Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF

3. Delete an instance from the RAC database.
For more information about deleting an instance, see the documentation available at the
Oracle documentation site.
4. Delete the RAC database software and Oracle Clusterware.
For more information about deleting the RAC database and Oracle Clusterware, see the
documentation available at the Oracle documentation site.
5. Remove the node from the node list of the Site Controller Package.
6. Run the cmhaltnode command to halt the cluster on this node.
7. Remove the node from the cluster configuration.
For more information about removing a node from the cluster configuration, see the Managing
Serviceguard manual available at http://www.hp.com/go/hpux-serviceguard-docs.
Deleting nodes online on the site where the RAC database package stack is down
To delete nodes online on the site where the RAC database package stack is down:
1. Remove the RAC MNP package instance configuration on the node that must be deleted.
2. Remove access to RAC database storage from this node by removing the storage configuration.
For more information about removing access to the RAC database storage device, see the
CFS, CVM, and SLVM documentation.
3. Clear the registration of the RAC database instance with the CRS subcluster on the site using
the following command:
# srvctl remove instance -i hrdb3 –d hrdb
4. Remove the tnsnames.ora entry for the instance being deleted on all the nodes in the site.
5. Remove Oracle RAC and Oracle Clusterware software on the node.
For more information about removing Oracle RAC and Oracle Clusterware, see the Oracle
Database 10gR2 RAC documentation available at the Oracle documentation site.
6. Remove the node from the node list of the Site Controller Package.
7. Halt the cluster on this node using the cmhaltnode command.
8. Remove the node from the cluster configuration.
For more information about removing nodes from the cluster configuration, see the Managing
Serviceguard manual.
9. Start the Site Controller Package.
Starting a disaster tolerant Oracle database 10gR2 RAC
You can start the disaster tolerant RAC database in a Metrocluster by starting the Site Controller
Package of the corresponding database.
To start the disaster tolerant database:
1. Ensure that the CRS MNP package on the site is up and running.
# cmviewcl –p <site A crs package name>
2. If you have CVM/CFS configured, ensure that the Serviceguard CFS SMNP package is also
up and running in the Metrocluster.
# cmviewcl –p SG-CFS-pkg
3. Ensure that the Site Controller Package is enabled on all the nodes in the site where the
database must be started.
# cmmodpkg –e –n <site A node 1> -n <site B node 2>\
<site_controller_package_name>
4. Start the Site Controller Package by enabling it.
# cmmodpkg –e <Site Controller Package name>
Administering Metrocluster for RAC 129