Overview of the Global Data Area

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The Global Data Area sets the values for the monitoring options for OMEGAMON for CICS (3270).

These values are generated during configuration and apply to all OMEGAMON AI for CICS sessions that are monitoring the same CICS® region. The Global Data Area enables you to set options for OMEGAMON AI for CICS features, such as:
  • The task history collector
  • The historical reporter
  • The interval record collector
  • The response time collector
To update these values, a CICS system programmer edits a source dataset and runs a verify job.

Furthermore, you can specify whether the CICS regions using this Global Data should deliver transaction data to the Service Level Analysis feature of the OMEGAMON AI for CICS agent.

The KC2_CLASSIC_KC2GLB_SRCLIB PARMGEN parameter specifies where the global members are kept. Global data areas set up performance monitoring collections, such as historical recording for a CICS region or writing of performance records to SMS. You can update these values dynamically using the enhanced 3270 user interface or OMEGAMON for CICS (3270); however, the updates will be lost when you recycle the CICS address space. If you want the changes to be permanent, you must edit the values in the data set specified by the KC2_CLASSIC_KC2GLB_SRCLIB parameter.

The global data areas, KC2GLBxx, are members of a typical partitioned data set. You can create your own version by updating the sample provided, then storing it in the same or a separate dataset and copying it to your selected runtime environments (RTE).

For new PARMGEN-created RTEs (ones not converted from an existing Configuration Tool environment), specify a common KC2_CLASSIC_KC2GLB_SRCLIB library to store the customized KC2GLB* globals that can be copied to the different RTEs' RKANPARU libraries referenced in the RKC2GLBL DD of the KC2_CCnn_CLASSIC_STC. If you are a first time user, you can create your own data set by running a JCL job provided in the RKANSAMU data set.

For existing RTEs (those created using the Configuration Tool and converted to PARMGEN), the WKANSAMU(KC2GLBCP) KC2GLB* copy job may be used to copy the customized globals from the KC2GLB source library specified in the KC2_CLASSIC_KC2GLB_SRCLIB parameter (INSTDATA by default), to the RKANPARU library referenced in the RKC2GLBL DD of the KC2_CCnn_CLASSIC_STC.

OMEGAMON AI for CICS is shipped with a pre-defined set of defaults for the Global Data Area in the member KC2GLB. This member becomes the default for the Global Data Area in the CICS region JCL.

When you configure OMEGAMON AI for CICS , you can update the monitoring options using the parameters in the Global Data Area.