ORA-12154: TNS:could not resolve service name
Cause: The service name specified is not defined correctly in the
Action: Make the following checks and correct the error:
- Verify that a TNSNAMES.ORA file exists and is in the proper place and
accessible. See the operating system specific manual for details on the
required name and location.
- Check to see that the service name exists in one of the TNSNAMES.ORA files
and add it if necessary.
- Make sure there are no syntax errors anywhere in the file. Particularly
look for unmatched parentheses or stray characters. Any error in a
TNSNAMES.ORA file makes it unusable. See Chapter 4 in the SQL*Net V2
Administrator's Guide. If possible, regenerate the configuration files using
the Oracle Network Manager.
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