When you fall back from VSAM RLS processing, the following occurs: the SMSVSAM address space shuts down permanently on every system in the Parallel Sysplex®; the SMSVSAM automatic restart capability is disabled; the lock structure IGWLOCK00 is de-allocated (but any secondary lock structures are not deleted), and all knowledge of SHCDSs and pending subsystem recovery is deleted.

The following sections describe some rules and considerations to follow when falling back from VSAM RLS processing. They also outline the fallback procedure to follow, providing you are only falling back from RLS processing and that you are staying at current product levels. If you are also falling back to different CICS®, CICSVR, or DFSMS release levels, see Understanding the product environment for VSAM RLS for a list of rules and considerations to follow.