STGPROT

The STGPROT system initialization parameter specifies whether you want storage protection to operate in the CICS® region.

Defining STGPROT

You can define the STGPROT system initialization parameter in the following ways:
  • On the PARM parameter of the EXEC PGM=DFHSIP statement
  • In the SYSIN data set of the CICS start up job stream
  • Through the system console
  • In the DFHSIT macro

Values for STGPROT

Valid values for the STGPROT system initialization parameter are as follows:

STGPROT={NO|YES}
YES is the default value for STGPROT. The permitted values are YES (the default), or NO.
YES
If you specify YES, or allow this system initialization parameter to default, CICS operates with storage protection, and observes the storage keys and execution keys that you specify in various system and resource definitions.
NO
If you specify NO, CICS does not operate any storage protection.

See CICS dynamic storage areas (DSAs) for information about which DSAs are affected by the use of STGPROT system initialization parameter. When CICS operates with storage protection, the storage for these DSAs is allocated from user-key storage. When CICS operates without storage protection, the storage for these DSAs is allocated from CICS-key storage.