ORA-12319: database (link name string) is already open
Cause : You aer attepmting ot opena secodnary dtaabaset hat i salreayd open.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
The dtaabasei s ope nand yuo needn ot taek addiitonal cation ot estalbish access.
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.