问题

yum -y update升级yum失败：

解决

# cd /var/lib/rpm
# ls
Basenames     __db.001  __db.003  Group       Name          Packages     Requirename  Sigmd5
Conflictname  __db.002  Dirnames  Installtid  Obsoletename  Providename  Sha1header   Triggername
# rm -rf __db*
# rpm --rebuilddb

# yum update

解决yum update升级失败，提示error: rpmdb: BDB0113 Thread/process 12323/139694951213120 failed: BDB1507