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MF_UCC11

Enables emulation of UCC11, the JCL job restart functionality.
Note: This environment variable works independently of the JCL RESTART parameter.

Syntax:

MF_UCC11=Y|YR|M|N

Properties:

Y
When running a job with DISP=(NEW,CATLG), it will not result in job failure caused by the data set already being cataloged.
YR
When restarting a job with DISP=(NEW,CATLG), it will not result in job failure caused by the data set already being cataloged.
M

When restarting a job, a cataloged data set is presumed to have an initial disposition of MOD rather than NEW. As a result, any new data is appended to the existing data set.

N
JCL job restart functionality is disabled.
Default: N
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