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MQSeries.net Forum Index » General IBM MQ Support » MQ JMS Client generating huge number of FDC files incase

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ArchieOops
PostPosted: Tue Jun 25, 2013 9:20 am    Post subject: MQ JMS Client generating huge number of FDC files incase Reply with quote

Newbie

Joined: 18 Nov 2011
Posts: 6
All,

thanks in advance for all the help!

We are using JMS MQ client v7.5.0.0 with our application. We have set the
set JAVA_OPTS=%JAVA_OPTS% -Dcom.ibm.msg.client.commonservices.ffst.suppress=1

But, still a lot of FDC files are getting generated and it ends up filling the disk space.

I found the below for the FFST configuration, but some how '1' does not seem to work for us.

Will using '-1' be a better option?

There are three modes of operation:

The default of 0 is to output all FFDCs.
Specifying -1 causes only the first FFDC of a particular type to be output
Specifying any other positive number suppresses all FFDCs except those that are multiples of the positive number.

http://www-01.ibm.com/support/docview.wss?uid=swg21433395
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mqjeff
PostPosted: Tue Jun 25, 2013 9:31 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447
Every number is a multiple of 1. So that's why setting it to "1" doesn't help.

An app should not be routinely generating FDCs - on the client side or on the server side.

If it is routinely generating FDCs, then either the app is badly coded or the infrastructure is really broken.

You should be spending time categorizing the FDCs and working to resolve them.

In the meantime, to limit the impact of the system caused by a high number of FDCs being generated, the -1 option is the best overall. It will still let you know what FDCs are being created, but it will only log the first one after startup.
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