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From "stefan.moser" <>
Subject Re: Changing the reference store for the AMQ Message Store
Date Wed, 15 Apr 2009 16:52:20 GMT

Thanks for your reply Dave.

I'll try your first two suggestions and see how it goes.  I've been getting
the error about once a day, so I should see results soon.

Right now I'm just running ActiveMQ on my dev machine.  Quad core 2.40GHz,
4GB RAM running XP SP3, standard disk, plenty of space, nothing unusual
about it at all.  I start and stop the broker through the services console,
so it should be stopping correctly.  I've seen the error occur when I
restart a consumer, or just randomly during the day.

I have the early access program to ActiveMQ in Action which I have been
using to guide most of my configuration.


Dave Stanley wrote:
> It seems as though your message store has been corrupted. You will
> probably
> need to wipe the <AMQ>/data directory to start from a clean
> In order to try and narrow down why this might be occurring:
> 1) Try test without the java service wrapper (standalone broker) and see
> if
> it makes any difference
> 2) Try and enable syncOnWrite=true for the persistenceAdapter and see if
> that helps
> 3) Can you post some specs on the machine your using for your it
> particularly fast? anything unusual about the disk setup?
> 4) How are you stopping your broker. Are you using the windows scm (or
> killing it using the windows task manager ..).
> Hope this helps,
> /Dave
> On Tue, Apr 14, 2009 at 4:19 PM, stefan.moser
> <>wrote:
>> In the documentation
>>  for
>> the AMQ Message Store, it mentions that it uses Kaha by default for the
>> reference store.  I'm assuming then that there are other options for the
>> reference store, but I can't find any mention of them.  I'm new to
>> ActiveMQ,
>> so maybe I'm just not recognizing the lingo.
>> The reason why I would like to look at other reference stores is that I'm
>> currently experiencing a halting problem with my current AMQ Message
>> Store
>> setup,
>> detailed here .  I've tried switching to JDBC persistence using Derby,
>> but
>> it's too slow for my needs.
>> Can someone please help!
>> Cheers,
>> Stefan
>> --
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