CentOS7 错误：rpmdb: BDB0113 Thread

问题：CentOS7更新yum源失败！出现以下报错

[root@VM_166_107_centos conf.d]# yum update
错误：rpmdb: BDB0113 Thread/process 9485/140215745509440 failed: BDB1507 Thread died in Berkeley DB library
错误：db5 错误(-30973) 来自 dbenv->failchk：BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery
错误：无法使用 db5 -  (-30973) 打开 Packages 索引
错误：无法从 /var/lib/rpm 打开软件包数据库
CRITICAL:yum.main:

Error: rpmdb open failed

解决方案：

1、切换到/var/lib/rpm目录：

cd /var/lib/rpm

2、使用ls命令查看目录：

[root@VM_166_107_centos rpm]# ls
Basenames  Conflictname  __db.001  __db.002  __db.003  Dirnames  Group  Installtid  Name  Obsoletename  Packages  Providename  Requirename  Sha1header  Sigmd5  Triggername

3、删除以__db.开通的文件：

rm -rf __db*

4、重新编译db

rpm --rebuilddb

4、再次尝试yum update (显示以下内容说明已经成功)：

[root@VM_166_107_centos rpm]# yum update
已加载插件：fastestmirror, langpacks, product-id, search-disabled-repos, subscription-manager

This system is not registered with an entitlement server. You can use subscription-manager to register.

Determining fastest mirrors
epel                                                                                                                                                                                                           | 4.7 kB  00:00:00     
extras                                                                                                                                                                                                         | 2.9 kB  00:00:00     
os                                                                                                                                                                                                             | 3.6 kB  00:00:00     
updates                                                                                                                                                                                                        | 2.9 kB  00:00:00     
(1/5): epel/7/x86_64/group_gz                                                                                                                                                                                  |  96 kB  00:00:00     
(2/5): extras/7/x86_64/primary_db                                                                                                                                                                              | 246 kB  00:00:00     
(3/5): epel/7/x86_64/updateinfo                                                                                                                                                                                | 1.1 MB  00:00:00     
(4/5): epel/7/x86_64/primary_db                                                                                                                                                                                | 7.0 MB  00:00:01     
(5/5): updates/7/x86_64/primary_db