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From "Martin C." <>
Subject Re: Upgrade "in-production" from AMQ 5.3 to 5.5
Date Tue, 14 Jun 2011 14:14:40 GMT

first: I'm sure you'll need to test it using your data-store (you
could attempt to create a crash-consistent store by simply copying
your KahaDB directory).

I have had some deployments that went from 5.3.2-fuse to 5.4.2 and now
5.5.0, without losing any messages in the queue. So basically, it
should work.

Best regards,

On Tue, Jun 14, 2011 at 3:25 PM, Francois MAROT
<> wrote:
> Hi AMQ users,
> This is the 1st time I'm involved with AMQ and I must evaluate the risk of
> upgrading the production server from 5.3 to 5.5. FYI, I need to upgrade in
> order to use the priority of messages.
> So does anybody has any advice on how to migrate the production server ? It
> uses KahaDB as database.
> Can I simply stop the 5.3 server, then restart with the 5.5 binaries (having
> previously setup the config files to point to previous KahaDB files) and all
> my messages and queues will still be there ?
> Is there any caveat ?
> I still have not tested it myself and, obvisously, I can still write a
> little tool to read from the old AMQ and write back to the new one. I don't
> mind a few minutes downtime (up to an hour). But if anyone has prior
> experience, I take it ;)
> --
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