Dynamically add log data sets to an active queue manager

Log data in WebSphere MQ is written to a ring of active logs. If all the logs in the ring become filled up, the queue manager is unable to perform logging, work stops and an application failure occurs. To avoid this scenario, it is now possible to add additional log data sets to the active queue manager. This allows more time for fixing the underlying log offload problem. It also allows additional time for message processing to reach the end of a critical period, if necessary.

In this context, a new MQSC command DEFINE LOG allows you to specify the name of a new VSAM data set, and the number of an active log ring. For additional information, see Logging. See the WebSphere MQ Script (MQSC) Command Reference for details of this command.