对比一下压缩前后的差距,不到一半的空间。
[oracle@snow ~]$ ll
total 64024
-rw-r--r--. 1 oracle oinstall 945 Feb 8 18:33 12cpfile.ora
-rw-r-----. 1 oracle oinstall 176128 Feb 9 16:09 20150226_1.dmp
-rw-r-----. 1 oracle oinstall 1549 Feb 9 16:09 20150226_1.log
-rw-r-----. 1 oracle oinstall 237568 Feb 9 16:00 20150226.dmp
-rw-r--r--. 1 oracle oinstall 1613 Feb 8 20:00 createdb.sql
drwxr-xr-x. 7 oracle oinstall 4096 Jun 10 2013 database
-rw-r-----. 1 oracle oinstall 1618 Feb 9 16:00 export.log
-rw-r--r--. 1 oracle oinstall 154 Feb 9 16:09 flashback.par
-rw-r-----. 1 oracle oinstall 64253952 Feb 9 09:56 full.dmp
-rw-r-----. 1 oracle oinstall 29419 Feb 9 10:04 full.log -rw-r-----. 1 oracle oinstall 241664 Feb 9 16:43 hrc.dmp <压缩数据
-rw-r-----. 1 oracle oinstall 2568 Feb 9 16:43 hrc.log -rw-r-----. 1 oracle oinstall 577536 Feb 9 15:22 hr.dmp <非压缩数据
-rw-r-----. 1 oracle oinstall 2549 Feb 9 15:22 hr.log
-rw-r-----. 1 oracle oinstall 1721 Feb 9 15:32 import.log
-rw-r--r--. 1 oracle oinstall 88 Feb 9 14:43 pro.par
[oracle@snow ~]$
[oracle@snow ~]$
[oracle@snow ~]$ sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Mon Feb 9 16:47:39 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
SYS@ora12c >drop user hr cascade;
User dropped.
SYS@ora12c >exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
[oracle@snow ~]$