ORA-28595: Extproc agent : Invalid DLL Path
Cause : The path of DLL supplied for the extproc execution is invalid.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Check if the DLL path is set properly using the EXTPROC_DLLS environment variable. errors 28600 - 28620 are reserved for bitmap indexes
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.