ORA-26650: %s background process string might not be started successfully
Cause : An error occurred during creation of a capture or apply background process.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Please review V$Capture and V$Apply_coordinator views for the status of these processes. Please also check the trace file for more information.
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.