Unplugging一个PDB Unplugging一个pdb不等于remove一个pdb Unplugging一个pdb会创建一个对应的xml文件，借助该xml文件可以将其添加到其他的cdb pdb被Unplugging后，还会在v$containers中显示，只是状态为mounted 创建一个目录，用来放Unplugging pdb时创建对应的xml文件 $mkdir -p /u12/app/oracle/unplug/unplugdb $ sqlplus '/as sysdba' SQL*Plus: Release 12.1.0.1.0 Production on Tue Jun 23 14:19:54 2015 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options SQL> show con_name; CON_NAME ------------------------------ CDB$ROOT SQL> select con_id,name,open_mode,restricted from v$pdbs order by 1; CON_ID NAME OPEN_MODE RES ---------- ------------------------------ ---------- --- 2 PDB$SEED READ ONLY NO 3 YB READ ONLY NO 4 YB1 MOUNTED 5 CLONEDB READ WRITE NO SQL> alter session set container=clonedb; Session altered. SQL> shutdown immediate; Pluggable Database closed. SQL> conn /as sysdba Connected. SQL> show con_name; CON_NAME ------------------------------ CDB$ROOT SQL> select con_id,name,open_mode,restricted from v$pdbs order by 1; CON_ID NAME OPEN_MODE RES ---------- ------------------------------ ---------- --- 2 PDB$SEED READ ONLY NO 3 YB READ ONLY NO 4 YB1 MOUNTED 5 CLONEDB MOUNTED SQL> alter pluggable database clonedb unplug into '/u12/app/oracle/unplug/unplugdb/unplugdb.xml'; Pluggable database altered. SQL> select con_id,name,open_mode,restricted from v$pdbs order by 1; CON_ID NAME OPEN_MODE RES ---------- ------------------------------ ---------- --- 2 PDB$SEED READ ONLY NO 3 YB READ ONLY NO 4 YB1 MOUNTED 5 CLONEDB MOUNTED SQL> select name,open_mode,total_size from v$pdbs; NAME OPEN_MODE TOTAL_SIZE ------------------------------ ---------- ---------- PDB$SEED READ ONLY 283115520 YB READ ONLY 393216000 YB1 MOUNTED 0 CLONEDB MOUNTED 0 SQL> select pdb_name,status from dba_pdbs; PDB_NAME STATUS -------------------------------------------------- ------------- YB NORMAL PDB$SEED NORMAL YB1 NORMAL CLONEDB UNPLUGGED 如果想重用该pdb，需要先将该pdb删除，再重新plug到cdb中 SQL> drop pluggable database clonedb; Pluggable database dropped. SQL> select pdb_name,status from dba_pdbs; PDB_NAME STATUS -------------------------------------------------- ------------- YB NORMAL PDB$SEED NORMAL YB1 NORMAL SQL>