The Misadventures of Penoi

Problem

rpm -qa | grep <package>
rpmdb: unable to join the environment
error: db4 error(11) from dbenv->open: Resource temporarily unavailable
error: cannot open Packages index using db3 - Resource temporarily unavailable (11)
error: cannot open Packages database in /var/lib/rpm


Solution:

Remove the existing db

#cd /var/lib/rpm
#rm -rf __db.*

Rebuild the db

#rpm --initdb
#rpm --rebuilddb