yum failure.

[William]

Good afternoon,

I have F20 on a 64-bit system.  I'm a home user with no sysadmin 
training and no real sysadmin experience.  I tried to do my weekly 
patches, and got this:

bash.6[~]: yum update
error: rpmdb: BDB0113 Thread/process 2156/140591811774272 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
bash.7[~]:

How do I get my weekly patches done?

Thank-you in advance for your help.
Bill.