Invalid common user or role name

Question

why is this showing error..

SQL> create user nisar identified by kk ;
create user nisar identified by kk
            *

ERROR at line 1:

ORA-65096: invalid common user or role name

Answer 1

I had used below command. It's very useful. So, I would like to recommend to you.

alter session set "_ORACLE_SCRIPT"=true;

For more information, see: http://www.dba-oracle.com/t_ora_65096_create_user_12c_without_c_prefix.htm