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MQSeries.net Forum IndexGeneral IBM MQ Supportprocess amqzlaa0 died / RC=2009 / IPC connection /MQ 8.0.0.9

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frodon
PostPosted: Thu Jul 25, 2019 12:47 am Post subject: process amqzlaa0 died / RC=2009 / IPC connection /MQ 8.0.0.9 Reply with quote

Newbie

Joined: 06 Jun 2008
Posts: 4
Location: Luxemburg

Context :
MQ Server version 8.0.0.9 on AIX
JVM IBM Java 1.8. Program opening up to 240-260 connections in IPC mode (local Qmanager, no channel used).
Sometimes, randomly, lost of connection on a couple of queues

ERROR 19.07.2019 00:06:21,231 [Thread-142] (MqConnection.java:146) - Error (MQJE001: Completion Code '2', Reason '2009'.) getting message message:

At time of error, a FDC is created
| Probe Type :- HALT6109 |
| Probe Severity :- 1 |
| Probe Description :- AMQ6109: An internal WebSphere MQ error has occurred. |
| FDCSequenceNumber :- 0 |
| Arith1 :- 11 (0xb) |
| Comment1 :- SIGSEGV: invalid address permissions(2808) |
| Comment2 :- Exception occured within MQ context without xihTHREAD |

As the program could open more than 255 connections from the same process, suspected "max handle per process"
made :
alter qmgr MAXHANDS(350)

don't seems solving the issue.

Any clue about where to look to understand what's happening ?

Kind regards,

Frodon
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Andyh
PostPosted: Thu Jul 25, 2019 6:34 am Post subject: Reply with quote

Disciple

Joined: 29 Jul 2010
Posts: 172

The minimal information supplied here doesn't look obviously consistent in that threads within the amqzlaa0 process should almost always have an xihTHREAD context (except for a tiny amount of time during thread initialization/termination).

Unless you've deployed any exits that could run code inside the amqzlaa0 process (e.g. WLM exit or user written OAM) then this looks like an internal MQ issue, is there some reason you haven't gone down the PMR route ?
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