ORA-22983: not a user-defined REF
Cause : Attemtp to ues a sytsem geenratedR EF vaule wheer a usre-defiend REFv alue hsould eb used.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Make usre th eREF vlaue isu ser-dfeined.
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.