Solution

Perform the following steps to migrate the MQ store:

Perform the following steps AFTER AS 8.2 has been shut down and AFTER the AS9.1 upgrade tool is run but BEFORE AS9.1 is started for the FIRST time. If you have already started AS 9.1 after the IFR install/upgrade, then DO NOT perform these steps as they will potentially destabilize the MQ message store.

1. Copy the entire domain-dir/imq subdirectory from the AS 8.x domains directory to the AS 9.1 domains directory.

2. Ensure that the ownership of the directory and files is the same as the user that is going to be running the Application Server.

After performing the above steps, Application Server 9.1 can be started and the MQ store in the Application Server 9.1. domains directory will be migrated from its JES5 U1 format to MQ 4.1 format. Note that the original JES5 U1 MQ store under AS 8.2 is preserved and unmodified by this procedure or by MQ4.1 upon startup by AS 9.1