence numbers. in case your utility requires sequence quantity ordering but can tolerate gaps, then consume CACHE and ORDER to cache and order sequence numbers in Oracle RAC. in case your utility requires ordered sequence numbers devoid of gaps, then consume NOCACHE and ORDER. This aggregate has essentially the most indigent consequence on performance in comparison to different caching and ordering combinations.
Indexes—in case you consume indexes, correspond with alternatives, akin to invert key indexes, to optimize index efficiency. invert key indexes are specifically efficient if in case you absorb common inserts to 1 facet of an index, similar to indexes which are in keeping with insert date.
This section describes right here Oracle RAC ambiance administration themes:Designing Oracle proper application Clusters Environments
trust performing the following steps right through the design and progress of functions that you are deploying on an Oracle RAC database. accept as proper with tuning:
The design and the software
The reminiscence and i/O
The working device
word:If an application does not scale on an SMP computing device, then affecting the utility to an Oracle RAC database can't enhance efficiency.
believe using hash partitioning for insert-intensive online transaction processing (OLTP) purposes. Hash partitioning:
Reduces competition on concurrent inserts right into a solitary database constitution
influences sequence-primarily based indexes when indexes are locally partitioned with a table and tables are partitioned on sequence-based mostly keys
Is pellucid to the application
if you hash partitioned tables and indexes for OLTP environments, then that you could vastly enrich performance to your Oracle RAC database. keep that you simply can not consume index sweep scans on an index with hash partitioning.
if you're the usage of sequence numbers, then at everysingle times consume the CACHE choice. if you consume sequence numbers with the CACHE option, then:Administrative rig for Oracle precise application Clusters Environments
Oracle allows you to manage a cluster database as a solitary system image via commercial enterprise manager, SQL*Plus, or through Oracle RAC command-line interfaces akin to Server handle (SRVCTL). that you can additionally consume a number of tools and utilities to control your Oracle RAC environment and its accessories as follows:
enterprise manager—commercial enterprise manager has each the Database manage and Grid control GUI interfaces for managing each solitary instance and Oracle RAC environments.
Cluster Verification Utility (CVU)—CVU is a command-line instrument that you can consume to determine a sweep of cluster and Oracle RAC-selected add-ons such as shared storage devices, networking configurations, device requirements, and Oracle Clusterware, as well as working rig businesses and clients. that you can consume CVU for pre-installation assessments as well as for publish-installation checks of your cluster environment. CVU is particularly advantageous everysingle through pre-installation and everysingle through installation of Oracle Clusterware and Oracle RAC add-ons. The OUI runs CVU after Oracle Clusterware and the Oracle installing to verify your ambiance.
Server control (SRVCTL)—SRVCTL is a command-line interface so you might consume to exploit an Oracle RAC database from a solitary point. you can consume SRVCTL to start and stop the database and cases and to delete or tide circumstances and services. you can additionally consume SRVCTL to control configuration information.
See additionally:Appendix E for greater counsel about SRVCTL
Cluster competent services manage (CRSCTL)—CRSCTL is a command-line device that you can consume to exploit Oracle Clusterware. that you would live able to consume CRSCTL to birth and forestall Oracle Clusterware. CRSCTL has many alternate options such as enabling online debugging,
Oracle Interface Configuration instrument (OIFCFG)—OIFCFG is a command-line device for each single-instance Oracle databases and Oracle RAC environments so that you can consume to allocate and de-allocate network interfaces to accessories. that you could additionally consume OIFCFG to direct add-ons to contour consume of selected network interfaces and to retrieve component configuration tips.
OCR Configuration instrument (OCRCONFIG)—OCRCONFIG is a command-line device for OCR administration. that you can additionally consume the OCRCHECK and OCRDUMP utilities to troubleshoot configuration complications that absorb an consequence on the OCR.
net-based enterprise manager Database handle and Grid control permit you to video panoply an Oracle RAC database. The commercial enterprise supervisor Console is a central ingredient of manage for the Oracle atmosphere that you access by means of a graphical user interface (GUI). consume the traffic supervisor Console to incite cluster database management tasks. consume traffic supervisor Grid manage to manage diverse Oracle RAC databases. additionally note the following elements about monitoring Oracle RAC environments:
The world views, or GV$ views, are in response to V$ views. The catclustdb.sql script creates the GV$ views. elope this script in case you execute not create your database with DBCA. otherwise, DBCA runs this script for you.
Statspack is Oracle RAC-aware.
be aware:instead of the usage of Statspak, Oracle recommends that you just consume the extra sophisticated administration and monitoring aspects of the Oracle Database 10g Diagnostic and Tuning packs which encompass the automatic Database Diagnostic computer screen (ADDM).
You execute not deserve to duty particular tuning for Oracle RAC; Oracle RAC scales with out particular configuration adjustments. in case your software carried out neatly on a single-instance Oracle database, then it's going to operate neatly in an Oracle RAC atmosphere. lots of the tuning projects that you'd accomplish on a single-illustration Oracle database can also enlarge Oracle RAC database performance. here is especially proper in case your atmosphere required scalability across a more suitable variety of CPUs.
some of the Oracle RAC performance elements are:
Dynamic resource Allocation
Cache Fusion allows A Simplified Tuning Methodology
You don't absorb to tune any parameters for Cache Fusion
No utility-degree tuning is integral
which you could consume a backside-up tuning strategy with almost no consequence for your current applications
extra targeted performance records
source: Oracle agency
November 15, 2010 08:00 ET
Simplifies Deployment of a enormously accessible, Virtualized Database
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entertaining aggregate of Virtualization and Clustering Speeds Time to Market and makes it practicable for larger Availability
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Oracle Database 11g Release 2 is available and downloadable recently from the Oracle Technology Network (OTN). This latest generation of the world’s #1 database builds on the innovations introduced in Oracle Database 11g to succor organizations deliver better information throughout the enterprise, at a higher character of service, and at a much lower cost.
In this release, Oracle actual Application Clusters (RAC) delivers grid plug and play and original server pooling capabilities that enable organizations to reduce their server costs by streamlining the provisioning and management of consolidated database grids.
Oracle RAC One Node, a original Database option, is available. Oracle RAC One Node is a solution that allows customers to more easily consolidate their less mission captious database environments on the grid with most of the redundancy and availability provided by Oracle actual Application Clusters.
The combination of Oracle Database 11g Release 2 Advanced Compression and Partitioning supports the reduction of storage costs by compressing data as much as 2-4x and simplifying consume of lower cost storage tiers.
“Our customers want features that proffer better performance and availability, lower IT costs and ways to deliver better information to their traffic users,” said Andy Mendelsohn, Senior Vice President of Database Server Technologies, Oracle. “The availability of Release 2 completes the vision of Oracle Database 11g to address today’s traffic and IT challenges, and continues their strategy of helping customers deliver the highest character of service at lower cost.”
To read full press release, click here.
This BeyeNETWORK intelligence item contains information from a recent press release by the company mentioned.
Data Storage EquipmentImproves Database Performance and Enables Deployment of Larger Oracle Database Clusters; Postbank Deploys Solution for Retail Banking Application
ORACLE OPENWORLD, San Francisco, Calif. - November 12, 2007 - Voltaire Ltd. (NASDAQ: VOLT), a leading provider of grid backbone solutions for the data center, today announced that its InfiniBand-based solutions are available for Oracle® actual Application Clusters 11g. The combination of Oracle actual Application Clusters running on Voltaire's InfiniBand-based switches and software delivers faster application-level performance than clusters using Ethernet. The solution also enables greater scalability so customers can deploy larger Oracle Database clusters than ever before.
Postbank, one of the largest retail banks in Germany and a beta customer of the latest release of Oracle actual Applications Clusters, has tested their cash withdrawal processing application running on HP Proliant servers interconnected with a Voltaire Grid Switch(TM) 20 Gigabits/second InfiniBand switch. Postbank's application, which relies heavily on the performance of the cluster interconnect, has experienced a 50 percent boost in performance using the combined Oracle-Voltaire solution.(*)
"We are very pleased with the performance and scalability that Voltaire InfiniBand brings to Oracle actual Application Clusters in their large Oracle Database environment," said Jens-Christian Pokolm, Analyst IT Services, Postbank. "To deliver the best and most trustworthy service to their customers, their applications claim expeditiously access to data and this solution truly delivers. An distinguished capability this solution provides is the aptitude to liquidate latency and scale their Oracle Database applications."
"We are pleased to work with Voltaire to bring the industry benchmark OpenFabrics trustworthy Datagram Sockets (RDS) over InfiniBand solution to the Oracle database environment," said Juan Loaiza, Senior Vice President, Oracle. "We believe that the OpenFabrics endeavor is crucial to the success of towering performance networking protocols and applaud Voltaire's back of this effort."
The OpenFabrics Alliance is a not-for-profit organization dedicated to expanding and accelerating the adoption of RDMA (Remote Direct memory Access) technologies for server and storage connectivity. Voltaire has played a major role in the OpenFabrics Alliance which led to the inclusion of InfiniBand software in several operating systems including Linux, Windows and others.
"Aside from providing significantly faster run-time, the combination of Oracle actual Application Clusters and Voltaire InfiniBand enables the deployment of database clusters that can elope larger data sets for both data warehousing and transactional applications," said Asaf Somekh, Vice President of Strategic Alliances, Voltaire. "This solution fits in nicely with the consolidation programs many data centers are now implementing."
"HP ProLiant servers deliver leading performance and scalability for enterprise data center customers, and Oracle solutions on InfiniBand deliver the performance gains and improved scalability customers want with their applications," said John Gromala, director of ProLiant product marketing, Industry benchmark Servers, HP.
Voltaire solutions for Oracle actual Application Clusters are available today by calling 1-800-865-8247.
Voltaire will showcase its solutions for Oracle actual Application Clusters in booth 2821 at Oracle OpenWorld in San Francisco, November 11-15, 2007. Voltaire is a member of the Oracle PartnerNetwork.
About the Oracle PartnerNetwork
Oracle PartnerNetwork is a global traffic network of more than 19,500 companies who deliver innovative software solutions based on Oracle software. Through access to Oracle's premier products, education, technical services, marketing and sales support, the Oracle PartnerNetwork program provides partners with the resources they exigency to live successful in today's global economy. Oracle partners are able to proffer their customers leading-edge solutions backed by Oracle's position as the world's largest enterprise software company. Partners who are able to demonstrate superior product knowledge, technical expertise and a commitment to doing traffic with Oracle qualify for the Certified colleague levels. oraclepartnernetwork.oracle.com
Voltaire (NASDAQ: VOLT) designs and develops server and storage switching and software solutions that enable high-performance grid computing within the data center. Voltaire refers to its server and storage switching and software solutions as the Voltaire Grid Backbone(TM). Voltaire's products leverage InfiniBand technology and include director-class switches, multi-service switches, fixed-port configuration switches, Ethernet and Fibre Channel routers and standards-based driver and management software. Voltaire's solutions absorb been sold to a wide sweep of immediate customers including governmental, research and educational organizations, as well as enterprises in the manufacturing, oil and gas, entertainment, life sciences and financial services industries.
Founded in 1997, Voltaire Ltd. is headquartered in Herzeliya, Israel, and has its U.S. headquarters in Billerica, Massachusetts. More information about Voltaire is available at www.voltaire.com or by calling 1-800-865-8247.Related Thomas Industry Update
Oracle on Wednesday introduced a two-node Oracle Database 11g and Oracle actual Application Clusters (RAC) appliance that offers a lower cost entry point to Oracle Exadata, but it doesn’t include many of software features that give Exadata performance boosts.
The 4U Intel-based machine, called the Oracle Database Appliance, includes two servers with built-in shared storage that allows immediate users to build a two-node Oracle RAC infrastructure. List price starts at $50,000 for the hardware only, significantly lower than the six-figure starting point of a quarter-rack Exadata. Oracle suggested it would work with databases up to 4 terabytes large. Specs include:
That said, the Oracle Database Appliance doesn’t include the Oracle Exadata Storage Server Software features such as hybrid columnar compression and smart scan that the company claims absorb given Exadata exponential query improvements.
“Oracle definitely needed something like this,” said Alex Gorbachev, chief technology officer (CTO) of Pythian, an Oracle consulting company that took section in the beta program for the original appliance. “A lot of customers couldn’t justify the cost of Exadata but could consume some of the features that an integrated appliance can provide.”
It took Pythian “a brace hours” to set up the appliance, absorb it running and accepting data on it. Gorbachev added that normally a original system setup requires expertise from various IT departments: systems, storage, networking and database, for example. Configuring this original appliance doesn’t require that.
The appliance also comes with some management software that simplifies its operations and automates patching for example.
“It noiseless requires some feeding and care when it comes to tuning, but other than that it’s removing a lot of overhead.”
That doesn’t denote it will liquidate the exigency for a DBA.
Kerry Osborne, chief information officer (CIO) at Enkitec, another Oracle consultancy that had an early gawk at the appliance, said immediate users won’t salvage the selfsame performance that they would salvage out of Oracle Exadata. And they shouldn’t expect it either: The original product is a smaller, less-expensive version of Exadata, and as such it’s not going to absorb as many features. Osborne said it’s also not something you can throw in the corner and expect to elope on its own.
“Anyone that thinks you can elope any kind of Oracle database without a knowledgeable human being is asking for trouble,” he said.
Shyam Varan Nath, one of the founders of the Oracle Exadata Special Interest Group within the Independent Oracle Users Group, said that Oracle originally had a eighth-rack Exadata but discontinued it. He considered Oracle’s response to those smaller IT shops that said the quarter-rack Exadata was noiseless too expensive.
“This could live a course to provide a similar box at lower price point without raising eyebrows on those already sold at higher price point as meant for large enterprises,” he said.
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F5-Networks [20 Certification Exam(s) ]
FCTC [2 Certification Exam(s) ]
Filemaker [9 Certification Exam(s) ]
Financial [36 Certification Exam(s) ]
Food [4 Certification Exam(s) ]
Fortinet [13 Certification Exam(s) ]
Foundry [6 Certification Exam(s) ]
FSMTB [1 Certification Exam(s) ]
Fujitsu [2 Certification Exam(s) ]
GAQM [9 Certification Exam(s) ]
Genesys [4 Certification Exam(s) ]
GIAC [15 Certification Exam(s) ]
Google [4 Certification Exam(s) ]
GuidanceSoftware [2 Certification Exam(s) ]
H3C [1 Certification Exam(s) ]
HDI [9 Certification Exam(s) ]
Healthcare [3 Certification Exam(s) ]
HIPAA [2 Certification Exam(s) ]
Hitachi [30 Certification Exam(s) ]
Hortonworks [4 Certification Exam(s) ]
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HR [4 Certification Exam(s) ]
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Hyperion [10 Certification Exam(s) ]
IAAP [1 Certification Exam(s) ]
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IBM [1532 Certification Exam(s) ]
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ICAI [1 Certification Exam(s) ]
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IEEE [1 Certification Exam(s) ]
IELTS [1 Certification Exam(s) ]
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IIA [3 Certification Exam(s) ]
IIBA [2 Certification Exam(s) ]
IISFA [1 Certification Exam(s) ]
Intel [2 Certification Exam(s) ]
IQN [1 Certification Exam(s) ]
IRS [1 Certification Exam(s) ]
ISA [1 Certification Exam(s) ]
ISACA [4 Certification Exam(s) ]
ISC2 [6 Certification Exam(s) ]
ISEB [24 Certification Exam(s) ]
Isilon [4 Certification Exam(s) ]
ISM [6 Certification Exam(s) ]
iSQI [7 Certification Exam(s) ]
ITEC [1 Certification Exam(s) ]
Juniper [64 Certification Exam(s) ]
LEED [1 Certification Exam(s) ]
Legato [5 Certification Exam(s) ]
Liferay [1 Certification Exam(s) ]
Logical-Operations [1 Certification Exam(s) ]
Lotus [66 Certification Exam(s) ]
LPI [24 Certification Exam(s) ]
LSI [3 Certification Exam(s) ]
Magento [3 Certification Exam(s) ]
Maintenance [2 Certification Exam(s) ]
McAfee [8 Certification Exam(s) ]
McData [3 Certification Exam(s) ]
Medical [69 Certification Exam(s) ]
Microsoft [374 Certification Exam(s) ]
Mile2 [3 Certification Exam(s) ]
Military [1 Certification Exam(s) ]
Misc [1 Certification Exam(s) ]
Motorola [7 Certification Exam(s) ]
mySQL [4 Certification Exam(s) ]
NBSTSA [1 Certification Exam(s) ]
NCEES [2 Certification Exam(s) ]
NCIDQ [1 Certification Exam(s) ]
NCLEX [2 Certification Exam(s) ]
Network-General [12 Certification Exam(s) ]
NetworkAppliance [39 Certification Exam(s) ]
NI [1 Certification Exam(s) ]
NIELIT [1 Certification Exam(s) ]
Nokia [6 Certification Exam(s) ]
Nortel [130 Certification Exam(s) ]
Novell [37 Certification Exam(s) ]
OMG [10 Certification Exam(s) ]
Oracle [279 Certification Exam(s) ]
P&C [2 Certification Exam(s) ]
Palo-Alto [4 Certification Exam(s) ]
PARCC [1 Certification Exam(s) ]
PayPal [1 Certification Exam(s) ]
Pegasystems [12 Certification Exam(s) ]
PEOPLECERT [4 Certification Exam(s) ]
PMI [15 Certification Exam(s) ]
Polycom [2 Certification Exam(s) ]
PostgreSQL-CE [1 Certification Exam(s) ]
Prince2 [6 Certification Exam(s) ]
PRMIA [1 Certification Exam(s) ]
PsychCorp [1 Certification Exam(s) ]
PTCB [2 Certification Exam(s) ]
QAI [1 Certification Exam(s) ]
QlikView [1 Certification Exam(s) ]
Quality-Assurance [7 Certification Exam(s) ]
RACC [1 Certification Exam(s) ]
Real-Estate [1 Certification Exam(s) ]
RedHat [8 Certification Exam(s) ]
RES [5 Certification Exam(s) ]
Riverbed [8 Certification Exam(s) ]
RSA [15 Certification Exam(s) ]
Sair [8 Certification Exam(s) ]
Salesforce [5 Certification Exam(s) ]
SANS [1 Certification Exam(s) ]
SAP [98 Certification Exam(s) ]
SASInstitute [15 Certification Exam(s) ]
SAT [1 Certification Exam(s) ]
SCO [10 Certification Exam(s) ]
SCP [6 Certification Exam(s) ]
SDI [3 Certification Exam(s) ]
See-Beyond [1 Certification Exam(s) ]
Siemens [1 Certification Exam(s) ]
Snia [7 Certification Exam(s) ]
SOA [15 Certification Exam(s) ]
Social-Work-Board [4 Certification Exam(s) ]
SpringSource [1 Certification Exam(s) ]
SUN [63 Certification Exam(s) ]
SUSE [1 Certification Exam(s) ]
Sybase [17 Certification Exam(s) ]
Symantec [134 Certification Exam(s) ]
Teacher-Certification [4 Certification Exam(s) ]
The-Open-Group [8 Certification Exam(s) ]
TIA [3 Certification Exam(s) ]
Tibco [18 Certification Exam(s) ]
Trainers [3 Certification Exam(s) ]
Trend [1 Certification Exam(s) ]
TruSecure [1 Certification Exam(s) ]
USMLE [1 Certification Exam(s) ]
VCE [6 Certification Exam(s) ]
Veeam [2 Certification Exam(s) ]
Veritas [33 Certification Exam(s) ]
Vmware [58 Certification Exam(s) ]
Wonderlic [2 Certification Exam(s) ]
Worldatwork [2 Certification Exam(s) ]
XML-Master [3 Certification Exam(s) ]
Zend [6 Certification Exam(s) ]
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