title: Remove package on centOS
body: <p>Helloo,
  I have a prblem with centOS
  I try to uninstall oracle instant client. When I do 'yum list install' It's write that the package is installed, but when I try to remove 'rpm -e oracle...' it's say that the package is not installed.
  How to remove the package of the list ?</p>
  
  <p>regards</p>