Changes that affect migration
On distributed platforms, you cannot reverse queue manager migration to remove the effect of changes.
On z/OS®, you
can reverse queue manager migration as long as you have not enabled new
function. You enable new function by setting the OPMODE
parameter to (NEWFUNC, 800)
.
Changes for IBM MQ Version 8.0
- Command changes: dmpmqcfg output
- Command changes: results displayed in response to DISPLAY CONN command from runmqsc
- Command level: changes
- Deprecation: linking with libmqmcs and libmqmzse libraries
- Java and JMS: Changes to CipherSuite support
- Java: changes for Java 7
- Java: Changes to IBM MQ classes for Java
- Java: Changes to MQException and MQDataException class logging
- Extended start events for multi-instance queue managers
- JMS: changes to JAR files for JMS 2.0
- JMS: changes to IBM MQ classes for JMS
- Publish/subscribe: changes to DISPLAY TOPIC and DISPLAY TPSTATUS output
- Publish/subscribe: changes to how the subscription selection string is evaluated
- Queue managers: change to default TCP buffer size
- Queue managers: Version attribute added for queue managers in a cluster
- Security: new CONNAUTH CHCKLOCL parameter
- Security: Disable AMS at the client
- Security: reduction in channel send exit buffer space for SSL and TLS
- Solaris client: Change in method of installation
- z/OS: changes to log RBA and URID lengths
- z/OS: WLM/DNS no longer supported
For details of all changes in this release, including those that affect migration, see What's changed in IBM MQ 8.0 .
Changes in earlier releases
For older, out of support, versions of the product, the documentation is not available in the online IBM Documentation, but is available for you to download for offline use. For more information, see Documentation for older versions of IBM MQ.