[Zope] zodb lock

[Garrett G. Hodgson]

i've been trying, with minor success, to figure out
how to use ZODB.  i've now got a little app that uses
a FileStorage db to store Person objects, where a Person
has just a name and an age.  it works the first time
i run it, but subsequent times i get:

Traceback (innermost last):
  File "./TestPersistence.py", line 29, in ?
    print GetPeople()
  File "./TestPersistence.py", line 16, in GetPeople
    app = TryPersistence.App()
  File "./TryPersistence.py", line 27, in __init__
    self.db = ZODB.DB( ZODB.FileStorage.FileStorage( file ) )
  File "/usr/local/src/Zope-2.1.3-src/lib/python/ZODB/FileStorage.py",
line 262, in __init__
    lock_file(f)
  File "/usr/local/src/Zope-2.1.3-src/lib/python/ZODB/lock_file.py",
line 101, in lock_file
    raise error, (
ZODB.POSException.StorageSystemError: Could not lock the database file. 
There must be
another process that has opened the file.

i assume i'm missing some cleanup or finalization, beyond
get_transaction().commit()

any ideas?
(i didn't post the code because it seemed overly lengthy for this
question.
i can post it if that'd help.)

thanks


-- 
Garry Hodgson			Every night 
garry@sage.att.com		a child is born
Software Innovation Services	is a Holy Night.
AT&T Labs			 - Sophia Lyon Fahs