参考文档: https://blog.csdn.net/ys5773477/article/details/53814581
error: db5 error(11) from dbenv->open: Resource temporarily unavailable
error: cannot open Packages index using db5 - Resource temporarily unavailable (11)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:
Error: rpmdb open failed
原因:rpm的数据库被损坏了
解决办法:重建rpmdb数据库
cd /var/lib/rpm
rm -f __db.*
cd ..
rpm --rebuilddb
原文:https://www.cnblogs.com/wanderingfish/p/11398957.html