# yum provides mysql
error: rpmdb: BDB0113 Thread/process 4989/139909188998976 failed: BDB1507 Thread died in Berkeley DB library
error: db5 error(-30973) from dbenv->failchk: BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db5 - (-30973)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:
Error: rpmdb open failed
原因：rpm資料庫損壞。
解決方法:重新建構rpm資料庫
