Are your audit jobs running longer than expected? Perhaps this is a new application or you have added a new baseline library containing load modules or program objects to an application? If so, have you run the CMNFIXMN utility against the appropriate libraries? Failure to do so may result in functions that use SETSSI data, such as audit, continually regenerating the same information on every execution.
Full details on the CMNFIXMN can be found in the ZMF Customization Guide. The 8.2 Patch 6 version of this manual is currently located here.