RE: Resolving dblinks
- From: "Rudy Zung" <Rudy.Zung@xxxxxxx>
- To: <george.rusnak@xxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 24 May 2005 11:14:01 -0400
Here's the chain of events:
Client SQLPlus logs in using client's TNS settings (TNS_Admin to =
client's
TNSNAMES.ORA)
Client then uses a db link:
Database must already have database link created
Database open new connection specified by db link by using database
server's TNSNames.ora
In other words, since the database link is being opened by the database
server, only the TNS settings on the server itself are important; the
database cannot see what TNS environment the SQLPlus client is running =
under.
...Rudy
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx =
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Rusnak, George A. (SEC-Lee) CTR
Sent: Tuesday, May 24, 2005 11:08 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Resolving dblinks
One of our databases was started with TNS_ADMIN set to a directory where
there was no TNSNAMES.ORA file. Now, when a remote user starts an =
Sqlplus
session and attempts to use a synonym using a dblink, the result is
'ORA-12154: TNS:could not resolve service name'.
When I am logged on the host and start an Sqlplus session and use the =
same
synonym, the query works.
How is the database link resolved when running on the host as opposed to =
a
session started from a remote user????=20
Thank you in advance !!!
Al Rusnak
Oracle Certified Professional
DBA - Computer Operations
* 804-734-8210
* george.rusnak@xxxxxxxx
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