ORA-28150: proxy not authorized to connect as client

Cause : A proxy user attempted to connect as a client, but the proxy was not authorized to act on behalf of the client.

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

Grant the proxy user permission to perform actions on behalf of the client by using the ALTER USER ... GRANT CONNECT command.

update : 17-08-2017
ORA-28150

ORA-28150 - proxy not authorized to connect as client
ORA-28150 - proxy not authorized to connect as client

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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.