Problemas con yum despues de un error de memoria o similar

1.) yum install yum-utils
2.) yum-complete-transaction
3.) yum clean metadata
4.) yum clean all
5.) package-cleanup –dupes (check if only the doubles are in the list)
6.) package-cleanup –cleandupes
7.) yum check (and see if it stops without issues).

FUENTE: https://www.centos.org/forums/viewtopic.php?f=14&t=43842