Programs that are eligible to reside above 16 MB, and are
read-only, can reside in the CICS® extended read-only DSA (ERDSA).
Programs that are not eligible to reside above 16 MB, and are
read-only, can reside in the CICS read-only DSA (RDSA) below 16 MB.
The following conditions apply for programs to be eligible for
the ERDSA:
- Programs must be properly written to read-only standards.
- Programs must be written to 31-bit addressing standards.
- Programs must be link-edited with the RENT attribute and the RMODE(ANY)
residency attribute.
The following conditions apply for programs to be eligible for
the RDSA:
- Programs must be properly written to read-only standards.
- Programs must be link-edited with the RENT attribute and the RMODE(24)
residency attribute.
Note: When you run CICS with RENTPGM=PROTECT specified
as a system initialization parameter, the RDSAs are allocated from
key-0 read-only storage.
ERDSA requirements for the specific languages are described in
the following topics.
Last updated: Thursday, 27 June 2019