解决使用yum时出现Error: rpmdb open failed的问题

centos系统使用yum时报错如下:

error: rpmdb: BDB0113 Thread/process 16932/139820367816768 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

原因是RPM数据库被破坏

重建数据库后恢复正常：

cd /var/lib/rpm/
for i in `ls | grep 'db.'`;do mv $i $i.bak;done
rpm --rebuilddb
yum clean all