ORA-12154 TNScould not resolve the connect identifier specified
Today, I logged in to PL/SQL to connect to ORACLE 11G R2 with the following error: ORA-12154 TNScould not resolve the connect identifier specified.
My solution is: 1. Open "my computer"-- "Properties"-- "Advanced system Settings"-- "Environment variable"-- "system variable"-- PATH-- "Edit"-delete the variable value of "C:\ app\ linxi\ product\ 11.2.0\ dbhome_1\ BIN".
two。 Open PL/SQL, enter the user name, password, database name and role, and find that the login is successful!
