12C - PDB archive file

在unplug一个pdb的时候，如果将扩展名定义为.pdb，oracle就会创建一个.pdb归档文件。包含pdb数据文件和xml元数据文件的压缩文件。创建archive file之后，就不用分开拷贝数据文件和xml文件了。

SQL> alter pluggable database db12pdb1 unplug into '/home/ora12/db12pdb1.pdb';

Pluggable database altered.

SQL> !ls -l /home/oracle
total 157988
-rw-r--r-- 1 oracle oinstall 161723923 Nov  6 10:58 db12pdb1.pdb

SQL> !unzip -t db12pdb1.pdb
Archive:  db12pdb1.pdb
    testing: system01.dbf             OK
    testing: sysaux01.dbf             OK
    testing: undotbs01.dbf            OK
    testing: users01.dbf              OK
    testing: /home/oracle/db12pdb1.xml   OK
No errors detected in compressed data of db12pdb1.pdb.

SQL> create pluggable database db12pdb1 as clone using '/home/oracle/db12pdb1.pdb' file_name_convert=('/home/oracle/','/u12/app/oracle/oradata/orcl/db12pdb1') ;

Pluggable database created.

SQL>