Re: JES2 DD Concatenation issue
- From: mark.zelden@xxxxxxxxxxxx (Mark Zelden)
- Date: 28 Mar 2008 13:43:57 -0700
On Fri, 28 Mar 2008 14:32:48 -0500, Mark Zelden <mark.zelden@xxxxxxxxxxxx>
wrote:
The "flooding" part is always how I thought it worked (and maybe it
did but has changed). See my last post:
http://bama.ua.edu/cgi-bin/wa?A2=ind0803&L=ibm-main&D=1&amp;O=D&T=0&P=214254
Maybe it would be fixed after 10 jobs where submitted in a row with the
non-existing JES2 PROCxx DD.
Anyway... any time this has ever happened in a shop I was at (which has
probably been no more than 5 times in the past 15-20 years) I have always
just bounced JES2 (after making sure the PROCLIB existed and / or was moved
back to its proper location). It's quick enough and always fixes the problem.
Lots more of this in a few IBM APARs. OY45900, OW51308 and II07133.
You need IBMLINK to look at OY45900 and OW51308 as I can't find
a docview link to them. OY45900 doesn't mention anything
about "round robin" usage of the converter tasks:
"Thus, if there are multiple Converter PCEs /
tasks it will be necessary to abend JES2 and restart it to
guarantee that all proclibs are freshly opened ($P JES2,ABEND
.. HOTSTART)."
And here in II07133 (from 1993) there is more...
http://www-1.ibm.com/support/docview.wss?uid=isg1II07133
However, II07133 says:
Note: It is NOT necessary to force a close and open of a
Proclib after it's been compressed. Any I/O errors
resulting from a compress would have occurred while the
compress was in progress, and THAT would have forced a
close and open of the proclib. If no I/O errors occurred
while the compress was in progress, then no I/O errors
would be expected after the compress had completed, and
thus it is NOT necessary to perform the close and open.
In my experience, the statement above is not true. I have seen
problems caused by compress when no I/O errors occurred.
OW51308 is more recent and mentions using the dynamic proclib
facility in z/OS 1.2 instead of bouncing JES2. But it doesn't mention
anything about a COMPRESS.
Mark
--
Mark Zelden
Sr. Software and Systems Architect - z/OS Team Lead
Zurich North America / Farmers Insurance Group - ZFUS G-ITO
mailto:mark.zelden@xxxxxxxxxxxx
z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/
Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html
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