# Package Management

## Berkley DB Issue
If the error message is
```
error: rpmdb: BDB0113 Thread/process 21389/140229907089216 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
```

then do 

```
mv /var/lib/rpm/__db* /tmp
yum clean all
```

## Rebuild RPM Database
When `yum`, `dnf` or `rpm` hang or have errors pointing to a problem with their database, then follow the
[Guide to rebuild a corrupted RPM database](https://www.tecmint.com/rebuild-corrupted-rpm-database-in-centos/)