rpmdb 版本不匹配
rpmdb: Program version 4.3 doesn’t match environment version error: db4 error(-30974) from dbenv->open: DB_VERSION_MISMATCH: Database environment version mismatch error: cannot open Packages index using db3 – (-30974) error: cannot open Packages database in /var/lib/rpm
解决方法：
# cd /var/lib/rpm # rm -rf __* # rpm –rebuilddb
