In OS commands in Oracle using Kernel32.dll I explained a way to link the kernel32.dll library to execute host commands.
But what if you had to migrate to the latest 12c version (64 bits) and you don’t want to rebuild your application to use the new features at the same time.
Well, it seems that it is still working the way I explained, but with one addition:
In %ORACLE_HOME%\hs\admin\extproc.ora set EXTPROC_DLLS to ANY (or any value that is appropriate for you).
Without it you will get an ORA-28595: Extproc agent : Invalid DLL Path