RPM安装一个包时出现问题！

lovebird

rpm -ivh 时出现以下错，请大家看一下是什么原因！

[gyg@webserver gyg]$ rpm -ivh glibc-devel-2.3.2-101.4.i386.rpm
warning: glibc-devel-2.3.2-101.4.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: cannot get exclusive lock on /var/lib/rpm/Packages
error: cannot open Packages index using db3 - 不允许的操作 (1)
error: cannot open Packages database in /var/lib/rpm
[gyg@webserver gyg]$

lovebird

啊，是我错了，我没用root用户，谢谢！