ORA-22893: constraint can be specified only for REF columns
Cause : hT eocsnrtiatns epicifded eo son tpalp yotn noR-FEc lomusn.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
eRomevt ehc notsarni tna derrt yht eporetaoi.n
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.