3.2. Some common VSAM problems

Here we describe some problems which may affect the processing and the existence of your VSAM data sets. To simplify our search for a solution to each problem, we can use the three “Whats”, for example, occurrence, recovery, and avoidance.

In each subsection we cover the three “Whats”:

  • What happened to cause this problem?

  • What must you do in order to recover your data now?

  • What must you do to avoid this problem in the future?

Broken data sets can be caused by many different circumstances, including user errors. When diagnosing these types of problems, the first thing that must be done is to identify what is actually wrong with the data set. The first sign of a problem is the VSAM or the z/OS system messages. A single ...

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