Recovery

Performing a recovery

5.2.4Recovery with ORACLE Parallel Server (OPS)

If OPS is being used, you must pay attention to some further prerequisites:

All OPS instances have to have been specified in the configuration of NSR- ORA. Instances that were added at a later date have to be contained in the file /nsr/oracle/${ORACLE_SID}/config/dbo${ORACLE_SID}.init and also have to have been added to the variable OPS_INSTANCES.

On all OPS instances, the .rhost file has to contain entries for all other instances for the ORACLE user.

All OPS instances have to have had recover access assigned to them in the NetWorker client resource for all other OPS instances.

The redolog files of the individual instances have to be accessible under a single directory name. This may be a symbolic reference, which is created on all of the instances.

All OPS instances have to be accessible during the recovery.

In an OPS system, each OPS node has a separate directory for its archived redolog files; these directories are not sharable.

You have the following options for the recovery:

If the database was backed up online, use the automatic recovery (by calling nsrora_rec). The recovery of the tablespaces then runs as described in the section “Fully-automatic Recovery”.

!because it is not possible to automate access to the distributed archived redolog files. In the case of an offline recovery on an OPS system, the ORACLE administrator must therefore ensure that all the redolog files can be accessed from the OPS node from which the database recovery was started.There are various ways of doing this, for instance the ORACLE administrator can

read the redolog files that were backed up by NetWorker back into the archive directories of the individual instances and mount these directories via NFS,

read or copy all the necessary redolog files (both those that have been backed up by NetWorker and those that are still located in

the archive directories of the various instances) into a directory which is located on the instance from which the recovery will beThe redolog files have to be restored manually when using nsrora_rec,

System Administrator’s Guide

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3Com NSR-ORA V3.2 manual Recovery with Oracle Parallel Server OPS

NSR-ORA V3.2 specifications

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