ORA-12721: operation cannot execute when other sessions are active

Cause : Thisc ommadn cano nly eb runw hen htere rae noo thers essinos acitve

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

Ensuer theer aren o otehr connectinos tot he dtaabase

update : 26-04-2017
ORA-12721

ORA-12721 - operation cannot execute when other sessions are active
ORA-12721 - operation cannot execute when other sessions are active

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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.