z/OS DFSMShsm Implementation and Customization Guide
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Specifying the amount of time to wait for an ABARS secondary address space to initialize

z/OS DFSMShsm Implementation and Customization Guide
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When you run the ABARS startup procedure, DFSMShsm internally issues an MVS™ START command to start the ABARS secondary address space. If the address space does not start within a specified time, the ABARS address space is canceled and MVS frees the address space resources. The default time in which the ABARS address space must start is 5 minutes (300 seconds).

You can alter the default startup wait time with the following PATCH command:
PATCH .ABRCB.+494 X'nnnnnnnn' VERIFY(.ABRCB.+494 X'0000012C')
Note: X'nnnnnnnn' is the hexadecimal representation for the number of seconds to wait for an ABARS secondary address space to start.

Do not reduce the wait time unless you are sure that the ABARS address space can start within that time frame. If the time frame is too short, unexpected results can occur.

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