On Wed, 2010-02-24 at 09:13 -0800, James H. H. Lampert wrote:
Mike Amos wrote:
What level of OS is the customer running? Does this happen with only one
file or multiple files? Is journaling or some other service running
against the affected files? Have you checked the see if there are any
APARs against this or a similar problem?

I just got the joblog this morning.

They're on V5R4M0.

And I'm onto something: I saw two "open options ignored" messages
regarding the file, both of them involving shared open data paths.

The application opens the file twice, and doesn't use shared ODPs.

I changed a copy of the file on our V4 box to SHARE(*YES), and suddenly
I could duplicate the problem freely.

Now that I know what the problem is, and given that this is an
application that opens user-specified files, what do I do about it?

OVRDBF SHARE(*NO), perhaps? For what it's worth, I just tried that in a
system() call, and the override did not take effect in the C program.



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