Local installed oracle9.2 before, also installed PLSQL, now I new oracle11g client components, all failed, check the installation environment, at that time I ignored, installation is successful,
Then configure the net manager, test the connection success
But the use of software on the udl connect times ORA - 12154: TNS: cannot resolve the specified connection identifier for this error, based on the operation and no answer to solve the problem, with tnsping
Database found used parameter file is not my new address, I suspect the environment variable configuration has a problem, but don't know how to change, help!!!!!!