oracle 12c pdb如何實現創建、開關、刪除

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pdb測試：創建、開關、刪除

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ORACLE12C中提出來CDB和PDB的概念
他們可以分別理解為容器和插件(PDB插入在CDB中)
CDB的管理和傳統數據庫區別不大

--確認當前cdb
SQL> select name,cdb from v$database;

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

--查詢當前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

--創建pdb
--1直接創建
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以現有pdb為模板創建
--現有pdb必須在read only模式下才能被創建，否則報錯
--以pdb1為模板創建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');

--打開關閉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;

--刪除pdb
--與刪除表空間類似，可以級聯刪除數據文件
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后刪除pdb，再使用xml文件加回pdb
drop pluggable database pdb2;
create pluggable database pdb2 using '/tmp/pdb2.xml' nocopy;

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