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IDS Forum

RE: XA Transaction blocking server

Posted By: Marcus Haarmann
Date: Tuesday, 5 September 2006, at 5:35 a.m.

In Response To: XA Transaction blocking server (Marcus Haarmann)

Now, the blocking is again active. DB is not responding any more to normal
transactions.
Onmode -l does not switch the log in this situation.
Other ideas ?

Marcus

-----Original Message-----
From: Ulf Åkerberg [mailto:ulf.akerberg@migrationsverket.se]
Sent: Tuesday, September 05, 2006 11:22 AM
To: marcus.haarmann@midoco.de
Subject: Sv: XA Transaction blocking server [7422]

Try to force a long transaction by doing onmode -l until you get it.

That's the way we used to do in 7.31 at least

Med vänlig hälsning /Regards

Ulf Åkerberg

Migrationsverket / Swedish Migration Board IT-enheten/ IT Department

SE-601 70 NORRKÖPING
Telefon 011 15 66 06 / +46 11 15 66 06
Mobil 0734 444 176 / +46 734 444 176
ulf.akerberg@migrationsverket.se

>>> marcus.haarmann@midoco.de 2006-09-05 10:35 >>>

Hi,

we encountered a problem on our development server, which lead to a blocking
IDS 10.0 instance:
We made a XA-Transaction containing two datasources on different IDS
instances.
For some reason, the transaction was aborted:
18:48:35 Aborting Long Transaction: tx 0x10f151398 no user info due to XA or
di stributed (2-phase commit) transaction
18:48:35 Session completed abnormally. Rolling back tx id 67, flags
0x108463b

Since this time, the server was blocked with LONGTX.
"Blocking on XA transaction, tx 0x10f147078, till it is cleaned up."

I found out that the transaction is active on both instances (onstat -x
shows them) and was able to kill a part of it with onmode -H (thanks to
Jonathan Lefflers email some years ago).
But the transaction seems to live somewhere:
Here is the onstat -x output from instance 1:
10b32edc0 --X-G 0 0 1428 1428 0xde048
COMMIT 0

instance2:
10e22edc0 --X-G 0 0 232 232 0x394048
COMMIT 0

Although the blocking is gone, I have no idea how to get rid of these
fragments.
onmode -H cannot remove these (seem to be of the wrong type ?).

The only solution I can think of is dbexport all databases and reinstall.

Our system is: Solaris 10(Sparc), IDS 10.00.FC4

Any ideas ?

Thanks,

Marcus

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