The GLVSHAREDRESERVE parameter relates to the OPSHFI command processor and shared file support. The OPSHFI command processor provides you with the capability to store global variable records on an external VSAM key-sequenced data set that can be shared among systems. Using various OPSHFI keywords, you can WRITE variable records to the VSAM file, or READ or DELETE variable records from the VSAM file.
The GLVSHAREDRESERVE parameter determines the number of seconds that CA OPS/MVS should wait to acquire control of the shared VSAM file using a z/OS RESERVE request.
If you specify 0, no RESERVE is performed. In this case, the file must not be accessed simultaneously by another system. If the RESERVE request times out due to contention with other systems, the file request that is being processed fails.
If the system uses a product such as CA MII to convert RESERVE requests to global enqueue requests, define the ddname used for shared file allocation to the product as the RESERVE major name. Consult your local systems programming group for the required system changes.
The z/OS RESERVE enqueue name for the shared VSAM file is:
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Name |
Description |
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Major name |
The value of the GLVSHAREDDD parameter |
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Minor name |
SVDB |
For more information about the VSAM file used to store global variables, see the description of the OPSHFI command processor in the Command and Function Reference.
120
Any number of seconds from 0 to 600
Anytime
Example: GLVSHAREDRESERVE
This function specifies that CA OPS/MVS should wait 60 seconds to acquire control of the shared VSAM file.
OPSPRM('SET','GLVSHAREDRESERVE','60')
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