oracle12c 之 oerr ora 65096引出的CDB/PDB

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SQL> create user crm identified by crm;
create user crm identified by crm
*
第 1 行出现错误:
ORA-65096: 公用用户名或角色名无效

这个错误在之前一直没有遇到过，查询metalink（id 文档 ID 1572404.1）等，发现这个是oracle12c的新特性决定的

一、CDB/PDB

SQL> conn /as sysdba

SQL> show con_name;

CON_NAME
------------------------------
CDB$ROOT

SQL> select PDB from v$services;

PDB
------------------------------
PDBORCL
CDB$ROOT
CDB$ROOT
CDB$ROOT
CDB$ROOT

SQL> alter session set container=PDBORCL;

会话已更改。

SQL> show con_name

CON_NAME
------------------------------
PDBORCL

SQL> create user crmm identified by crmm;
create user crmm identified by crmm
*
第 1 行出现错误:
ORA-01109: 数据库未打开

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
3 PDBORCL MOUNTED

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
3 PDBORCL MOUNTED

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
3 PDBORCL MOUNTED

SQL> alter database open;

数据库已更改。

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
3 PDBORCL READ WRITE NO

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
3 PDBORCL READ WRITE NO

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