You can use the RLSTMOUT parameter of the JCL EXEC statement to specify a timeout value for lock requests. A VSAM RLS or DFSMStvs request waits the specified number of seconds for a required lock before the request times out and is assumed to be in deadlock.

For information about the RLSTMOUT parameter, see the description of the EXEC statement in z/OS MVS JCL Reference.

For information about avoiding deadlocks and additional information about specifying a timeout value, see z/OS DFSMStvs Planning and Operating Guide and z/OS MVS Initialization and Tuning Guide.