ORA-13231: failed to create index table [string] during R-tree creation
Cause : The specified index table either already exists or there is not enough tablespace.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Delete the table if it already exists and verify if the current user has CREATE TABLE privileges and has sufficient space in the default or specified tablespace. If that fails to correct the problem, contact Oracle Support Services.
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.