Enabling and disabling automatic dump data set allocation

Use the DUMPDS ALLOC command to activate or inactivate the automatic allocation of dump data sets.

 
DD ALLOC={ACTIVE|INACTIVE}
 

ALLOC=ACTIVE

Dump data sets are automatically allocated when a dump is requested. Any of the resources that have been defined by the DUMPDS ADD command as available for automatically allocated dump data sets are used. If no automatic allocation resources are defined, the system issues message IEA799I and writes the dump to a pre-allocated dump data set on its list of SYS1.DUMP data sets. If no pre-allocated dump data sets are on the system's list of SYS1.DUMP data sets, then message IEA793A is issued requesting operator intervention. The requested dump is kept in virtual storage until an automatic allocation resource is defined, a pre-allocated dump data set is made available either by allocating a new one or clearing an existing one, or the dump is deleted either by operator request or expiration of the CHNGDUMP MSGTIME parameter.

ALLOC=INACTIVE

This is the initial state of the system after IPL. Dump data sets are not automatically allocated when a dump is requested. Resources defined by the DUMPDS ADD command as available for automatic allocation of dump sets are not used. Any requested dump will be written to a pre-allocated dump data set specified on the system's list of SYS1.DUMP data sets. If no pre-allocated dump data sets are specified on the system's list of SYS1.DUMP data sets, then message IEA793A is issued requesting operator intervention. The requested dump is kept in virtual storage until automatic allocation is enabled, a pre-allocated dump data set is made available either by allocating a new one or clearing an existing one, or the dump is deleted either by operator request or expiration of the CHNGDUMP MSGTIME parameter.

Example:

DD ALLOC=INACTIVE

This is the system default.