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| javagate |
 Posted: Fri Mar 31, 2006 3:58 am Post subject: Are there any conditions where a qmgr will STOP a SENDER |
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Disciple
Joined: 15 Nov 2004
Posts: 159
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Are there any conditions where a qmgr will STOP a SENDER on its own? I am trying to find out why some channels keep getting stopped.
The qmgr is on z/os.
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WebSphere Application Server 7.0 z/OS &
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| wschutz |
| Posted: Fri Mar 31, 2006 4:09 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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One that comes to mind is the case where a message can't be delivered and there is no DLQ. Is there anything in the CHIN log?
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| javagate |
| Posted: Fri Mar 31, 2006 4:13 am Post subject: |
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Disciple
Joined: 15 Nov 2004
Posts: 159
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I checked the CHIN and nothing jumped out at me. The ADMIN.CHANNEL.EVENT log is empty since we have a monitor. I seam to remember that a Sender can get stopped under certain conditions.
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| fjb_saper |
| Posted: Fri Mar 31, 2006 4:27 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| javagate wrote: |
| I checked the CHIN and nothing jumped out at me. The ADMIN.CHANNEL.EVENT log is empty since we have a monitor. I seam to remember that a Sender can get stopped under certain conditions. |
Well on a seqnum mismatch but you should see something in the logs.
Same if the msg size is bigger than the channel's max msgsize. (Yes I've seen it happen: chnl size set lower than default with the xmitq at default...)
How about target queue full and no DLQ ?
Least and not last after a hard disconnect (network) it is sometimes necessary to stop and restart the channel at both ends between the MF and distributed systems. This is just one more reason to have triggered channels as the occurrence of having to do a hard stop/restart is much much lower on triggered channels than the ones always open.
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| javagate |
| Posted: Fri Mar 31, 2006 5:52 am Post subject: |
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Disciple
Joined: 15 Nov 2004
Posts: 159
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according to IBM
For a channel to change to a Stopped state there must be one of the
following;
- STOP command,
- non-retryable error
- retry limit reached
now I know.
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| fjb_saper |
| Posted: Fri Mar 31, 2006 3:29 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Sorry I understood stopped as not working...
not necessarily in stopped status...
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| csmith28 |
| Posted: Fri Mar 31, 2006 5:26 pm Post subject: |
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Grand Master
Joined: 15 Jul 2003
Posts: 1196
Location: Arizona
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Well if DISCINT is set to anything other than (0) yes. The MQManager will in a manner of speaking issue a "stop chl(CHANNEL) status(inactive)" if no message arrives on the TRIGGER'ed XMITQ within the defined DISCINT interval.
The status of the Channel will not be STOPPED it will be inactive so if you issue a "dis chs(CHANNEL), it will echo "Status not found" or something similar.
If DISCINT is set to (0) then the MQManager will keep the Channel up as long as there are no problems.
If there are problems the SDR Channel will AMQ9999 End abnormally and the MQManager will continue to try to re-start the SDR Channel as defined by the value of SHORTTMR and then LONGTMR. During this time the SDR Channel will be in a RETRY status.
If the MQManager can not re-establish the connection using those thresholds it will issue a stop chl placing the SDR Channel in a status of STOPPED.
This is how I believe it works. If I am wrong anyone who knows better should feel free to correct me.
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