ORA-22818: subquery expressions not allowed here

Cause : An attempt was made to use a subquery expression where these are not supported.

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

Rewrite the statement without the subquery expression.

update : 17-08-2017

ORA-22818 - subquery expressions not allowed here
ORA-22818 - subquery expressions not allowed here

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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.