Fixing RPM Database
January 13th, 2009
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I have got 3 servers that give problems when running yum update, ouch 
seems all update is failed.. anyway i try to searching on internet and found it.
1. Check for processes holding the rpm database open (usually in MUTEX/FUTEX states):
lsof | grep /var/lib/rpm
If it finds any, kill -9 them all.
2. Delete any temporary DB files:
rm -fv /var/lib/rpm/__*
rpm –rebuilddb -v -v
If you still have problems, a reboot is probably quickest, then repeat steps 2 and 3 above.
also don;t forget to kill all process yum and rpmq
At least i dont have to rebooted the server. after doing those command and try to run update again.. it’s work smoothly 