Re: J2C and resource reference

As with any re ref (datasource, JMS queue connection factory etc),
they allow your java code to be independent of the structure of the
extrernal JNDI tree. In case your JTA transaction is controlling your
CICS transaction, using res-refs (and "java:comp/env/..." look-ups),
is the only means by which you can look up the managed connection in
a way that the transaction context is propagated to CICS.

This is documented in the J2EE spec, section J2EE.5.4 (Resource
Manager Connection Factory References) of the J2EE spec version 1.4.

/Johan

On 9 aug 2005, at 22.19, ahtwog wrote:

> Hi,
> I invoke CICS transaction from EJB.what is the advantage in
> adding "Resource reference" for the J2C connection factory in EJB's
> deployment descriptor (reference tab).The default values for
> authetication
> and isolation level are only needed in my EJB.
> Pls. let me know .Thanks in advance.
>
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