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Enqueue Installation Exit Routine (ADRUENQ) z/OS DFSMS Installation Exits SC23-6850-01 |
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The enqueue installation exits routine that is supplied with DFSMSdss
passes a return code of zero. This causes DFSMSdss to do the following:
You can use this exit to cause DFSMSdss to enqueue the VTOC only for the duration of the VTOC access. If you do not enqueue the VTOC for the entire operation, you can improve performance and decrease the chance of deadlock. However, there is a trade-off. With the improved performance and reduced chance of deadlock, there is also decreased data integrity. |
Copyright IBM Corporation 1990, 2014
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