ORA-09955: scgcan: unexpected return status when canceling a lock
Cause : DLM system service x returned an unexpected value
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Check for system error message and refer to DLM documentation refer to the distributed lock manager documentation or contact your customer support representative.
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.