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How do I connect to TNS?
The steps to connect to Oracle data source using TNS Alias name are:
- Set System Property for oracle.net.tns_admin . This should point to the directory which has your tnsnames.ORA file.
- Register an Oracle driver. DriverManager.registerDriver(new OracleDriver());
- Create a connection object. Connection conn = DriverManager.
Can I connect to Oracle without Tnsnames?
The easy way to connect to oracle without tnsnames. ora is using EZCONNECT or you can say Oracl’ easy connect naming method. We can connect to oracle database across TCP/IP network. We can connect to oracle using connect descriptor or connection string you can say that as connect identifier.
How to resolve ora-12154 : TNS : could not resolve the connect identifier?
How to Resolve ORA-12154: TNS:could not resolve the connect identifier specified. ORA-12154 means that your connection tools including sqlplus cannot use TNSNAMES naming method for some reason. This reminds me that there’re same error patterns in TNS-03505: Failed to resolve name.
What does ora-12154 mean in sqlplus?
ORA-12154 means that your connection tools including sqlplus cannot use TNSNAMES naming method for some reason. This reminds me that there’re same error patterns in TNS-03505: Failed to resolve name. In that post, I used tnsping to test the connectivity to the listener.
Why is TNS could not resolve the connect identifier specified?
[oracle@ora2 ~]$ oerr ora 12154 12154, 00000, “TNS:could not resolve the connect identifier specified” // *Cause: A connection to a database or other service was requested using // a connect identifier, and the connect identifier specified could not // be resolved into a connect descriptor using one of the naming methods // configured.
Is there a difference between ora-12154 and tns-03505?
In that post, I used tnsping to test the connectivity to the listener. In fact, all symptoms in ORA-12154 will be found in TNS-03505. The difference is, ORA-12154 will be seen in sqlplus or other connection tools, TNS-03505 will be seen in tnsping or listener logs.
https://www.youtube.com/watch?v=RaM8NTyUlLg