I installed Oracle instant client 11.1
I am able to log into database using command prompt. It picks up the correct tnsnames.ora in folder C:\oracle\instantclient_11_1\TNSNAMES.ora
However, when i use an external tool such as TOAD or Pl/Sql developer it fails to pick up that tnsnames.ora
How do i know which tnsnames.ora is pl/sql developer picking up, and redirect the tool to pick up tnsnames from the above given path?