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From Bryan Pendleton <bpendle...@amberpoint.com>
Subject Re: OOM with millions of weakly-referenced Derby objects
Date Wed, 18 Nov 2009 23:40:41 GMT
> I will attempt running the command via ODBC directly, with the FETCH syntax, and produce
a heap histogram (is there anything in particular you are looking for or a specific tool output
-- I generally use jprofiler).

This sounds like a great next step, please let us know what you find.

As another useful step, you could run that command using the Derby "ij"
tool, and set derby.language.logQueryPlan=true, and then post the
query plan information from your derby.log.

thanks,

bryan


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