oracle 12c 创建、开关、删除

pdb测试：创建、开关、删除

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ORACLE12C中提出来CDB和PDB的概念
他们可以分别理解为容器和插件(PDB插入在CDB中)
CDB的管理和传统数据库区别不大

--确认当前cdb
SQL> select name,cdb from v$database;

NAME      CDB
--------- ---
ZARADB    YES

--查询当前pdb基本信息
col pdb_name for a30
select pdb_id,pdb_name,dbid,status,creation_scn from dba_pdbs;
select con_id,dbid,NAME,OPEN_MODE from v$pdbs;

    PDB_ID PDB_NAME                             DBID STATUS        CREATION_SCN
---------- ------------------------------ ---------- ------------- ------------
         3 PDB1                           3337485269 NORMAL             1909544
         2 PDB$SEED                       4072348290 NORMAL             1720741

SQL> 
    CON_ID       DBID NAME                           OPEN_MODE
---------- ---------- ------------------------------ ----------
         2 4072348290 PDB$SEED                       READ ONLY
         3 3337485269 PDB1                           READ WRITE

--创建pdb
--1直接创建
CREATE PLUGGABLE DATABASE pdb2
ADMIN USER pdb2dba IDENTIFIED BY anbaisheng
STORAGE (MAXSIZE 2G MAX_SHARED_TEMP_SIZE 100M)
DEFAULT TABLESPACE tbs_pdb2 DATAFILE '/opt/oracle/oradata/ZARADB/datafile/pdb2_001.dbf' SIZE 25M AUTOEXTEND ON;

--2以现有pdb为模板创建
--现有pdb必须在read only模式下才能被创建，否则报错
--以pdb1为模板创建pdb2

drop pluggable database pdb2 including datafiles;
alter pluggable database pdb1 close;
alter pluggable database pdb1 open read only;

create pluggable database pdb2 
from pdb1 
file_name_convert =('/opt/oracle/oradata/ZARADB/E98BEB85B1A80C56E0439A02A8C05841/datafile/','/opt/oracle/oradata/ZARADB/datafile/pdb2');

--打开关闭pdb
alter pluggable database pdb2 close;
alter pluggable database all close;
alter pluggable database pdb2 close immediate;

alter pluggable database pdb2 open;
alter pluggable database all open;

--删除pdb
--与删除表空间类似，可以级联删除数据文件
drop pluggable database pdb2;
drop pluggable database pdb2 including datafiles;

--unplug
--unplug后pdb只能mount不能open
alter pluggable database pdb2 unplug into '/tmp/pdb2.xml';

--unplug后删除pdb，再使用xml文件加回pdb
drop pluggable database pdb2;
create pluggable database pdb2 using '/tmp/pdb2.xml' nocopy;