What is the error ORA 12154?

What is the error ORA 12154?

“ORA-12154: TNS: could not resolve the connect identifier specified” error while creating a linked server to Oracle. This is one of the most common errors while creating linked server to Oracle database. Also make sure you have installed Oracle Client on the SQL server.

How do you fix ORA 12154 TNS could not resolve the connect identifier specified?

The Solution

1. Make sure that “TNSNAMES” is listed as one of the values of the NAMES. DIRECTORY_PATH parameter in the Oracle Net profile (SQLNET.
2. Verify that a TNSNAMES.
3. Check that the net service name used as the connect identifier exists in the TNSNAMES.
4. Make sure there are no syntax errors anywhere in the TNSNAMES.

How do you resolve ORA 12154?

Resolution

1. Option #1. Make sure that the TNSNAMES. ORA file exists and is in the correct directory.
2. Option #2. Make sure that the service name that you are connecting to is included in the TNSNAMES. ORA file and that it is correctly defined.
3. Option #3. Make sure that there are no syntax errors in the TNSNAMES. ORA file.

Can’t find the connect identifier specified?

The “ORA-12154: TNS:could not resolve the connect identifier specified” Oracle error is a commonly seen message for database administrators. ora from the wrong ORACLE_HOME. The program is not using a fully qualified service name, but no default domain is enabled in sqlnet. ora.

Why does SQL Plus give an ora-12154?

TNSPING OK but sqlplus gives ORA-12154? I have Oracle 11 running on a Windows server and I’m logged onto the same server trying to use SQL Plus. When I try to connect I get a ORA-12154 even though TNSPING and various other diagnostics look OK. Can anyone suggest why ? Loads of detail below. I can use sqlplus if I use EZCONNECT like this ..

How to fix ora-12154 : TNS error?

Enter user-name: user001 Enter password: ERROR: ORA-12154: TNS:could not resolve the connect identifier specified Enter user-name: Why does the error “ORA-12154: TNS:could not resolve the connect identifier specified” exist? How should I fix it for connecting the database?

What to do if Oracle could not resolve the connect identifier specified?

I have specified some ways to resolve the error ‘ORA-12154: TNS:could not resolve the connect identifier specified’ which is frequent error on Oracle. Hope you like this article.If you like this article don’t forget to share it.

What is the most common Oracle connect error?

While working with different functionalities ; the oracle developers are facing different types of errors.The most common error coming while connecting database is ORA-12154: TNS:could not resolve the connect identifier specified .