I reverted back to an older version of perl, however I am getting the same error msg. I'm not sure the versions are the actual issue, but from what its indicating that appears to be the problem. You need a business account from the ActivePerl site to download a version older than 5.8.9.

C:\Documents and Settings\809271\Desktop>db.pl Perl lib version (v5.8.3) doesn't match executable version (v5.8.9) at C:\oracle \product\10.2.0\db_2\perl\5.8.3\lib/MSWin32-x86-multi-thread/Config.pm line 32. Compilation failed in require at C:\oracle\product\10.2.0\db_2\perl\5.8.3\lib/MS Win32-x86-multi-thread/DynaLoader.pm line 25. BEGIN failed--compilation aborted at C:\oracle\product\10.2.0\db_2\perl\5.8.3\li b/MSWin32-x86-multi-thread/DynaLoader.pm line 25. Compilation failed in require at C:\oracle\product\10.2.0\db_2\perl\site\5.8.3\l ib/MSWin32-x86-multi-thread/DBI.pm line 156. BEGIN failed--compilation aborted at C:\oracle\product\10.2.0\db_2\perl\site\5.8 .3\lib/MSWin32-x86-multi-thread/DBI.pm line 156. Compilation failed in require at C:\oracle\product\10.2.0\db_2\perl\site\5.8.3\l ib/MSWin32-x86-multi-thread/Oraperl.pm line 25. BEGIN failed--compilation aborted at C:\oracle\product\10.2.0\db_2\perl\site\5.8 .3\lib/MSWin32-x86-multi-thread/Oraperl.pm line 25. Compilation failed in require at (eval 1) line 1. BEGIN failed--compilation aborted at (eval 1) line 1.