How do you resolve ORA 12154?

Posted on by Muna Meyer

How do you resolve ORA 12154?

The option(s) to resolve this Oracle error are:

  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.
  3. Option #3. Make sure that there are no syntax errors in the TNSNAMES.

How do I connect to Sqlplus on Windows?

To connect to Oracle Database from SQL*Plus:

  1. If you are on a Windows system, display a Windows command prompt.
  2. At the command prompt, type sqlplus and press the key Enter. SQL*Plus starts and prompts you for your user name.
  3. Type your user name and press the key Enter.
  4. Type your password and press the key Enter.

What is ORA 12154 TNS could not resolve the connect identifier specified?

This is one of the most common Oracle errors and it is basically telling you that you are trying to connect to a database name that is unknown to the system. The most common cause are typos in your connection string or network configuration files.

What is the error ORA 12154?

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.

How do I install Sqlplus on Windows 10?

Installing SQLPlus on Windows:

  1. Step 1: First browse to this link.
  2. Step 2: Then we have to click on the download button on the right side.
  3. Step 3: Then on the next page you will find the Start Download button.
  4. Step 4: Then in the downloaded zip file there will be a setup.exe file.

How do I get rid of TNS protocol adapter error?

Set the Oracle system ID (SID) to C:>set oracle_sid=ORCL. Next, run the Net Start command (C:>net start oracleserviceORCL). This should resolve the ORA-12560 error in this situation.