Oracle12CPDB维护基础介绍

先说基本用法： 先按11G之前进行 conn / as sysdba; create user test identifed by test; ORA-65096: 公用用户名或角色名无效.

先说基本用法：

先按11G之前进行

conn / as sysdba;

create user test identifed by test;

ORA-65096: 公用用户名或角色名无效.

查官方文档得知“试图创建一个通用用户，必需要用C##或者c##开头”，，这时候心里会有疑问，什么是common user？不管先建成功了再说

create C##user test identifed by test;

创建成功

SQL>show con_name;

CON_NAME

------------------------------

CDB$ROOT

selectcon_id,dbid,NAME,OPEN_MODEfromv$pdbs;

CON_ID DBID NAME OPEN_MODE
---------- ---------- ------------------------------ ----------
2 4066409480 PDB$SEED READ ONLY
3 2270995695 PDBORCL MOUNTED

SQL>alter session set container=PDBORCL;

这时再用create user test identifed by test;建立用户就可以了。

CDB和PDB是Oracle 12C一个很亮的新特性,由于他们的引入导致传统的ORACLE数据库管理理念不少发生了改变,这里列举了部分最基本的cdb和pdb管理方式
cdb和pdb关系图

ORACLE 12C版本

SQL>
select

* from

v$version; BANNER
CON_ID--------------------------------------------------------------------------------
----------Oracle
Database

12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production 0PL/SQL
Release 12.1.0.1.0 - Production 0CORE
12.1.0.1.0 Production 0TNS
for

Linux: Version 12.1.0.1.0 - Production 0NLSRTL
Version 12.1.0.1.0 - Production 0

启动关闭pdb

SQL>
startupORACLE
instance started. Total
System Global

Area 597098496 bytesFixed
Size

2291072 bytesVariable
Size

272632448 bytesDatabase

Buffers 314572800 bytesRedo
Buffers 7602176 bytesDatabase

mounted.Database

opened.SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs; CON_ID
DBID NAME

OPEN_MODE----------
---------- ------------------------------ ---------- 2
4048821679 PDB$SEED READ

ONLY 3
3313918585 PDB1 MOUNTED 4
3872456618 PDB2 MOUNTED SQL>
alter

PLUGGABLE database

pdb1 open; Pluggable
database

altered. SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs; CON_ID
DBID NAME

OPEN_MODE----------
---------- ------------------------------ ---------- 2
4048821679 PDB$SEED READ

ONLY 3
3313918585 PDB1 READ

WRITE 4
3872456618 PDB2 MOUNTED SQL>
alter

PLUGGABLE database

pdb1 close; Pluggable
database

altered. SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs; CON_ID
DBID NAME