The GLVSHAREDRLS parameter allows CA OPS/MVS to use VSAM RLS for the shared VSAM file feature instead of using hardware reserve to serialize access to the file. z/OS, with DFSMS/MVS 1.3 and coupling facility hardware, supports VSAM record level sharing (RLS) through the coupling facility. For information about the availability and use of this feature at your site, see your systems programming group. Also, for information about VSAM RLS recovery considerations and the cleanup of residual record locks for failures, see the appropriate IBM manuals regarding DFSMS/MVS 1.3 data sharing using RLS.
To use VSAM RLS, the shared VSAM file must be managed by SMS and defined with the IDCAMS parameter LOG(NONE). All systems that share the file must also use RLS. Using both RLS and hardware reserve causes open failures.
To use VSAM RLS, all the following must be true:
NO
This value prevents CA OPS/MVS from using VSAM RLS for file serialization.
YES
This value causes CA OPS/MVS to use VSAM RLS for file serialization.
Anytime
Example: GLVSHAREDRLS
This function specifies that the VSAM shared file I/O feature is to use VSAM RLS for serialization.
OPSPRM('SET','GLVSHAREDRLS','YES')
|
Copyright © 2014 CA.
All rights reserved.
|
|