ORA-24815: Invalid character set form
Cause : An invalid character set form was passed into an OCI LOB function. For example, the only valid cs form for OCILobCreateTemporary() is OCI_DEFAULT(0), SQLCS_IMPLICIT(1) or SQLCS_NCHAR(2).
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Specify a valid character set form.
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.