Problem:
ORA-12162 errors on application (.exe) startup ONLY when .exe file was launched from certain directories, NOT from others
Client Platform: NT4 (SP6)
Server: Oracle 8.1.5
Repeatable: Yes
Commonality:
Error occurred when full path of .exe contained closed-paren character ")".
Example...
We solved our ORA-12162 errors when we discovered that they only occurred on programs whose full path contained ( or ) characters- that is, open-paren or closed-paren characters. When we renamed those directories, the problem was solved.
Hope this helps-
Charlie Wilson