Overview

Use the procedures in the Oracle documentation to install and configure OPS. Although OPS is not registered with or managed by the Sun Cluster Resource Group Manager (RGM), OPS depends on the RGM to query cluster information.

You can configure OPS to use the shared-disk architecture of the Sun Cluster software. In this configuration, a single database is shared among multiple instances of OPS that access the database concurrently. The Oracle UNIX Distributed Lock Manager (UDLM) controls conflicting access to the same data. If a process or a node crashes, the UDLM is reconfigured to recover from the failure.

If a node failure occurs in an OPS environment, you can configure Oracle clients to reconnect to the surviving server without the use of the IP failover that Sun Cluster failover data services use. The Sun Cluster 3.0 U1 Concepts document describes this failover process.In an OPS environment, multiple Oracle instances cooperate to provide access to the same shared database. The Oracle clients can use any of the instances to access the database. Thus, if one or more instances have failed, clients can connect to a surviving instance and continue to access the database.