Re: [eclipselink-users] memory usage

[Tim Hollosy <hollosyt@xxxxxxxxx>]

One other thing to look at is batch writing:
http://wiki.eclipse.org/Optimizing_the_EclipseLink_Application_%28ELUG%29#How_to_Use_Batch_Writing_for_Optimization

Not sure if it will solve the memory issues, but may help.

./tch



On Mon, Oct 19, 2009 at 6:07 PM, David Parker <dap@xxxxxxxxxxxxxxxxxxxx> wrote:
> Yeah, we are using multiple transactions, i.e.
> get an EntityTransaction
> do work
> EntityTransation.commit()
> set the local tx to null
>
> On Oct 19, 2009, at 5:59 PM, Dave Brosius wrote:
>
> Is the import all in one transaction? I'd be curious if you broke up the
> import (even for a test) into multiple transactions whether the issue would
> go away.
>
> -----Original Message-----
> From: "David Parker" <dap@xxxxxxxxxxxxxxxxxxxx>
> Sent: Monday, October 19, 2009 5:51pm
> To: "EclipseLink User Discussions" <eclipselink-users@xxxxxxxxxxx>
> Subject: [eclipselink-users] memory usage
>
> I am running a long data import that uses eclipselink 1.1.2 for
> persistence. I see memory increasing slowly but surely as it goes
> along. The YourKit profiler does not identify anything as a link, but
> I do seem to have an increasing "retained size" for
>
> org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork
> [Stack Local]
>
> I see there is a clear method on TransactionWrapperImpl, but that does
> not seem to be in the JPA EntityTransaction API.
>
> Is there a best practice for long running data imports? Should I be
> clearing something?
>
> Thanks.
>
>
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