 Error ORA-12154 [message #126912] |
Thu, 07 July 2005 06:02  |
mzakharia
Messages: 1
Registered: July 2005
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Junior Member |
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Hello,
I have been getting this message "Error while trying to retrieve text for error ORA-12154 " often while working on my application. Developed under MS Visual C#.Net.
I do nothing to the code, just hit the refresh button or the back button and try accessing the same page again, and in most of the time the pages loads well. Few times i would have to quit the C#.Net application and restart it for it to work again.
It is becoming annoying and when I install it at a client site, I would not be able to justify such an error.
What can I do to get rid of it? Is it an Oracle tuning thing, or is it something else I need to check??
Thanks in advance for any help on this subject.
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| Re: Error ORA-12154 [message #126944 is a reply to message #126912] |
Thu, 07 July 2005 08:14  |
smartin
Messages: 1803
Registered: March 2005
Location: Jacksonville, Florida
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Senior Member |
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Have you looked into the docs:
| Quote: |
ORA-12154: TNS:could not resolve the connect identifier specified
Cause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured. For example, if the type of connect identifier used was a net service name then the net service name could not be found in a naming method repository, or the repository could not be located or reached.
Action:
- If you are using local naming (TNSNAMES.ORA file):
- Make sure that "TNSNAMES" is listed as one of the values of the NAMES.DIRECTORY_PATH parameter in the Oracle Net profile (SQLNET.ORA)
- Verify that a TNSNAMES.ORA file exists and is in the proper directory and is accessible.
- Check that the net service name used as the connect identifier exists in the TNSNAMES.ORA file.
- Make sure there are no syntax errors anywhere in the TNSNAMES.ORA file. Look for unmatched parentheses or stray characters. Errors in a TNSNAMES.ORA file may make it unusable.
- If you are using directory naming:
- Verify that "LDAP" is listed as one of the values of the NAMES.DIRETORY_PATH parameter in the Oracle Net profile (SQLNET.ORA).
- Verify that the LDAP directory server is up and that it is accessible.
- Verify that the net service name or database name used as the connect identifier is configured in the directory.
- Verify that the default context being used is correct by specifying a fully qualified net service name or a full LDAP DN as the connect identifier
- If you are using easy connect naming:
- Verify that "EZCONNECT" is listed as one of the values of the NAMES.DIRETORY_PATH parameter in the Oracle Net profile (SQLNET.ORA).
- Make sure the host, port and service name specified are correct.
- Try enclosing the connect identifier in quote marks. See the Oracle Net Services Administrators Guide or the Oracle operating system specific guide for more information on naming.
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