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From Charlie Hubbard <charlie.hubb...@gmail.com>
Subject Re: GenericPreparedStatements leak due to DependencyManager?
Date Thu, 18 Feb 2010 19:45:01 GMT
Actually I see this as well.  I had over 690,000 of these laying around, and
I am using Derby 10.5.3.  I don't know if I have a test case that I can
share, but within my program when I profile it I see a lot of these.  They
look like they are weakly referenced, but the GC doesn't want to give them


On Wed, Feb 17, 2010 at 6:34 PM, Knut Anders Hatlen <Knut.Hatlen@sun.com>wrote:

> Sumedh Wale <sumwale@fastmail.fm> writes:
> > Hi
> >
> > I noticed OOM issues in one of the test runs that creates quite a good
> > number of PreparedStatements. Looking at the hprof dump and the code,
> > it looks like GenericPreparedStatements are being held on to by
> > BasicDependencyManager even after having being expired from LCC's
> > CacheManager. I looked at JIRA but did not find any existing bug for
> > this -- is it a known issue? One fix can be to explicitly invoke
> > DependencyManager#clearDependencies() for the GenericPreparedStatement
> > from CachedStatement#clearIdentity(). This is with 10.4.x and I have
> > not yet tried with latest 10.5 release.
> Hi Sumedh,
> I haven't heard about this issue before, so if you still see it with
> 10.5 it would be great if you could file a bug report with instructions
> on how to reproduce it.
> Thanks,
> --
> Knut Anders

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