Exception Class data

CMF passes an exception record directly to SMF when any of the following exception conditions encountered by a transaction is resolved:

An exception record is created each time any of the resources covered by CMF exception class monitoring becomes constrained by system bottlenecks. If performance data is also being recorded, it keeps a count of the number of exception records generated for each task and also the total time that the task was delayed due to encountering a resource shortage. The exception records can be linked to the performance data by the transaction identifier in the TASKNO and NETUOW fields in each type of record.

This data is intended to help you identify constraints that affect the performance of your transaction. The information is written to the SMF data set as soon as the task that was originally constrained has been released.

You can enable exception class monitoring in either of the following ways: