Ian McCallion wrote:
>
> Jouni Juutinen wrote:
>
> > Does anyone have experiences of MQSeries participating in EJB
> > transactions? For example if one transaction includes Entity Bean
> updating
> > database table (JDBC) and a Entity or Session Bean inserting a message
> > into MQSeries queue. Obviously I would like this whole transaction to
> > commit or rollback as one entity. I quess this would require
> transactional
> > resource manager for MQSeries. Native MQSeries access (MQSeries binding
> > for Java) supports syncpoints but that's not JTS compliant. Do I have to
> > wait for JMS-version of MQSeries (when that one will be available?)?
>
> As you say, it is highly desireable that the putting and getting of
> messages to queues can be committed or backed out under syncpoint control
> and this does indeed require that MQSeries be a transactional resource
> manager.
>
> In fact MQSeries is already a transactional resource manager supporting the
> (pre-java) open standard for coordination of transactional resource
> managers, XA. Unfortunately, no EJB servers today are based on XA, hence no
> there is currently no coordination between MQSeries and EJBs.
Not quite true. Netscape Application Server 4.0(currently in beta)
uses XA for TM - RM interaction and it allows you to plug in RMs
that are XA compliant. We have not certified against MQSeries yet
for lack of cycles but I expect it to work.
Sanjay
>
> This will be resolved soon, not sadly by EJB servers supporting XA, because
> Sun is promoting the java-only JTA standard for achieving exactly the same
> thing(*). Hence MQSeries will support JTA in a future release and will
> thereby be able to be coordinated by any JTA-compliant EJB server.
>
> You will not have to wait for MQSeries support of JMS - the two items are
> unrelated.
>
> (*) Who was it who said "the computer industry is totally committed to
> standards - that is why we have so many of them"?
>
> Ian McCallion
> CICS Business Unit
> IBM Hursley
> [EMAIL PROTECTED]
> Tel: ++44-1962-818065
> Fax: ++44-1962-818069
>
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