At 18:34 -0400 on 05/25/2007, (IBM Mainframe Discussion List) wrote
about Re: Why is there JOB scope for DSN ENQ's anyway?:
In a message dated 5/25/2007 5:09:08 P.M. Central Daylight Time,
[EMAIL PROTECTED] writes:
That "There is no easy way that I know to determine if the current
step is the last step that uses the dataset" claim conflicts with
your "then releases the dataset at the end of the last step that uses
it" statement.
It confused me at first, too. I believe what he means is that the Initiator
can know where the last step is that has JCL referring to the data set, but
cannot know that a later step will dynamically allocate the data set without
JCL referring to it.
At the current time that is an exposure RIGHT NOW since the Initiator
has released the ENQ and you have to hope you can get it again. How
will doing a EXC->SHR downgrade alter this situation?
Bill Fairchild
Plainfield, IL
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