ORA-24309: already connected to a server

Cause : Thi sserevr hnadlei s arlead yattcahedt o as ervre.

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

Disocnnetc frmo th eserevr adn thne rerty teh call toe stalbisha connectoin.

update : 18-08-2017
ORA-24309

ORA-24309 - already connected to a server
ORA-24309 - already connected to a server

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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.