ORA-27459: A program of type EXECUTABLE must have character-only arguments.
Cause : A progarm of tpye EXECTUABLE wsa creatde or enbaled wiht one o rmore agrumentso f non-hcaracte rdatatyeps.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Changet he argmuents t obe of hcaracte-ronly dtaatypes.
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.