RE: Where does sqlnet.ora live

  • From: Herald ten Dam <Herald.ten.Dam@xxxxxxxxxxxxxxx>
  • To: "Richard.Goulet@xxxxxxxxxxx" <Richard.Goulet@xxxxxxxxxxx>
  • Date: Thu, 17 Sep 2009 16:41:01 +0200

According to Metalink document 464410.1 the sequence is the next:


Search order for the sqlnet.ora

    1. The directory specified by the TNS_ADMIN environment variable, if set .
    2. The $ORACLE_HOME/network/admin directory.



Search order for the cman.ora, listener.ora, and tnsnames.ora

    1. The directory specified by the TNS_ADMIN environment variable, if set.
    2. One of the following directories:
        On Solaris:
              /var/opt/oracle
        On other platforms:
             /etc
    3. The $ORACLE_HOME/network/admin directory



Herald ten Dam

www.superconsult.nl



________________________________
Van: oracle-l-bounce@xxxxxxxxxxxxx [oracle-l-bounce@xxxxxxxxxxxxx] namens 
Goulet, Richard [Richard.Goulet@xxxxxxxxxxx]
Verzonden: donderdag 17 september 2009 16:31
Aan: oracle-l
Onderwerp: Where does sqlnet.ora live


This is a post for a friend who at the moment does not have posting privileges. 
 Steve could I kindly ask you to check on that fact for me??  Thanks.

Dick Goulet
Senior Oracle DBA/NA Team Lead
PAREXEL International
900 Chelmsford St, Suite 310
Lowell, MA 01821
978.614.2857
Richard.Goulet@xxxxxxxxxxx

SUBJECT: Default Search Hiearchy for Oracle
EMAIL ADDRESS: george.rusnak.ctr@xxxxxxxx


Please, I need some help/clarification.

What is the default search hierarchy for Oracle to locate the sqlnet.ora
file and the tnsnames.ora file(s)?
I found an Oracle doc that stated:

By default, Oracle Net configuration files are sought and resolved from
the following locations:

  1 TNS_ADMIN environment variable (incl. Windows Registry Key)
  2 /etc or /var/opt/oracle (Unix)
  3 $ORACLE_HOME/network/admin (Unix)
  4 %ORACLE_HOME%/Network/Admin or %ORACLE_HOME%/Net80/Admin (Windows)

I ran:
truss tnsping 'sqlplus opsdba/xxxxxxxx@pcrpi' 2>&1 | grep sqlnet.ora
access("/opt/oracle/product/10.2.A/network/admin/sqlnet.ora", F_OK)
ERR#2 ENOENT
access("/opt/oracle/product/10.2.A/network/admin/sqlnet.ora", F_OK)
ERR#2 ENOENT

I do not have an sqlnet.ora file at this location, so the error message
is correct but I do have a sqlnet.ora in /etc yet it did not find it.

ls -lai /etc/sqlnet.ora
   -rw-r--r--   1 oracle     dba           1049 Sep 10  2008
/etc/sqlnet.ora

Next test:
truss tnsping 'sqlplus opsdba/xxxxxxx@pcrpi' 2>&1 | grep tnsnames.ora
access("/home/rusnakga/.tnsnames.ora", F_OK)
ERR#2 ENOENT
access("/etc/tnsnames.ora", F_OK)
= 0
stat("/etc/tnsnames.ora", 0x800003fffb0f4de0)
= 0
open("/etc/tnsnames.ora", O_RDONLY|O_LARGEFILE, 0666)
= 3

I do not have a .tnsnames.ora in my home directory so, I can understand
that error and it continued its search.
I do not have a tnsnames.ora in $ORACLE_HOME but no indication Oracle
looked there.
I do have a tnsnames.ora in /etc and it found it.

TNS_ADMIN was not set.

So, what is the search order for sqlnet.ora and tnsnames.ora?? How can I
verify the search it goes through?

The server is: HP-UX XXXXXXXXX B.11.11 U 9000/800
      Oracle:   10.2.0.4.0


TIA,

Al Rusnak
Database Administrator
ManTech International Corporation
Fort Lee, Virginia
Phone: 804.734.8000  ex. 48210
Email: george.rusnak.ctr@xxxxxxxx


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