EJB TX_REQUIRES_NEW and XA Transaction

yanfengzhang816 Jun 13, 2009 7:27 AM

Hi there,
In our system, there are 2 SLSBs, say SLSB1 and SLSB2, using different datasources, both of the datasources are XA datasource.

SLSB1 is marked as TX_REQUIRED and SLSB2 is marked as TX_REQUIRES_NEW;

A method in SLSB1 calls a method in SLSB2.

My question is, will transaction for the SLSB2 method be committed after the method finished? or it will not be committed until SLSB1 method finished?

Thanks in advance...

1. Re: EJB TX_REQUIRES_NEW and XA Transaction

ben.cotton2 Jun 13, 2009 7:56 AM (in response to yanfengzhang816)

Generalized, from EJB specification on how TX_REQUIRES_NEW behaves in the context of an existing transaction:

In your case

when the executing SLSB1.method() invokes your SLSB2.method() the container does the following

1. Suspends existing transaction (SLSB1.method())
2. always starts a new transaction (SLSB2.method()), and tries to commit this new transaction before sending SLSB2.method() results to the invoker (SLSB1.method()).
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2. Re: EJB TX_REQUIRES_NEW and XA Transaction

yanfengzhang816 Jun 14, 2009 6:20 AM (in response to yanfengzhang816)

ah...Thanks....
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