see this
[root@db01 ~]# rpm -qa rpmdb: Thread/process 2829/139889011808000 failed: Thread died in Berkeley DB library error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index using db3 - (-30974) error: cannot open Packages database in /var/lib/rpm rpmdb: Thread/process 2829/139889011808000 failed: Thread died in Berkeley DB library error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages database in /var/lib/rpm
to fix do this
[root@db01 ~]# rpm --rebuilddb rpmdb: Thread/process 2829/139889011808000 failed: Thread died in Berkeley DB library error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index using db3 - (-30974) [root@db01 ~]# rm -f /var/lib/rpm/__* [root@db01 ~]# rpm --rebuilddb [root@db01 ~]# rpm -qa | wc -l 416