解决 ORA-65096: invalid common user or role name问题

在oracle执行:create user tff identified by tff 的
时候报错了:ORA-65096: invalid common user or role name

SQL> create user tff identified by tff;
create user tff identified by tff
ERROR at line 1:
ORA-65096: invalid common user or role name

报错：ORA-65096: invalid common user or role name(公用用户名或角色名无效).

错误缘由：用户想在PDBORCL中建立tff用户，却未设置会话container到PDB，而在CDB中建立公有用户因没法经过名称或角色验证出错.

解决方法:
一、查看Oracle 12c的版本

SQL> select * from v$version;
select sys_context ('USERENV', 'CON_NAME') from dual;

二、咱们能够经过ALTER SESSION SET CONTAINER 指定其余容器

SQL> alter pluggable database PDB19 open;

四、查看容器

SQL>select con_id,dbid,NAME,OPEN_MODE from v$pdbs;

五、切换容器到PDB19

六、查看当前使用容器

SQL>select sys_context ('USERENV', 'CON_NAME') from dual;

七、建立用户

create user tff identified by tff;
grant dba to tff

以上问题就能够解决了.