Restoring the previous service level

 

We can backout service updates and restore your system to the previous service/install level, for any component of WebSphere MQ for AIX that is in the APPLIED state.

To back out a service update:

1. Before installing maintenance end all WebSphere MQ activity:

   1. Log in as root.

   2. Use the endmqm command to stop all running queue managers.

   3. Stop any listeners associated with the queue managers, using the command:

      endmqlsr -m QMgrName

   4. To check that you have stopped all of them, enter the following:

      ps -ef | grep mq

      Check that there are no processes listed that are running command lines beginnings amq or runmq. Ignore any that start with amqi.

2. Display the appropriate smit panel using this sequence:

     Software Installation and Maintenance
       Software Maintenance and Utilities
         Reject Applied Software Updates (Use Previous Version)

   Alternatively, use a fastpath command (smitty install_reject).

3. Complete the SOFTWARE name field. Enter MQM to restore all applicable fileset updates to your installation.

   Although there is an option to restore only selected fileset updates for WebSphere MQ for AIX, this still results in all applicable fileset updates for the service update being restored.

4. Use the displayed default values for all other fields to reject the current service level and reinstate the previous service or install level.

5. Press Enter to display a confirmation message, before starting the reject process. While the command runs, it displays progress messages terminating with an Installp Summary table, confirming which components of WebSphere MQ for AIX have been rejected.

 

Parent topic:

Applying maintenance

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