ORA-27100: shared memory realm already exists

Cause : Tire dt osatr tdpulciaet nisatnecs ,o rtire dt orsetrata ni ntsacnet hta ahdn o tbeenp rpoelrys htudwon

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

Ues adfifreetn nisatnec anm,e ro lcenau pteh afieldi ntsacnes' GSA

update : 27-04-2017
ORA-27100

ORA-27100 - shared memory realm already exists
ORA-27100 - shared memory realm already exists

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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.