System and Application Softwares
ORA-12154: TNS:could not resolve the connect identifier specified
I am getting this error: "ORA-12154 could not resolve the connect identifier specified" when I I am trying access Oracle database using OracleConnection in Visual Studio.
I had 11g clients installed, I found that the following two environment variables were missing in my computer, after I added them, I can access my Oracle database.
ORACLE_HOME = C:\Ora112
TNS_ADMIN = C:\Ora112\FClient\network\admin
Also, double check the follwing environment variable is there:
PATH = C:\Ora112\FClient\bin;....
in Windows 7/8/10, open the Control Panel and go to “System and Security - > System.” There, click or tap the “Advanced system settings” link on the left. The System Properties window is opened. There click the Environment Variables button.
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