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From "James.Strachan" <>
Subject Re: Can I use Journal only?
Date Thu, 18 Jan 2007 17:55:05 GMT

Tony Qian wrote:
> Can I use journal only? If yes, how to configure it? 

Not really; the journal is only designed for performance and with short term
recovery in mind. However the Kaha persistence engine extends the journal
rather like BDB does, to keep the journal as the long term persistence data
and maintaining an index into the logs (and doing garbage collection etc).
So you your persistence options are...

* no persistence
* pure JDBC
* journal + JDBC
* kaha (which includes the journal)

Tony Qian wrote:
> I'm really confused with this statement from ActiveMQ site about
> Journal. It seems you have to use database for durable subscription.
> What about broker never reaches journal checkpoints? 

The broker can recover from the journal.

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