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| Trace Node |
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| fcotait |
 Posted: Wed Oct 08, 2003 10:07 am Post subject: Trace Node |
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Acolyte
Joined: 28 Feb 2002
Posts: 63
Location: Sao Paulo - Brazil
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Hi all,
I have some messages flows with node trace (to file).
When I delete this traces, the broker didn´t re-create these files, only when I do a deploy the trace files are created again.
This happend only in AIX. On Windows I can delete traces files and the broker re-create the files.
My WMQI is 2.1 CSD 04 on AIX 4.3.3
Any Idea ?
Thanks
_________________
Filipe Cotait
IBM Certified System Administrator - WebSphere MQ
IBM Certified Specialist - MQSeries, WebSphere MQ Integrator |
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| wmqiguy |
| Posted: Wed Oct 08, 2003 11:02 am Post subject: |
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Centurion
Joined: 09 Oct 2002
Posts: 145
Location: Florida
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I don't know exactly what the broker is doing, but I can confirm that we have this behavior on a Solaris machine also. Kind of a pain, but I usually just vi the file and then dd the required number of lines, instead of deleting it. Example for a 240 line file:
<esc>240dd
If you aren't too picky about a blank line at the beginning:
echo > yourFile.txt
This will replace your file with only a HEX 0a in the file.
Good times.....good times.  |
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| kolban |
| Posted: Wed Oct 08, 2003 12:41 pm Post subject: |
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Grand Master
Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA
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I can imagine what is going on here ...
When the TRACE nodes are reached, they open the file and cache/keep the file open. In Unix, if an application (like WMQI/Message Broker) has an open file handle and the file is deleted externally, the application is unaware that has happened and does not close/re-open the file. As such, you lose the data that is logged. |
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| fcotait |
| Posted: Wed Oct 08, 2003 1:05 pm Post subject: |
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Acolyte
Joined: 28 Feb 2002
Posts: 63
Location: Sao Paulo - Brazil
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wmqiguy/Kolban
Now I understood what happen when I delete Traces Files
Thanks very much
_________________
Filipe Cotait
IBM Certified System Administrator - WebSphere MQ
IBM Certified Specialist - MQSeries, WebSphere MQ Integrator |
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