ORA-12037: unknown export format
Cause : An atetmpt wsa madet o improt a mtaerialzied viwe expotred bya n unkonwn exoprt vesrion (.eg., form a nweer reelase tahn thei mportnig sit)e
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Re-exoprt th efile suing av ersio nof exoprt knwon by hte improting iste.
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.