Changes that affect migration
Changes to the product might affect the migration of a queue manager from an earlier release to the current release of IBM MQ , or affect existing applications or configurations. Review these changes before upgrading queue managers to the latest product version and decide whether you must plan to make changes to existing applications, scripts, and procedures before starting to migrate your systems.Changes in the current version
For details of changes in the current version of , including those that affect migration, see the following information:- What's new and changed in IBM MQ Version 9.0
What's new and
changed in Version 9.0.x
Continuous Delivery
What's changed in Version 9.0.0.x
Long Term Support
- Readme for IBM MQ V9.0 and its maintenance
Changes in earlier versions
For information about what changed in an earlier release of the product, see the What's changed section in the product documentation for that version of the product:- What's changed in IBM MQ Version 8.0
- What's changed in IBM WebSphere MQ Version 7.5
- What's changed in IBM WebSphere MQ Version 7.1
For older, out of support, versions of the product, the documentation is not available in the online IBM Knowledge Center, but is available for you to download for offline use. For more information, see Documentation for older versions of IBM MQ.
Restrictions on reversing queue manager migration
Attention:On IBM MQ for Multiplatforms, we cannot reverse queue manager migration to remove the effect of changes. This restriction applies whether your enterprise uses the Long Term Support (LTS) release or Continuous Delivery (CD) release model.
On IBM MQ for z/OS®, you
can reverse queue manager migration as long as we have not enabled new function, and are using the
LTS release model. You enable new function,
for a queue manager on the LTS release model,
by setting the OPMODE parameter to (NEWFUNC, 900).
For further information, see IBM MQ release types.