1. Before shutting down VSAM RLS processing, follow your installation procedures for shutting down applications that use open VSAM data sets in RLS mode. For CICS®, use one of the following ways to quiesce the data sets:
   • Use CEMT to shut down all CICS subsystems
   • Issue EXEC CICS, SET DSNAME(name) QUIESCED

   Some CICS subsystems can be shut down by issuing CEMT P SHUT.

2. Issue the following command to shut down VSAM RLS processing on all systems: V SMS,SMSVSAM,TERMINATESERVER
3. Wait for all VSAM RLS address spaces (SMSVSAM) to end.
4. Deletion of the structure IGWLOCK00 might need to be forced. See Deleting structures with SETXCF FORCE for more information on forcing deletion of persistent structures with the SETXCF FORCE,STRUCTURE,STRNAME=IGWLOCK00 system command.

   Alternatively, use the VARY SMS,SMSVSAM,FORCEDELETELOCKSTRUCTURE system command.

Use of the structure can be re-initiated with the VARY SMS,SMSVSAM,ACTIVE system command.

VSAM RLS processing is again available. To make available for record-level sharing any data set with unresolved locks (lost-locks condition), perform all necessary forward and backward recovery for the data sets.