Dealing with the problem
Dealing with program abendsBatch abendsCICS transaction abendsIMS transaction abendsDealing with waits and loopsDistinguishing between waits and loopsWaitsLoopsSymptoms of waits and loopsDealing with waitsIs a batch or TSO program waiting?Is a CICS transaction waiting?Is DB2 waiting?Is RRS active?Is WebSphere MQ for z/OS waiting?Dealing with loopsIs a batch application looping?Is a batch job producing a large amount of output?Does a CICS region show a lot of CPU activity?Does an IMS region show a lot of CPU activity?Is the queue manager showing a lot of CPU activity?Is a queue, page set, or Coupling Facility structure filling up unexpectedly?Are a task, and WebSphere MQ for z/OS, showing a lot of CPU activity?Dealing with performance problemsz/OS system considerationsWebSphere MQ for z/OS considerationsLog buffer poolsBuffer pool sizeDistribution of data sets on available DASDDistribution of queues on page setsDistribution of queues on Coupling Facility structuresLimitation of concurrent threadsUsing the WebSphere MQ trace for administrationCICS constraints