Changes to storage

This section summarizes the changes to CICS® storage, across supported CICS releases. Use this information to understand significant changes between one release and another.

Table 1. Changes to CICS storage by release of CICS Transaction Server for z/OS®
Storage area	5.5	5.6	6.1	6.2	beta
ETDSA			REMOVED: any storage that was allocated from this DSA is now allocated from the ECDSA
PCDSA, PUDSA, EPCDSA, and EPUDSA			NEW: to enable the allocation of storage that is not protected from instruction execution. These DSAs have new subpools and some subpools that have moved from the CSDA, SDSA and their equivalent extended DSAs. See CICS dynamic storage areas (DSAs).
Subpools LDPGM, LDEPGM, LDRES, LDERES, LDNRS, LDENRS, LDNUC, and LDENUC			CHANGED: these subpools are now allocated in PCSDA, PUDSA, and their equivalent extended DSAs.
CDSA, SDSA, ECDSA, ESDSA locations			CHANGED: Loader Domain functions ACQUIRE_PROGRAM, RELEASE_PROGRAM, INQUIRE_PROGRAM, GET_NEXT_PROGRAM, GET_NEXT_INSTANCE, and IDENTIFY_PROGRAM return the location of the program to the caller. These locations changed; the CDSA becomes the PCDSA, the ECDSA becomes the EPCDSA, the SDSA becomes the PUDSA and the ESDSA becomes the EPUDSA. Although the names of the DSA equates have changed, the equate values have not changed.