CICS storage protect facility

The CICS® Storage Protect Facility allows you to isolate user applications from CICS storage. For information about the CICS Storage Protect Facility, go to the IBM Knowledge Center at http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp.

All storage that Language Environment acquires on behalf of the user, such as working storage, heap, and stack, it acquires in the default key specified on the transaction. All storage that Language Environment acquires for its own use, such as control blocks, it acquires using USERDATAKEY storage. Applications running with Language Environment can obtain CICSDATAKEY storage by using the EXEC CICS interface.