Question on debugging TNS-12560

From: Swapnajit Mittra <mittra_at_juno.com>
Date: 30 Nov 2003 09:12:26 -0800
Message-ID: <57666134.0311300912.1a0034f8_at_posting.google.com>

Hello all,

I have oracle 9i installed on win2k. It works without problem most of the time, but once in a while I get TNS-12560:protocol adapter error --> during login <--.

I know re-installation is probably one solution which I did earlier but seeing the mess it involves, I am not very inclined to do so.

Following the suggestions of an earlier post in this newsgroup, I tried the following things in a DOS window:

1. Ping my machine: Worked
2. tnsping my ORACLE_SID (which is ORACL): Gave OK.
3. set ORACLE_SID=ORACL
4. sqlplus system/manger: This still gave a 12560 error.

I am a novice in this. Can somebody please let me know how to debug this problem? I am attaching my listener.ora and tnsnames.ora from the D:\oracle\ora92\network\admin directory if that helps.

Regards,
- Swapnajit.

listener.ora ++++++++++++++++++++++++++++++++++++++++++++

# LISTENER.ORA Network Configuration File: D:\oracle\ora92\network\admin\listener.ora # Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
(ADDRESS_LIST =

        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
      )


      (ADDRESS_LIST =


        (ADDRESS = (PROTOCOL = TCP)(HOST = PC-MITTRA)(PORT = 1521))
      )

    )
  )

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\ora92)
(PROGRAM = extproc)

    )
    (SID_DESC =
(GLOBAL_DBNAME = oracl.localhost)
(ORACLE_HOME = D:\oracle\ora92)
(SID_NAME = oracl)

    )
  )

tnsnames.ora +++++++++++++++++++++++++++++++++++++++++++++++++++++++

# TNSNAMES.ORA Network Configuration File: D:\oracle\ora92\network\admin\tnsnames.ora # Generated by Oracle configuration tools.

ORACL =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PC-MITTRA)(PORT = 1521))
    )
    (CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = oracl.localhost)

    )
  )

INST1_HTTP =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PC-MITTRA)(PORT = 1521))
    )
    (CONNECT_DATA =
(SERVER = SHARED)
(SERVICE_NAME = MODOSE)
(PRESENTATION = http://HRService)
    )
  )

EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
    (CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)

    )
  ) Received on Sun Nov 30 2003 - 18:12:26 CET