The upgrade of Message Queue software to Java ES 5 Update 1 takes into account the following considerations:
In a deployment architecture in which there are multiple instances of Message Queue running on a single computer (all corresponding to the same installed Message Queue image), you only have to upgrade the Message Queue image once.
In a maintenance upgrade, you do not have to migrate configuration, security and user data.
The Release 5U1 Message Queue upgrade patches for Windows OS are shown in the following table: