在Redhat 6.4版本下。用光盘上的Packages安装出现以下怪现象：
[root@oradb1 Packages]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/vg_rel6rac11-lv_root
16070076 5073028 10180716 34% /
tmpfs 961744 160 961584 1% /dev/shm
/dev/sda1 495844 38096 432148 9% /boot
/dev/mapper/softvg-softlv
51602044 9257796 39723016 19% /software
/dev/sr0 3632776 3632776 0 100% /mnt/cdrom
[root@oradb1 Packages]#
[root@oradb1 Packages]# rpm -ivh libaio*
Preparing... ########################################### [100%]
package libaio-0.3.107-10.el6.x86_64 is already installed
package libaio-devel-0.3.107-10.el6.i686 is already installed
package libaio-devel-0.3.107-10.el6.x86_64 is already installed
package libaio-0.3.107-10.el6.i686 is already installed
root@oradb1 Packages]#
[root@oradb1 Packages]#
[root@oradb1 Packages]# rpm -qa libaio*
[root@oradb1 Packages]# rpm -qa libaio-0.3.107-10.el6.x86_64
[root@oradb1 Packages]#