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From Kevan Miller <kevan.mil...@gmail.com>
Subject Re: Transaction Support in Geronimo
Date Tue, 02 Sep 2008 18:32:00 GMT

On Sep 2, 2008, at 1:49 PM, David Jencks wrote:

>
> On Sep 1, 2008, at 6:35 PM, Kevan Miller wrote:
>
>>
>> On Sep 1, 2008, at 5:59 PM, Juergen Weber wrote:
>>
>>>
>>> What is the state of Transaction Support in Geronimo? Are  
>>> distributed (XA)
>>> transactions supported, too?
>>> Googling for geronimo transaction site:apache.org did not give a  
>>> good
>>> result.
>>
>> Yes, they are supported -- it's a requirement of the EE 5  
>> specification.
>
> Maybe the terminology is not too clear.... distributed transactions  
> are not supported in geronimo.
>
> xa -- one transaction can involve many resource managers (databases,  
> jms, EIS, etc etc) but (unless distributed) only one server  
> involved.  This is supported.
>
> distributed -- in addition, work is done within one transaction on  
> several servers.  One way to implement this is to treat all but the  
> first servers as resource managers from the point of view of the  
> server that starts the transaction.
>
> Geronimo supports xa but we have no way to communicate the  
> transaction context between geronimo instances.  It wouldn't be too  
> hard but we haven't done it.

Thanks. I did mean to qualify my answer due to potential ambiguity in  
the question, but got distracted mid-stream... I assumed the request  
regarded standard XA support. Juergen can let us know what was really  
meant...

--kevan

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