sudo up2date -u

Fetching Obsoletes list for channel: rhel-i386-ws-4...

Fetching rpm headers...
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Name                                    Version        Rel
----------------------------------------------------------
compat-db                               4.1.25         9                 i386
db4                                     4.2.52         7.1               i386


Testing package set / solving RPM inter-dependencies...
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RPM package conflict error.  The message was:
Test install failed because of package conflicts:
package compat-db-4.1.25-9 is already installed
package db4-4.2.52-7.1 is already installed