While under CA Datacom/DB 11.0 SP02, we used a Datacom Multi-user startup option DIAGOPTION 9,32,ON. I am preparing for the upgrades to a supported release and see that DIAGOPTION 9,32,ON is not documented in the current CA Datacom/DB Database and System Administration guide. What is the startup equivalent?
Startup option DIAGOPTION 9,32,ON should be replaced by FORCE_NO_64BIT YES.
FORCE_NO_64BIT is documented in the CA Datacom/DB Database and System Administration guide:
In addition to requiring 64-bit hardware and the correct z/OS release, support for 64-bit is not available if the Multi-User Facility initiator has had a subspace used in the past. CA Datacom attempts to detect this condition and, when found, not to utilize 64-bit memory in order to prevent a system abend DC2 with a reason x'0012'. However, because detecting that a subspace has been used in the past is not always possible, we recommend that the Multi-User Facility be a started TASK or run with a class-initiator that does not allow CICS execution.
For more information on support for z/OS 64-bit in z/OS environments, see z/OS 64-Bit Support (see page 214) for the COVERED MUF startup option and z/OS 64-Bit Support (see page 306) for the VIRTUAL MUF startup option.
Specify YES to force data space usage instead of 64-bit usage in z/OS environments where support for z/OS 64-bit is available.