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Carrie Da Silva
New User
Joined: 16 Nov 2017 Posts: 2 Location: USA
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Hello! I did a search for this question, but did not see an answer. So, I apologize in advance if it has been answered already and I did not find it. We have an exit into dynamic allocation. When I do an edit of a PS file in ispf 3.4, I see the allocation as disp=shr first then a follow on allocation of disp=old for the same data set. Is this normal? How does this affect enq processing?
Thanks in advance for any knowledge of how this processing works.
Carrie |
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steve-myers
Active Member
Joined: 30 Nov 2013 Posts: 917 Location: The Universe
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As far as ISPF goes, your observation is not correct.
When you edit an existing sequential data set ISPF allocates the data set with exclusive control; it stays that way until you exit from the edit session. |
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Carrie Da Silva
New User
Joined: 16 Nov 2017 Posts: 2 Location: USA
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Steve,
Thank you for the reply. We have an exit in dynamic allocation and I can see two distinct different calls (very close together) for this ps dataset. The first has a text unit of disp=shr and the second has disp=old. I discussed this with a developer in allocation who saw the same behavior. There must be a reason for this, maybe to see if it is actually even possible to edit the file at this time. |
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Pedro
Global Moderator
Joined: 01 Sep 2006 Posts: 2589 Location: Silicon Valley
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I think you have to ask IBM about their design choices. The people here are users of ISPF, but do not have access to IBM source code to see what is actually being done. |
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