RAC is an option for an Oracle database that enables multiple nodes to have shared access to a single database. The
Avamar Plug-in for Oracle supports backups of RAC configuration on HP-UX, IBM AIX, Linux, Solaris, or Windows platforms, and requires that Oracle RAC installation is in the English language.
The
Avamar Plug-in for Oracle installation packages for the HP-UX, IBM AIX, Linux, and Solaris platforms include three configuration scripts for Oracle RAC:
rac_config—Configures the
Avamar Plug-in for Oracle to back up and restore RAC databases.
rac_deconfig—Deletes the RAC configuration from the
Avamar Plug-in for Oracle.
rac_stop—Removes the Avamar agent (EMCagent) from the Oracle Clusterware resource list.
The
Avamar Plug-in for Oracle installation package for Microsoft Windows includes
AvamarRACConfiguration.exe.
Use
Avamar Administrator to back up and restore Oracle RAC databases just as you would for non-RAC databases. In an Oracle RAC configuration, each cluster node runs a local instance of the Oracle database and maintains a local copy of online logs. The instance name differs from the database unique name.
To back up an Oracle RAC database, the
Avamar Plug-in for Oracle connects to the instance of the database that is running on the current active node. To restore an Oracle RAC database, you must first shut down all database instances, and then start the instance on the registered node in a “no mount” state.
When one cluster node fails or is taken offline, the other cluster nodes continue operating. The Oracle RAC database remains available to users without interruption. The
Avamar Plug-in for Oracle backs up and restores Oracle RAC databases by connecting to the instance that runs on the cluster node. This node is the one registered with the Avamar server.
Because each node runs an instance of the Oracle database in a RAC configuration, when a failover occurs, users access the database on the failover node. The failover process is transparent to the users.
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