Applied Dimensionality

Memory leaking in Cognos 8.3 BI

Posted at — Oct 20, 2009
Memory leaking in Cognos 8.3 BI

You know why i’ve started this blog in the first place? To get advice, of course. And today DesiCresnet shared a wonderfull piece of information concerning memory troubles in BI 8.3.

Those who aren’t struck by occasional CAM-AAA-0071 “An internal error occurred” which stops the whole server can skip this post.

This error was discussed at:

The story goes like this:

This error occurs more often in heavy-usage enviroments. In one of our projects, with lots of Event triggered admin-links and reports, it took only a coulple of hours before it striked.

Solution is not complete, but as I see it now:

  1. Put the latest SP on BI (or a special hotfix, if one is avalaible)
  2. Lower the avalaible memory for Cognos BI service (to 768 mbs)
  3. Modify the HeapDecommitFreeBlockThreshold registry property

It’s interesting if 8.4 is prone to such error.

PS: I’m a certified Cognos Technical Specialist now as well. Need to get first-line support partnership, you know )

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