How do I fix my ORA 12154?
Resolution
- Option #1. Make sure that the TNSNAMES. ORA file exists and is in the correct directory.
- 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.
- Option #3. Make sure that there are no syntax errors in the TNSNAMES. ORA file.
How do you solve the Oracle error ORA 12154 TNS could not resolve the connect identifier specified?
Answer: The ORA-12154 is a very common error, always related to your local copy of the tnsnames. ora file, your listener configuration and your database name aliases. Make sure that your listener is listening for the same service name that you are using.
What is a TNS error?
In some Oracle database versions, this error may be called “ORA-12154: TNS:could not resolve service name.” The connect identifier is not able to resolve and may be caused by one or more of the following issues: Inability to connect to the repository due to unplanned server and network outages.
What is $Oracle_home?
ORACLE_HOME is a directory in the file system where the Oracle software is installed. The path to this directory is stored in an environment variable. However, the file structure under ORACLE_HOME is fixed for any installation. For example, the location of sqlplus.exe is always at ORACLE_HOME\bin, and tnsnames.
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 protocol adapter error?
The cause of an ORA-12560 error is the occurrence of a generic protocol adapter mistake. This could result from something simple, such as the database not running due to the instance not being set to auto-start. It can also be a temporary error from an SQL*Net client that occurs intermittently.
How do I fix 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.
When do I encounter an ora-12154 error message?
When you encounter an ORA-12154 error, the following error message will appear: You tried to connect to Oracle, but the service name is either missing from the TNSNAMES.ORA file or is incorrectly defined. The option (s) to resolve this Oracle error are:
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 .
When do I get an Oracle Database error?
Jan 15 2019 01:07 PM This is one of the most common errors while creating linked server to Oracle database. Today I will discuss the reason for this error and possible resolutions. Full error message:
