在cdb下创建用户默认是container=all，不能设置container=current
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在pdb下创建用户默认是container=current,不能设置container=all
1.在pdb下用container参数创建用户：
SQL> show con_name
CON_NAME
------------------------------
TEST
SQL> create user scott identified by tiger container=all;
create user scott identified by tiger container=all
*
ERROR at line 1:
ORA-65050: Common DDLs only allowed in CDB$ROOT
SQL> create user scott identified by user container=current;
User created.
SQL> show con_name
CON_NAME
------------------------------
TEST
2.在cdb用户下创建参数
SQL> show con_name
CON_NAME
------------------------------
CDB$ROOT
SQL> create user d identified by d;
create user d identified by d
*
ERROR at line 1:
ORA-65096: invalid common user or role name
SQL> create user c##d identified by d container=current;
create user c##d identified by d container=current
*
ERROR at line 1:
ORA-65094: invalid local user or role name
SQL> create user c##d identified by d container=all;
User created.
SQL> show con_name
CON_NAME
------------------------------
CDB$ROOT