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Changing the default maximum number of active parallel subtasks z/OS DFSMSdss Storage Administration SC23-6868-01 |
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During processing in PARALLEL mode, DFSMSdss limits the number of active subtasks to avoid exhausting virtual storage in the DFSMSdss address space. When the number of active parallel subtasks reaches the DFSMSdss determined value, DFSMSdss waits for any executing subtasks to complete before scheduling a new subtask. This function is affected by setting the one byte field at offset X'4C' in
ADRPATCH. The settings are listed below:
To override the default dynamically, you can use the SET PATCH
command to set the patch byte at offset X'4C' to any value
from X'01' through X'FF'. To override the default
permanently (for example, to allow a maximum of X'32' active
parallel subtasks), modify the sample JCL (see Sample JCL)
as follows:
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