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

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How do you resolve error 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 I resolve TNS issue?

Below is a list of things that you can try to resolve this issue.

  1. Verify that the tnsnames.
  2. Check the sqlnet.ora file under ‘Admin’ folder in Oracle home [Dir:\app\product\11.1.0\client_1\network\admin] and ensure that we have TNSNames in NAMES.DIRECTORY_PATH.

What is TNS error?

Troubleshooting the TNS-12154 Error The TNS-12154 error is encountered when SQL*Net cannot find the alias specified for a connection in the TNSNAMES. ORA file or other naming adapter. Before attempting to resolve the problem, it may be helpful to have a print out or view of both the TNSNAMES. ORA file and the SQLNET.

Where is Tnsnames Ora located?

ORACLE_HOME/network/admin directory
By default, the tnsnames. ora file is located in the ORACLE_HOME/network/admin directory.

How do I fix ORA 12547 TNS lost contact when trying to connect to Oracle?

Solution

  1. Ensure the DB is up and running and you can connect locally AS SYSDBA to the database using Oracle binaries owner (usually oracle:oinstall Unix / Linux user). If it does not work, probably you encounter a different problem.
  2. Check privileges of an Oracle file on Unix / Linux host where database is running:

How do I fix the TNS protocol adapter error in Oracle 12c?

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.

How do I fix the TNS protocol adapter error in Oracle 11g?

How to Fix ORA-12560: TNS: Protocol Adapter Error

  1. Make sure the windows service is up and running.
  2. Make sure your ORACLE_SID is set to the instance name you’re trying to connect to. If either one or two are not correct you will get the error as seen below.

Where is Tnsnames Ora in Windows 10?

tnsnames. ora is located in the ORACLE_HOME\network\admin directory on Windows. Oracle home path is usually C:\app\oracle_account\product\12.1. 0\dbhome_1 in windows.

Where Tnsnames Ora is located?

ORACLE_HOME\network\admin directory
tnsnames. ora is located in the ORACLE_HOME\network\admin directory on Windows.

How do you run relink all in Oracle?

Relinking Oracle Database Client Binaries After Installation

  1. Login as the Oracle Database Client owner user ( oracle ).
  2. Set the ORACLE_HOME environment variable.
  3. Go to the $ORACLE_HOME/bin directory:
  4. Run the relink script with the as_installed option to relink the binaries.

What does Tnsnames stand for?

TNS

Acronym Definition
TNS Transcutaneous Nerve Stimulation
TNS Telecommunications and Network Services (various universities)
TNS Total Network Solutions
TNS Trauma Nurse Specialist

How can I set the path of Tnsnames Ora?

Answer

  1. On the desktop Right-click on My Computer and select Properties > Advanced tab.
  2. Click the Environment Variables button.
  3. In the System variables section click the New button.
  4. Enter a variable name of TNS_ADMIN then enter a variable value of the path to the TNSNAMES.
  5. Click OK.

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