Disaster recovery rehearsal in Continentalclusters

Rehearsing recovery in Continentalclusters

This section describes how to perform a Continentalclusters recovery rehearsal for a Single Instance

application, Oracle 10g RAC, and Oracle 9i RAC applications.

Following are the steps that you need to follow to start and stop rehearsal for a recovery group:

1. Verify data replication environment.

2. Move the recovery group into maintenance mode.

3. Prepare the replication environment for DR rehearsal.

4. Start rehearsal for the recovery group.

5. Stop the rehearsal package.

6. Restore replication environment for recovery.

7. Move recovery group out of maintenance mode.

Rehearsing recovery of a Single Instance application

This use case describes the procedure to rehearse recovery of a recovery group configured for

Single Instance application in Continentalclusters using Continuous Access P9000 or XP data

replication. Unless explicitly mentioned, the steps shown below can be executed from any node in

the recovery cluster. It is assumed that the primary package billing_primpkg is up on Atlanta and

replication is in progress.

1. Verify data replication environment at the recovery cluster.

Using the cmdrprev command, the preparation of data replication environment for an actual

recovery can be previewed. The command execution identifies errors in data replication

environment which could potentially fail an actual recovery.

Execute the following command on every node of the recovery cluster and verify that the command

returns a value 0.

#/usr/sbin/cmdrprev -p “billing_recpkg”

2. Move the recovery group billing_recgp into maintenance mode.

#cmrecovercl -d -g billing_recgp

3. Using the cmviewconcl command, verify that the recovery group billing_recgp is in maintenance

mode as shown below:

$) cmviewconcl -v

CONTINENTAL CLUSTER cc-cluster

RECOVERY CLUSTER HOUSTON

PRIMARY CLUSTER STATUS EVENT LEVEL POLLING INTERVAL

Atlanta up normal 1 min

CONFIGURED EVENT STATUS DURATION LAST NOTIFICATION SENT

alert down 1 min --

alarm down 2 min --