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Asked: 2026-05-11T15:55:04+00:00

My goal is to connect to an Oracle 9i instance from my OS X

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My goal is to connect to an Oracle 9i instance from my OS X machine. I’ve followed the setup instructions here and got through them with no errors (eventually). However, I’m finding that sqlplus is unable to connect:

[ ethan@gir ~ ]$ sqlplus xxx/yyy@zzz  SQL*Plus: Release 10.2.0.4.0 - Production on Fri Apr 17 10:13:08 2009  Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

Looooong wait…

ERROR: ORA-12170: TNS:Connect timeout occurred  Enter user-name: xxx Enter password:  ERROR: ORA-12162: TNS:net service name is incorrectly specified  Enter user-name:

My tnsnames.ora file…

zzz =   (DESCRIPTION =      (ADDRESS_LIST =       (ADDRESS =         (PROTOCOL = TCP)         (HOST = dbhost)         (PORT = 1521))     )   (CONNECT_DATA =     (SERVICE_NAME = zzz)   ) )

Maybe there’s an env variable that needs to be set?

UPDATE

Able to ping DB host machine no problem.

Tried…

sqlplus xxx/yyy@//dbhost/zzz

Got…

ERROR: ORA-12170: TNS:Connect timeout occurred

Tried using SID instead of SERVICE_NAME in tnsnames.ora. Did not seem to change the result. Reverted back to SERVICE_NAME.

Last couple entries in sqlnet.log…

*********************************************************************** Fatal NI connect error 12170.    VERSION INFORMATION:     TNS for MacOS X Server: Version 10.2.0.4.0 - Production     TCP/IP NT Protocol Adapter for MacOS X Server: Version 10.2.0.4.0 - Production   Time: 17-APR-2009 10:33:06   Tracing not turned on.   Tns error struct:     ns main err code: 12535     TNS-12535: Message 12535 not found; No message file for product=network, facility=TNS     ns secondary err code: 12560     nt main err code: 505     TNS-00505: Message 505 not found; No message file for product=network, facility=TNS     nt secondary err code: 60     nt OS err code: 0   *********************************************************************** Fatal NI connect error 12170.    VERSION INFORMATION:     TNS for MacOS X Server: Version 10.2.0.4.0 - Production     TCP/IP NT Protocol Adapter for MacOS X Server: Version 10.2.0.4.0 - Production   Time: 17-APR-2009 11:24:08   Tracing not turned on.   Tns error struct:     ns main err code: 12535     TNS-12535: Message 12535 not found; No message file for product=network, facility=TNS     ns secondary err code: 12560     nt main err code: 505     TNS-00505: Message 505 not found; No message file for product=network, facility=TNS     nt secondary err code: 60     nt OS err code: 0

PARTIAL ANSWER

Thanks everyone for your answers. They were helpful. I found that there was a DNS issue. I was able to ping by hostname, so thought that should work fine. I also tried I.P. address. Turned out that I needed the internal ‘10.1.x.x’ I.P. address for it to work on this OS X machine (but hostname is fine on Windows).

At this point, I can connect with…

sqlplus xxx/yyy@//INTERNAL_IP/zzz

However, with those values entered into tnsnames.ora, this still doesn’t work…

sqlplus xxx/yyy@zzz

…

ORA-12154: TNS:could not resolve the connect identifier specified

I searched for a sample tnsnames.ora file that was close to what I needed and copied the contents into my file. Changed the params and now everything works. Not sure why mine wasn’t working.

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1 Answer

  1. Since you are using a 10g client, it’s advisable to use Easy Connect syntax instead:

    export TWO_TASK=//dbhost/zzz sqlplus xxx/yyy

    , or just this:

    sqlplus 'xxx/yyy@//dnhost/zzz'

    Also check your ORACLE_HOME points to the right folder: tnsnames.ora is searched for in $ORACLE_HOME/network/admin/tnsnames.ora

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