How do you fix error ORA-12154 TNS could not resolve the connect identifier specified?
- Make sure that “TNSNAMES” is listed as one of the values of the NAMES. DIRECTORY_PATH parameter in the Oracle Net profile (SQLNET.
- Verify that a TNSNAMES.
- Check that the net service name used as the connect identifier exists in the TNSNAMES.
- Make sure there are no syntax errors anywhere in the TNSNAMES.
What is the error ORA-12154?
When the complete ORA-12154 error appears with the text line, your program has found a working Oracle client install. However, the specified Oracle service is not listed in tnsnames. This file and tnsnames can usually both be found in the Oracle install directory (“ORACLE_HOME”), under network/admin/.
Can’t identify the connect identifier specified?
“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. If the SQL server is 64 bit then we need to install 64 bit Oracle provider.
What is TNS service name for Oracle in ODBC?
To configure an Oracle Data Source Name (DSN), you must have specified a TNS Service Name for the database in which your workspace repositories will be stored. This is the TNS Service Name you entered when you installed the repository client. Double-click Data Sources (ODBC). …
Does JDBC use Tnsnames Ora?
When using TNSNames with the JDBC Thin driver, you must set the oracle. net. tns_admin property to the directory that contains your tnsnames. ora file.
What is Tns_admin environment variable?
The TNS_ADMIN environment variable is used to specify the directory location for the tnsnames.ora file.
What is $Oracle_home?
ORACLE_HOME is a directory name which will come at the time of Oracle software installation. The specified directory path of ORACLE_HOME directory is been stored in an environment variable. The path of the ORACLE_HOME directory is stored the installation path of oracle.
What is Tnsnames?
The tnsnames. ora file is a configuration file that contains network service names mapped to connect descriptors for the local naming method, or net service names mapped to listener protocol addresses. ora file is located in the ORACLE_HOME/network/admin directory.
How do I configure ODBC?
Add an ODBC data source
- Click Start, and then click Control Panel.
- In the Control Panel, double-click Administrative Tools.
- In the Administrative Tools dialog box, double-click Data Sources (ODBC).
- Click User DSN, System DSN, or File DSN, depending on the type of data source you want to add.
- Click Add.
How do I find my ODBC driver name?
To check the ODBC SQL Server driver version (32-bit ODBC): In Administative Tools, double-click Data Sources (ODBC). Click the Drivers tab. Information for the Microsoft SQL Server entry is displayed in the Version column.
What command is used to check the listener status on Oracle?
Before starting, stopping or restarting make sure to execute lsnrctl status command to check the oracle listener status as shown below. Apart from letting us know whether the listener is up or down, you can also find the following valuable information from the lsnrctl status command output.