Hi,
Usually for any transaction, a connection to a database is opened and then
the transaction is started. However in my program, I tried to open a
database connection after the begin method of UserTransaction interface of
jta. I did not get any error though I was expecting one. The transaction did
a commit successfully. Can anyone explain how this connection gets
associated with the transaction even if it is opened after the transaction
has begun?
Regards,
Krithika
-----Original Message-----
From: James Cook [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 20, 2001 7:01 PM
To: [EMAIL PROTECTED]
Subject: Re: Doubt in CMT
Smoke and mirrors. The connection.close() does not actually close.
Even if they do close in some implementations, they register themselves with
a
TransactionManager that is in charge of issuing the final commit to all of
the
resources involved in the transaction.
jim
----- Original Message -----
From: "krithikav" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, April 20, 2001 8:59 AM
Subject: Doubt in CMT
> Hi,
> I have a doubt in the basic concept of Container Managed Transaction.
> In one of the business method(with transaction attribute: TX_REQUIRED) of
my
> EJB, I
> do the following:
>
> open a connection to the database
> try{
> update table A
> update table B
> }
> catch (Exception e)
> {
> close the connection
> throw a remote exception
> }
> close the connection.
>
> Now if the update to the table B fails and it results in an exception and
> then I close the connection and throw a remote exception to the container,
> how will the container rollback the entire transaction when the connection
> is closed and it is no longer available for the container.
>
> Regards,
> Krithika
>
>
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