Physical configuration requirements and limitations for Oracle Cluster

1. Oracle Clusterware supports up to nodes in a cluster on configurations running Oracle Database 10grelease 2 (10.2) A nd later releases.

After the 10.2 version began Oracle's cluster supports clusters of up to 100g nodes.

2. Network configuration:

At least 2 net cards per node (one for a public network and one for a private network)

Oracle does not support direct connections between cluster nodes.

Oracle clusterware 11g Release 2 (11.2) supports the "Use of" Dynamic Host Configuration Protocol (DHCP) for the VIP address Es and the SCAN address, but is not the public address.

VIP is supported after 11.2, scan IP uses DHCP but public IP does not support

3, storage configuration:

Oracle Clusterware supports NFS, iscsi,direct attached Storage (DAS), Storage area Network (SAN) Storage, and network Attac Hed Storage (NAS).

OCR recommended Redundancy "=5

Voting disk suggest 5; support up to 15

Voting disk supports up to 15 disks

The voting disk files, which record node membership information,

And the Oracle Cluster Registry (OCR), which records Cluster configuration information,information about the components th At Oracle Clusterware controls, such as Oracle RAC databases, listeners, virtual IP addresses (VIPs), and services and Applications.

Voting disk records the node member relationship information.

OCR mainly records the configuration information of the black silk cluster, such as cluster control components: Database, monitor, VIP, service, other applications.

4. Cluster, ASM, RDBMS. Compatibility issues

Oracle ASM Release 11.2 requires Oracleclusterware release 11.2 and Supports

Oracle Database 11grelease 2 (11.2), Release 1 (11.1), Oracle Database 10g Release 2 (10.2), and Release 1 (10.1)

11.2 of the ASM requirements of the cluster are >=11.2 but can be supported by the database can be 11.2,11.1,10.2,10.1

5 、----Oracle Cluster Two configuration, management tools

Server Control (SRVCTL): SRVCTL is a command-line interface-you can-manage Oracle resources, such as databases , services, or listeners in the cluster.

SRVCLT can be used to manage Oracle resources such as databases, services, monitoring.

Oracle Clusterware Control (CRSCTL): Crsctl is a command-line tool-can use to manage Oracle clusterware. Crsctl should is used for general clusterware management and management of individual.

CRSCTL manages cluster-level tools to manage the entire cluster or manage individual cluster resources.

The commands issued by these two tools are valid for all nodes in the entire cluster and can be used to issue commands to any node in the cluster to control, configure the resources of the cluster or RAC

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