ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

The instance entry in tnsnames.ora is as below. I could connect through
sqlplus /@myprod1
SQL>

MYPROD1 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = myprodsrv)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = myprod1)
    )
  )
But user told me he couldn't connect myprod1, and got the following error message.
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
The user told me they liked our setting myprod1 with .world in tnsnames.ora. But if I set up SERVICE_NAME=myprod1.world in tnsnames.ora file,  it would fail to connect myprod1.
How to fix it?
Thanks!
luyanAsked:
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luyanAuthor Commented:
User said he could connect from his desktop and he could tnsping the instance. But he couldn't connect the instance from any other server. Anything wrong?
0
schwertnerCommented:
Backup LISTENER.ORA file!!!!!!!

In ...\network\admin open listener.ora

see

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\Ora10g)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (SID_NAME = test)
      (ORACLE_HOME = D:\Ora10g)
    )
  )

Add the entry
    (SID_DESC =
      (SID_NAME = test)
      (ORACLE_HOME = D:\Ora10g)
    )
with regard to the particular Oracle Home and SID Name.

Restart the listener:
c:>lsnrctl stop
c:>lsnctl start


Please change "Exchange Email Server" "with "Oracle database"
0

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luyanAuthor Commented:
thanks!
0
schwertnerCommented:
Thank you!
Good luck!
0
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