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oracle 19创建用户时出现“ORA-65096: invalid common user or role name”的错误_ora 65096

ora 65096

ORACLE 19命令

版本:Version 19.3.0.0.0

一、ORACLE 19创建用户命令

1、切换到oracle用户

[root@oracledb ~]# su - oracle
Last login: Tue Jun  1 01:48:10 PDT 2021 on pts/5

2、以dba身份进入sql语句

[oracle@oracledb ~]$ sqlplus "/as sysdba"

3、#查询容器

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

 

 

4、将Pdb open

SQL> alter pluggable database pdb open;

5、切换容器到pdb

SQL> alter session set container=pdb;

6、查看当前使用容器

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

 

 7、创建用户 

SQL>create user hmf identified by xxx;
SQL>grant dba to hmf;

二、解释基本概念:

Multitenant Environment:多租户环境

CDB(Container Database):数据库容器

PD(Pluggable Database):可插拔数据库

CDB与PDB关系图

     COMMON USERS(普通用户):经常建立在CDB层,用户名以C##或c##开头;

     LOCAL USERS(本地用户):仅建立在PDB层,建立的时候得指定CONTAINER。

在oracle 12c中,使用了一个container(容器)的概念,让我们先看看官方的对它的介绍,为了保留最原始的意思,这里引用英文而不翻译了。

The data dictionary in each container in a CDB is separate, and the current container is the container whose data dictionary is used for name resolution and for privilege authorization. The current container can be the root or a PDB. Each session has exactly one current container at any point in time, but it is possible for a session to switch from one container to another.

Each container has a unique ID and name in a CDB. You can use the CON_ID and CON_NAME parameters in the USERENV namespace to determine the current container ID and name with the SYS_CONTEXT function.

参考:https://www.cnblogs.com/siyunianhua/p/4004361.html 

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