I did the same procedure as I'd do with M$...

1) Reboot the system
2) ftp download.fedora.redhat.com
3) download glibc*
4) rpm -Uvh --force --nodeps glibc-comm* (yeah... after a reboot rpm works)
5) rm glibc-comm* && rpm -Uvh --force --nodeps glibc*

And everything comes back to life...

Paul Nasrat escreveu:
On Tue, 2006-03-07 at 21:24 -0300, Casimiro de Almeida Barreto wrote:
  
After update done 00:23 08/Mar/2006 the following  happened (so  I
can't even get version for packages...):
 
[root@terra ~]# yum update
rpmdb: PANIC: fatal region error detected; run recovery
error: db4 error(-30977) from dbenv->open: DB_RUNRECOVERY: Fatal
error, run database recovery
error: cannot open Packages index using db3 -  (-30977)
error: cannot open Packages database in /var/lib/rpm
    

rpm issue, what steps did you take up to that point? If you experienced
any failures what were they?

Please back up your rpmdb (/var/lib/rpm) and create a bugzilla,
preferably with the history above.

Paul