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| Very large !!GHOST! folders in MQ file tree |
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| fjb_saper |
 Posted: Wed Apr 27, 2011 7:50 pm Post subject: Re: Please check my other post if it provides the answer. |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| Gerd-in-ZA wrote: |
This item has been idle for about a year now. I just posted a possible resolution to the (much younger) post of "Millions of messages loaded into SYSTEM.MANAGED.DURABLE.XXXX"
Inside the "queues" directory should only be directories representing queues - your 21 ghost directories seem to be permanent dynamic queues representing the durable subscriptions I wrote about in that other post.
(I am theorizing here, it would be nice if you could verify this). |
Ahhh.... Permanent dynamic queues!. These need to be cleared up by the MQ Admin. Probably on a regular basis... (I'd say using mqsc)... and after having removed the durable subscription that writes to them...
Have fun 
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| mvic |
| Posted: Thu Apr 28, 2011 2:00 pm Post subject: Re: Please check my other post if it provides the answer. |
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Jedi
Joined: 09 Mar 2004
Posts: 2080
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| fjb_saper wrote: |
| Ahhh.... Permanent dynamic queues!. These need to be cleared up by the MQ Admin. Probably on a regular basis... (I'd say using mqsc)... and after having removed the durable subscription that writes to them... |
What if the durable subscriber comes back and wants its messages? |
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| fjb_saper |
| Posted: Thu Apr 28, 2011 7:18 pm Post subject: Re: Please check my other post if it provides the answer. |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| mvic wrote: |
| fjb_saper wrote: |
| Ahhh.... Permanent dynamic queues!. These need to be cleared up by the MQ Admin. Probably on a regular basis... (I'd say using mqsc)... and after having removed the durable subscription that writes to them... |
What if the durable subscriber comes back and wants its messages? |
My understanding was that in his case it was caused by a problem with MQExplorer, and in case of a return a new subscription would have been created. In my experience it is never a clear cut administration when you deal with permanent dynamic queues. The application needs to have a way of storing the names of the queues it needs and/or creates and a way to clean up after itself.
Any other design creates a proliferation of queues that then lie unused, and a cleanup nightmare for the MQ Admin...
So if the durable subscriber comes back and wants its message, you should not have a proliferation of permanent dynamic queues, or it should ask for the subscription to be delivered to a regular permanent queue!
Just my 2 cents...
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