Test your DB2 resource hierarchy by initiating a manual switchover that will simulate a failover of the resource instance from the primary server to the backup server.

Performing a Manual Switchover from the LifeKeeper GUI

You can initiate a manual switchover from the LifeKeeper GUI by selecting Edit, Resource, and In Service. For example, an in-service request executed on a backup server causes the DB2 resource hierarchy to be placed in-service on the backup server and taken out-of-service on the primary server. At this point, the original backup server is now the primary server and original primary server has now become the backup server.

If you execute the Out of Service request, the resource hierarchy is taken out-of-service without bringing it in-service on the other server. The resource can only be brought in-service on the same server, if it was taken out-of-service during resynchronization.

If the raw bindings have not been established on the backup servers, it is most likely caused by the fact that new partitions were created on the primary server and added to the configuration, but the partition tables have not yet been updated on the backup servers.

The solution is to reboot the backup servers so that the partition tables are updated correctly.


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