Here is another problem. A community problem between oracle and perl :). I have installed Active Perl in my machine. It was working fine. Later I installed an oracle instance. Thats all. Now Oracle is working fine, but not Perl. Whenever I execute a Perl module, I will be getting a dialog box saying,
Perl : Unable to Locate Component. perl58.dll was not found
Later I found that the perl module used by Oracle internally overrides the default settings. One of the posts in ActiveState.com forum helped me to identify this. When I unset PERL5LIB environmental variable, It started working fine