rpm error

[Vivek Prasannan]

While trying to install or query packages, I get this error.
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rpm -qa
rpmdb: fatal region error detected; run recovery
error: db4 error(-30982) from dbenv->open: DB_RUNRECOVERY: Fatal error, run 
database recovery
error: cannot open Packages index using db3 -  (-30982)
error: cannot open Packages database in /var/lib/rpm
no packages
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Anyone knows how to fix ??

--initdb and --rebuilddb didnt work :-/

-Vivek