ADSM-L

Re: Very Puzzling Sessions lost

2003-01-17 10:03:37
Subject: Re: Very Puzzling Sessions lost
From: "Conko, Steven" <sconko AT ADT DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 17 Jan 2003 08:02:59 -0700
ive tried both ways... to disk and to tape. during the day and at night.
manually and scheduled. high load and no load. its always the same.

-----Original Message-----
From: George Hagopian [mailto:GHagopian AT ICTGROUP DOT COM]
Sent: Friday, January 17, 2003 9:59 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Very Puzzling Sessions lost


I've had a similar problem...might be of some help

I had a server that would never finish and almost always fail at a certain
point, it would tell me session terminated by user...no other
explanation...if I run the backups maually it would almost always
finish...but that was also during the day and not at the scheduled backup
time...

What I did, was increase the number of drives that the server would use
during the backup...originally it was one tape drive and increased it to two
tapes drives...problem disappeared and not reoccurred...not sure if you are
writing directly to tape or to a disk pool.

My 2 cents
ghag

-----Original Message-----
From: Conko, Steven [mailto:sconko AT ADT DOT COM]
Sent: Friday, January 17, 2003 9:42 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Very Puzzling Sessions lost


We have some very strange session lost errors showing up on our client.
First the particulars:

Server is AIX 4.3.3 ML 10, TSM V4.2.2
Client is AIX 4.3.3 ML 10, TSM V5.1.5.5 (upgraded several times from V4.2.2
at TSM Support request to deal with this problem)

Client and server are on separate 100 Mb full duplex subnets.

There are other AIX 4.3.3 ML 10 clients on the same subnet as the failing
client that do not get any errors. network option (no) settings are the same
on both clients. dsm options have been modified on the failing client to
reflect those on the successful client in troubleshooting to ensure
differing options are not causing a problem.

The client having the problem will start a backup (incremental or archive,
scheduled or manual) and suddenly "freeze" for several minutes before
severing the socket connection and will proceed to reconnect/timeout almost
continuously. Sometimes it appears to stop in the same spot, other times
not. There doesnt appear to be any reason why certain files would cause a
problem (i.e., they are not open at the time).

Any idea what i can check? I have tried everything... all sorts of settings
in dsm.sys and no settings. There are not any errors reported on the system
itself. just "session lost" on the client and "session terminated" on the
server. Ive been working with IBM TSM Support for quite sometime and they
just keep wanting more traces and "upgrade to the latest client."

Im at my wits end.

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