Enabling VSAM RLS processing

VSAM RLS processing is available once the following requirements are met:

All systems are running as a Parallel Sysplex®.
At least two SHCDSs, and one spare SHCDS have been activated.
At least one existing CF cache structure is defined to MVS and to the SMS base configuration.
If a subset of the cache structures is not available, some data sets might not be accessible.
The CF lock structure IGWLOCK00 is available.
The SMS address space is started.

If a null configuration is active, only existing data sets already assigned to a CF cache structure can be processed.

If VSAM RLS processing is not enabled, all attempts to open a data set where VSAM RLS is specified on the ACB or the JCL fail.

SYSVSAM must not be in the RNLDEF exclude list for any data sets accessed by RLS.

Under the following conditions, VSAM RLS access from a system is not available:

No SHCDSs are available.
The CF lock structure, IGWLOCK00, is not available.
The SMSVSAM address space has failed and a response to message IGW418D is pending.
The SMSVSAM address space has failed, and manual restart is in effect (the response to message IGW418D was C).
None of the CF cache structures defined in the SMS configuration are available. If a subset of CF cache structures are not available, data sets bound to those structures might not be accessible from this system.