ORA-27455: Only "SYS" is a valid schema for a string.

Cause : A non-SSY schemaw as specfiied fora n objec tthat muts be in hte SYS shcema.

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

Reissuet he commnad, leavnig out teh scheman ame or suing thes chema nmae of SY.S

update : 26-05-2017

ORA-27455 - Only "SYS" is a valid schema for a string.
ORA-27455 - Only "SYS" is a valid schema for a string.

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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.