Monitoring the data-sharing system

To monitor data sharing, you obtain information on the status of the IRLM, IMS subsystems and databases, the RECON data sets, and, for data sharing in an IMSplex, coupling facility structures that are participating in data sharing.

To:

• Display the status of an IRLM on either your system or on another connected system, enter the following z/OS® command:

  MODIFY irlmproc,STATUS,irlmx

  Related reading: For a complete description of the commands for the IRLM, see IMS Version 15 Commands, Volume 3: IMS Component and z/OS Commands.

• Monitor components and resources in a data-sharing environment, use the same types of procedures as in a non-data-sharing environment. For more information about monitoring, see Collecting and interpreting IMS monitoring data.
• Monitor structures on a coupling facility, use following z/OS operator commands:
  • DISPLAY XCF,STRUCTURE: Used to display the status of structures defined in your active policy.
  • DISPLAY XCF,STRUCTURE,STRNAME=: Used to display detailed information about a specific structure. The structures that are important to IMS are the IRLM, OSAM, VSAM, shared MSGQ, and shared EMHQ structures.

  These commands let you look at structures on a coupling facility to determine resource status and, for failures, gather information for problem determination.

  Related reading: For detailed information about these commands, see z/OS MVS System Commands.