Monitoring CICS, and IMS

Certain facilities enable you to monitor the performance of Db2 in conjunction with CICS® and IMS.

Db2 and CICS

To monitor Db2 and CICS, you can use the following facilities.

  • RMF Monitor I and II for physical resource utilizations
  • GTF for detailed I/O monitoring when needed
  • Tivoli® Decision Support for z/OS® for application processor utilization, transaction performance, and system statistics.

You can use RMF Monitor II to dynamically monitor system-wide physical resource utilizations, which can show queuing delays in the I/O subsystem.

In addition, the CICS attachment facility DSNC DISPLAY command allows any authorized CICS user to dynamically display statistical information related to thread usage and situations when all threads are busy.

Be sure that the number of threads reserved for specific transactions or for the pool is large enough to handle the actual load. You can dynamically modify the value specified in the CICS resource definition online (RDO) attribute ACCOUNTREC with the DSNC MODIFY TRANSACTION command. You might also need to modify the maximum number of threads specified for the MAX USERS field on installation panel DSNTIPE.

Db2 and IMS

To monitor Db2 and IMS, you can use the following facilities.
  • RMF Monitor I and II for physical resource utilizations
  • GTF for detailed I/O monitoring when needed
  • IBM® OMEGAMON® for Db2 Performance Expert on z/OS IMS Performance Analyzer, or its equivalent, for response-time analysis and tracking all IMS-generated requests to Db2
  • IMS Fast Path Log Analysis Utility (DBFULTA0) for performance reports for IMS Fast Path transactions.

The Db2 IMS attachment facility also allows you to use the Db2 command DISPLAY THREAD command to dynamically observe Db2 performance.