ORA-16236: Logical Standby metadata operation in progress
Cause : The requested operation failed because a Logical Standby metadata operation, such as DBMS_LOGSTDBY.SET_TABLESPACE or DBMS_LOGSTDBY.INSTANTIATE_TABLE, has not finished.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Wait for the Logical Standby metadata operation to finish, then re-enter or respecify the operation.
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.