You could try using --skip-broken to work around the problem 解决办法

--> Missing Dependency: libevent-1.4.so.2()(64bit) is needed by package mysql-proxy-0.5.1-2.el5.x86_64 (epel)
Error: Missing Dependency: libevent-1.4.so.2()(64bit) is needed by package mysql-proxy-0.5.1-2.el5.x86_64 (epel)
You could try using --skip-broken to work around the problem
You could try running: package-cleanup --problems
package-cleanup --dupes
rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.

 

解决:

[root@oracle10g bin]# yum --skip-broken update