When will ADRDSSU start to ENQUEUE on data sets?
- From: johnny.xingkui.luo@xxxxxxxxx (Johnny Luo)
- Date: 29 Apr 2008 20:09:10 -0700
Hi,
We encountered a problem on our production system.
A job was using DSS to backup a lot of data sets (logical dump) and we got
ADR321E for one extended format PS data set: the data set was not on the
supposed volume.
This job will run more than 3 hours and we found out that another job will
delete the data set and re-create it during that time (1.5 hours after the
dump job starts). It might be the cause of ADR321E.
And from the archive I found a similar thread:
It is entirely possible that when DFDSS was building his process list the
dataset was on the volume. Between that time the dataset probably got
deleted
and re-allocated. Naturally when DFDSS went to copy the dataset later on,
it
wasn't there. Hence the error message.
Moral of the story: Don't delete datasets until after DFDSS has copied
them.
Does that mean there is a time interval between DSS located the data set via
catalog and DSS actually places the ENQUEUE on it?
If it's true, from our experience this time interval for a big dump job is
very long. Thus give another job the chance to delete the target data set.
Do we have any method to ask DSS to ENQUEUE earlier?
Thanks.
--
Best Regards,
Johnny Luo
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