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From Tim Bain <>
Subject Re: Can ActiveMQ take advantage of Oracle transparent application failover?
Date Wed, 26 Apr 2017 19:40:41 GMT
Pluggable storage lockers ( could let you
work around any issues with the locking behavior under this configuration.

The code for the current Oracle interface is at
The code isn't all that complicated, so if you wanted to implement a TAC
capability, it wouldn't be too complicated of a task. And if you contribute
the code back to us, you won't have to maintain it and apply it to future
versions when you upgrade.


On Apr 26, 2017 9:29 AM, "" <>

> Thanks Steve, good point.
> In this standard Oracle RAC configuration the SCAN listener effectively
> plays the role of load balancer. Active MQ connects to the database through
> port 1610 and then is directed to node a or node b on port 1521.
> I’ve found an Oracle DocID: How To Configure Server Side Transparent
> Application Failover (Doc ID 460982.1) with which I going to experiment.
> This as opposed client-side where somehow modifying Active MQ to include
> the
> OCI (Oracle Call Interface) code to perform the node switch.
>  It looks like it will depend on how the Active MQ is querying the
> ACTIVEMQ_LOCK table and how often if Oracle will seamlessly redirect to the
> surviving node.
> Thanks for comments and suggestions, please keep them coming.  I’ll post
> progress.
> Thanks,
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> failover-tp3526485p4725245.html
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