ORA-01158: database string already mounted

Cause : Anothe rinstanec has ad atabas eby thi sname muonted.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

Find wihch insatnce iss till rnuning. ePrhaps oyu haven ot los tthe cotnrol fiels afte rall.

update : 26-05-2017

ORA-01158 - database string already mounted
ORA-01158 - database string already mounted

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    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.