Alex,
Yes, the connection remains open unless it is
explicitly closed (see Note: 1034343.6).
The session also takes out a lock on the local RBS
(see Note:74811.1) as this could be part of a
distributed transaction. If this is a long running
query this can lead to abnormal growth in the RBS
since the active transaction in the RBS will prevent
the RBS from wrapping into that extent. You can avoid
this by issuing SET TRANSACTION READ ONLY; prior to
running the distributed query.
AFAIK, you can use MTS connections, although I would
recommend using dedicated connections for any links
used for replication (push and refresh operations).
HTH,
- Anita
- "Hillman, Alex" <Alex.Hillman_at_usmint.treas.gov>
wrote:
> So you mean that connection to the remote DB stays
> open until session ends
> which issued query on remote DB. Are these
> connection dedicated? I think yes
> bur did not check. Is it possible to use MTS for
> such connection? And all
> new features like connection pooling etc.
>
> Alex Hillman
>
> -----Original Message-----
> Sent: Monday, July 09, 2001 6:55 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Yes, it creates a session. If you want to do a(n)
> SQL trace, you can do a
> SELECT 'x' FROM dual_at_remote_site, find the session
> at the remote site and
> turn on the trace, then run your next query.
>
> Henry
>
> -----Original Message-----
> Sent: Monday, July 09, 2001 5:06 PM
> To: Multiple recipients of list ORACLE-L
>
>
> If I query table in the remote database using
> database link does user in the
> remote database which is referenced in the database
> link create session in
> the remote database and if not could somebody
> explain how remote query is
> executed.
>
> Alex Hillman
>
> P.S. I know that I could try it myself but I am
> layzy (sp?) and tired
> (fighting with Ross for access to printing presses
> :-) )
> --
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> Author: Hillman, Alex
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Received on Tue Jul 10 2001 - 10:39:08 CDT