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ABCs of z/OS System Programming Volume 8 by Peter Hilger, Paul Rogers

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Dump processing
Dumps can provide useful diagnosis data. But you need to check the dump-related options to be sure all information needed will be dumped.
Generally, the system automatically captures a dump when it detects a serious error with an operating system component (for example, JES, VTAM, etc.), a subsystem (for example, CICS, DB2, MQ, etc.), or application program. For most system or subsystem failures an SVC (Supervisor Call) dump is generated and written out to a predefined, or dynamically defined, dump data set. You do, however, have ...

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