Oracle-L: RE: Rogue TNSNAMES.ORA files Revisited

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Wed, 29 Jan 2003 10:29:08 -0800
Message-ID: <F001.0053D89B.20030129102908@fatcity.com>

Yup ... learned it the hard way !! At-least AIX is *normal* (fingers crossed).

Raj

Rajendra Jamadagni MIS, ESPN Inc. Rajendra dot Jamadagni at ESPN dot com
Any opinion expressed here is personal and doesn't reflect that of ESPN Inc.

QOTD: Any clod can have facts, but having an opinion is an art! -----Original Message-----
Sent: Wednesday, January 29, 2003 1:14 PM To: Multiple recipients of list ORACLE-L

A few days (or was that weeks??) ago, someone posted some problems they were having connecting to a database defined in their tnsnames.ora file. The problem was resolved when they found out that there was a 'rogue' tnsnames.ora file residing in the same directory as the binary. The binary file was resolving a database's address by using the local tnsnames.ora first.

I recently had a similar issue (a long story, available on http://www.clanmcgraw.com/oracle.html for those interested) where sqlplus was resolving a database address by using a tnsnames.ora file stored in /var/opt/oracle (on Solaris 8). I thought that was because I did not have the TNS_ADMIN environment variable set properly by the oraenv file.

I did some research on Metalink, and under Note 114085.1, found the following information that others might find useful: Windows NT/2000 running Oracle 9i

First: The directory where the application is launched. For example, if sqlplus resides in

ORACLE_HOME\bin\sqlplus but was launched from the c:\temp directory, then

c:\temp is searched for a tnsnames.ora file. Second: The value of the TNS_ADMIN environment variable. Third: ORACLE_HOME\network\admin
Sun Solaris running Oracle 8i or 9i

First: The oracle user's home directory is searched for a hidden '.tnsnames.ora'

Second: The value of the TNS_ADMIN environment variable. Third: /var/opt/oracle
Fourth: $ORACLE_HOME/network/admin
Some were talking about an April Fool's joke with local tnsnames.ora files. I think you'd have a lot more fun with the .tnsnames.ora file, if you're on Solaris. J

Hope that information is useful to someone out there...

Brian

| Brian McGraw /* DBA */ Infinity Insurance |
| mailto:Brian.McGraw_at_Infinity-Insurance.com |

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Author: Jamadagni, Rajendra
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Received on Wed Jan 29 2003 - 12:29:08 CST