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我有我想要安裝到CentOS 6系統上的軟件模塊的RPM。我已經通過命令'rpm -ivh'將此RPM安裝到yum數據庫中。我的理解是，現在RPM可以用來通過'yum install'來安裝模塊，但是這沒有奏效，即當我嘗試時，我得到了「沒有安裝」的消息。所以我不能做正確的事情？任何人都可以建議嗎？如何使用RPM（cx_Oracle）將軟件安裝到CentOS 6上？
FYI這裏是我試過到目前爲止：
$ rpm -ivh cx_Oracle-5.1.2-11g-py27-1.x86_64.rpm
Preparing... ########################################### [100%]
1:cx_Oracle ########################################### [100%]
$ yum search cx_Oracle
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.ash.fastserv.com
* extras: mirror.symnds.com
* updates: ftp.linux.ncsu.edu
base | 3.7 kB 00:00
extras | 3.5 kB 00:00
updates | 3.5 kB 00:00
============================ N/S Matched: cx_Oracle ============================
cx_Oracle.x86_64 : Python interface to Oracle
$ yum install cx_Oracle
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.ash.fastserv.com
* extras: mirror.symnds.com
* updates: ftp.linux.ncsu.edu
base | 3.7 kB 00:00
extras | 3.5 kB 00:00
updates | 3.5 kB 00:00
Setting up Install Process
Nothing to do
$ yum update cx_Oracle
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.ash.fastserv.com
* extras: mirror.symnds.com
* updates: ftp.linux.ncsu.edu
base | 3.7 kB 00:00
extras | 3.5 kB 00:00
updates | 3.5 kB 00:00
Setting up Update Process
No Packages marked for Update
在此先感謝您的任何建議，見解等