z/OS MVS JCL Reference
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RLSTMOUT parameter

z/OS MVS JCL Reference

Parameter type

Keyword, optional


Use the RLSTMOUT parameter to specify the maximum time in seconds that a VSAM RLS or DFSMStvs request is to wait for a required lock before the request is assumed to be in deadlock and ended with VSAM return code 8 and reason code 22(X'16'). Specify RLSTMOUT as a value in seconds in the range of 0 to 9999. A value of 0 means that the VSAM RLS or DFSMStvs request has no timeout value; the request waits as long as necessary to obtain the required lock.

VSAM RLS detects deadlocks within VSAM and DFSMStvs. It cannot detect deadlocks across other resource managers, and uses the timeout value to determine when such deadlocks might have occurred.

In addition to specifying RLSTMOUT on the JCL step level, you can also specify a global timeout value in the IGDSMSxx member of SYS1.PARMLIB, or on the RPL passed for each VSAM request. For a particular VSAM RLS or DFSMStvs request, the value used for time out is in the following order:
  1. The value specified in the RPL, if any
  2. The value specified in JCL at the step level, if any
  3. The value specified in the IGDSMSxx member of SYS1.PARMLIB, if any
CICS specifies the timeout value in the VSAM RPL. The value used is specified in the CICS® System Initialization Table or the transaction definition.

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