yumのパッケージデータベースの破損

どうもyumが動いている最中にブレーカーが落ちたらしく

Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
    yummain.main(sys.argv[1:])
  File "/usr/share/yum-cli/yummain.py", line 97, in main
    result, resultmsgs = do()
  File "/usr/share/yum-cli/cli.py", line 477, in doCommands
    return self.updatePkgs()
  File "/usr/share/yum-cli/cli.py", line 955, in updatePkgs
    self.doRepoSetup()
  File "/usr/share/yum-cli/cli.py", line 75, in doRepoSetup
    self.doSackSetup(thisrepo=thisrepo)
  File "__init__.py", line 263, in doSackSetup
  File "__init__.py", line 430, in excludeNonCompatArchs
  File "sqlitesack.py", line 460, in excludeArchs
  File "/var/tmp/python-sqlite-root//usr/lib/python2.3/site-packages/sqlite/main.py", line 244, in execute
_sqlite.DatabaseError: database disk image is malformed Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
    yummain.main(sys.argv[1:])
  File "/usr/share/yum-cli/yummain.py", line 97, in main
    result, resultmsgs = do()
  File "/usr/share/yum-cli/cli.py", line 447, in doShell
    yumshell.script()
  File "/usr/share/yum-cli/shell.py", line 50, in script
    self.onecmd(line)
  File "/usr/lib/python2.3/cmd.py", line 209, in onecmd
    return self.default(line)
  File "/usr/share/yum-cli/shell.py", line 70, in default
    self.base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 477, in doCommands
    return self.updatePkgs()
  File "/usr/share/yum-cli/cli.py", line 955, in updatePkgs
    self.doRepoSetup()
  File "/usr/share/yum-cli/cli.py", line 75, in doRepoSetup
    self.doSackSetup(thisrepo=thisrepo)
  File "__init__.py", line 263, in doSackSetup
  File "__init__.py", line 430, in excludeNonCompatArchs
  File "sqlitesack.py", line 460, in excludeArchs
  File "/var/tmp/python-sqlite-root//usr/lib/python2.3/site-packages/sqlite/main.py", line 244, in execute
_sqlite.DatabaseError: database disk image is malformed

こんなエラーが出てyumが動作しない。再インストールしなくてはならないかとあきらめつつ

$ yum clean all

したら直った。