背景：安装软件包的时候，被我手动终止了，可能导致yum的数据库事务啥的存在问题：
问题描述：
[root@iZ25dcp92ckZ sbin]# yum install mailx -y 错误：rpmdb: BDB0113 Thread/process 30438/140188047517696 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 [root@iZ25dcp92ckZ sbin]# yum clean all 错误：rpmdb: BDB0113 Thread/process 30438/140188047517696 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:
1、前提条件：安装软件包的时候，被我手动终止了
[root@dhcp yum.repos.d]# yum clean all
rpmdb: Thread/process 4541/140619363587840 failed: Thread died in Berkeley DB library
error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db3 - (-30974)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:
Error: rpmdb open failed
[root@dhcp yum.repos.d]# yum makecache
rpmdb: Thread/process 4541/140619363587840 failed: Thread died in Berkeley DB library
error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery
error: cannot open Packages index using db3 - (-30974)
error: cannot open Packages database in /var/lib/rpm
CRITICAL:yum.main:
2、根据提示可以知道rpm数据库被损坏，如是按照下面的方法进行重建
[root@dhcp yum.repos.d]# cd /var/lib/rpm/
[root@dhcp rpm]# ls
Basenames __db.004 Name Pubkeys Triggername
Conflictname Dirnames Obsoletename Requirename
__db.001 Filedigests Packages Requireversion
__db.002 Group Providename Sha1header
__db.003 Installtid Provideversion Sigmd5
[root@dhcp rpm]# rm __db.* -rf
[root@dhcp rpm]# rpm --rebuilddb
[root@dhcp rpm]# yum clean all
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id,
: refresh-packagekit, security, sub
: verify, versionlock
Updating certificate-based repositories.
Unable to read consumer identity
Loading support for Red Hat kernel ABI
Cleaning repos: rhel-source
Cleaning up Everything
0 delta-package files removed, by presto
[root@dhcp rpm]# yum update
Loaded plugins: aliases, changelog, downloadonly, kabi, presto, product-id,
: refresh-packagekit, security, sub
: verify, versionlock
Updating certificate-based repositories.
Unable to read consumer identity
Loading support for Red Hat kernel ABI
rhel-source | 4.0 kB 00:00 ...
rhel-source/primary_db | 3.1 MB 00:00 ...
Setting up Update Process
No Packages marked for Update
来自：http://blog.sina.com.cn/s/blog_6fb8aaeb0101aegn.html
