Oracle Cluster physical configuration requirements and limitations

Oracle Cluster physical configuration requirements and limitations

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 release, Oracle's cluster supports clusters of up to 100g nodes.

2. Network configuration:
Minimum 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 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 attached storage(NAS).

OCR recommended Redundancy "=5
Voting disk suggest 5;

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 any Applications.

Voting disk records the node member relationship information.

OCR mainly records the configuration information of the black wire cluster, such as cluster-controlled components: database, monitoring, VIP, service, and 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 the supported 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 the can use to manage Oracle resources, such as databases , services, or listeners in the cluster.

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

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

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

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