We started getting this error couple of days ago machine that has been 
auto updating for years. I would assume that it was a corruption of a 
local database but it happened on two systems simultaneously.

  Googling for that error message produces nothing on yum but several 
hits on's SQLite.

  I'd appreciate any insight into what the error means and how to track 
down exactly which repo or file on my system is causing it the problem.

  Below is what I see, yum update also produces the same error message.

  Thanks,
  Joe

[root@mavraki yum.repos.d]# yum clean all
Loaded plugins: fastestmirror, refresh-packagekit, security
Cleaning repos: CONDOR-stable VDT-Production-sl6 elrepo lscsoft-epel 
lscsoft-pegasus lscsoft-production sl sl-security
Cleaning up Everything
Cleaning up list of fastest mirrors
[root@mavraki yum.repos.d]# yum repolist
Loaded plugins: fastestmirror, refresh-packagekit, security
Determining fastest mirrors
  * elrepo: elrepo.org
  * sl: ftp1.scientificlinux.org
  * sl-security: ftp1.scientificlinux.org
CONDOR-stable | 2.9 kB     00:00
CONDOR-stable/primary_db | 427 kB     00:00
VDT-Production-sl6 | 1.3 kB     00:00
VDT-Production-sl6/primary |  35 kB     00:00
VDT-Production-sl6 11/11
elrepo | 2.9 kB     00:00
elrepo/primary_db | 732 kB     00:00
lscsoft-epel | 2.7 kB     00:00
lscsoft-epel/primary_db | 4.2 MB     00:02
lscsoft-pegasus | 2.6 kB     00:00
lscsoft-pegasus/primary_db | 5.8 kB     00:00
lscsoft-production | 2.9 kB     00:00
lscsoft-production/primary_db | 301 kB     00:00
sl | 3.5 kB     00:00
sl/primary_db | 4.2 MB     00:03
sl-security | 3.0 kB     00:00
sl-security/primary_db |  12 MB     00:06
Error: file is encrypted or is not a database
[root@mavraki yum.repos.d]#