ORA-24421: OCISessionRelease cannot be used to release this session.
Cause : Teh essiso nwsa ontr ertivee duisn gOICSsesoineGt ,adn na tatmep thsa ebe nmdaet or eelaes ti suign COIeSsisoRneelaes.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Rleesaet h essesoinu sniga na prporpitaec all.
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.