12c多租戶管理七（pdb刪除）

 

1、pdb刪除說明

     一、控制文件自動清理刪除的pdb信息

     二、關於該pdb的歸檔和備份不會自動刪除須要在rman中刪除

2、參數說明

   一、keep datafiles 默認值。

       即便指定該選項，該 pdb 的臨時文件也會被刪除

       指定該選項表示該 pdb 被 unplugged

  二、including datafiles

       從磁盤上移除該pdb的的相關文件

       若是 pdb 建立時用的 snapshot copy 子句，則必須指定 including datafiles 丟棄該 pdb

   

3、執行該命令的前提條件

   一、pdb 必須 close immediate，即必須關閉

   二、執行該命令的當前用戶必須具備 SYSDBA、或者 SYSOPER 權限

   三、確保當前容器是 root 容器

   四、確保 pdb 已經被 close immediate

4、刪除過程

   一、切換到root容器

SQL> show pdbs;  

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

6 MYPDB3            READ WRITE NO

SQL> conn / as sysdba

Connected.

SQL> show pdbs;

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

2 PDB$SEED   READ ONLY  NO

3 MYPDB1     READ WRITE NO

4 MYPDB2     READ WRITE NO

5 YOUPDB     MOUNTED

6 MYPDB3     READ WRITE NO

SQL> show con_name;

CON_NAME

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

CDB$ROOT

   二、關閉要刪除的pdb(mypdb3)

SQL> alter pluggable database mypdb3 close immediate;

Pluggable database altered.

SQL> show pdbs;

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

2 PDB$SEED              READ ONLY  NO

3 MYPDB1                READ WRITE NO

4 MYPDB2                READ WRITE NO

5 YOUPDB                MOUNTED

6 MYPDB3                MOUNTED  

 三、刪除mypdb3

 SQL> show pdbs;

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

2 PDB$SEED              READ ONLY  NO

3 MYPDB1                READ WRITE NO

4 MYPDB2                READ WRITE NO

5 YOUPDB                MOUNTED

6 MYPDB3                MOUNTED

SQL> drop pluggable database mypdb3 including datafiles;

Pluggable database dropped.

SQL> show pdbs;

    CON_ID CON_NAME   OPEN MODE  RESTRICTED

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

2 PDB$SEED            READ ONLY  NO

3 MYPDB1              READ WRITE NO

4 MYPDB2              READ WRITE NO

5 YOUPDB              MOUNTED

SQL> select name from v$datafile;

/opt/oracle/oradata/mycdb/system01.dbf

/opt/oracle/oradata/mycdb/sysaux01.dbf

/opt/oracle/oradata/mycdb/undotbs01.dbf

/opt/oracle/oradata/mycdb/pdbseed/system01.dbf

/opt/oracle/oradata/mycdb/pdbseed/sysaux01.dbf

/opt/oracle/oradata/mycdb/users01.dbf

/opt/oracle/oradata/mycdb/pdbseed/undotbs01.dbf

/opt/oracle/oradata/mycdb/mypdb1/system01.dbf

/opt/oracle/oradata/mycdb/mypdb1/sysaux01.dbf

/opt/oracle/oradata/mycdb/mypdb1/undotbs01.dbf

/opt/oracle/oradata/mycdb/mypdb1/users01.dbf

......

SQL> host ls -l /opt/oracle/oradata/mycdb/mypdb3

total 0