Oracle-PDB拔插

適用場景

• 軟件升級

步驟

源端unplug pdb（連接到CDB$ROOT）

關閉PDB

alter pluggable database PDB1 close immediate;

alter pluggable database PDB1 close immediate instances=all;

將PDB元數據信息保存到xml文件

alter pluggable database PDB1 unplug into '/tmp/PDB1.xml';

XML文件中包含了每個數據文件的位置，以及初始化參數等信息

刪除PDB並保留數據文件

drop pluggable database PDB1 keep datafiles;

目標端創建pdb（連接到CDB$ROOT）

檢查驗證當前CDB環境是否滿足條件

set serveroutput on
DECLARE
  compatible BOOLEAN := FALSE;
BEGIN
  compatible := DBMS_PDB.CHECK_PLUG_COMPATIBILITY(
  pdb_descr_file => '/tmp/PDB1.xml');
  if compatible then
    DBMS_OUTPUT.PUT_LINE('Is pluggable database compatible? YES');
  else 
    DBMS_OUTPUT.PUT_LINE('Is pluggable database compatible? NO');
  end if;
END;
/

使用xml文件創建PDB

create pluggable database PDB1 using '/tmp/PDB1.xml' NOCOPY;

打開PDB

alter pluggable database PDB1 open;

alter pluggable database PDB1 open instances=all;