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Jeff,

I've implemented SWA here.  There's nothing special about using QCTL vs.
another subsystem as long as all user jobs have ended.  I submit the
monitor job to a subsystem that we already had set up for I.T. jobs.  The
program doing the SWA just runs in the user jobq under the QBATCH subsytem.
We get to a "semi-restricted" state by individually ending just about all
other subsytems and ending TCP/IP to kill any ODBC, FTP, and 5250
connections.

I am reconsidering restarting TCP/IP before the checkpoint has been
achieved.  We had a glitch a month or so ago where there was an error with
the tape drive and there was a QSYSOPR message with no way to answer it
except to drive in (which I did at midnight).  If I had TCP/IP running I
could have used a QCTL session that I've got to get in remotely and answer
it.  That hardware issue was the only problem that we've had, which wasn't
really a problem with SWA.

Dave Parnin
Nishikawa Standard Company
Topeka, IN  46571
daparnin@xxxxxxxxxxxxxxxxxx




                                                                                
                                 
                      Jeff Crosby                                               
                                 
                      <jlcrosby@dilgardfoo        To:       Midrange Systems 
Technical Discussion                
                      ds.com>                      
<midrange-l@xxxxxxxxxxxx>@SMTP@CTB                            
                      Sent by:                    cc:       (bcc: David A 
Parnin/Topeka/NISCO/SPCO)              
                      midrange-l-bounces@m        Subject:  RE: Save while 
active (SWA)  question                
                      idrange.com                                               
                                 
                                                                                
                                 
                                                                                
                                 
                      10/21/2004 07:04 AM                                       
                                 
                      Please respond to                                         
                                 
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Evan wrote:

> Why wouldn't you do them both in batch ? (just curious)

Up to now I've not used SWA so it had to be interactive.  I did an ENDSYS
for the *ALLUSR backup.  Though I'm not starting with the *ALLUSR backup, I
wanted to keep them all "the same" in style.

> I don't really have a recommendation either way, or more
> exactly a good reason for why I'd probably go with Option 1.

I was thinking that way yesterday also.  But today I'm leaning a little
more
toward #2.  Batch has more CPW so it seems, at least on the surface, to do
the heavier lifting there.

> Whichever way you go, build a timeout into
> your restart job to make sure it doesn't wait forever for the
> SWA checkpoint when the inevitable error comes along.

Good idea.  I had not thought of that.

--
Jeff Crosby
Dilgard Frozen Foods, Inc.
P.O. Box 13369
Ft. Wayne, IN 46868-3369
260-422-7531

The opinions expressed are my own and not necessarily the opinion of my
company.  Unless I say so.



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