z/OS MVS Initialization and Tuning Guide
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Identifying problems in virtual storage (DIAGxx parmlib member)

z/OS MVS Initialization and Tuning Guide
SA23-1379-02

This section describes functions you can use to identify problems with virtual storage requests (such as excessive use of common storage, or storage that is not freed at the end of a job or address space). The functions are as follows; you can control their status in the DIAGxx parmlib member.:
  • Common storage tracking
  • GETMAIN/FREEMAIN/STORAGE (GFS) trace.

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