On May 4, 2007, at 10:39 AM, José Pedro Ferreira wrote:
Hello.
I am experiencing a problem with ZODB-3.6.0 / Python 2.5, under Linux.
Each time I initialize a database, i get a DisconnectedError
exception in the client, with the following traceback:
<quote>
File "/home/pferreir/workspace/indico/code/code/MaKaC/common/
db.py", line 50, in __init__
self._db=MaKaCDB(self._storage)
File "/usr/local/lib/python2.5/site-packages/ZODB/DB.py", line
238, in __init__
storage.load(z64,'')
File "/usr/local/lib/python2.5/site-packages/ZEO/
ClientStorage.py", line 746, in load
return self.loadEx(oid, version)[:2]
File "/usr/local/lib/python2.5/site-packages/ZEO/
ClientStorage.py", line 769, in loadEx
data, tid, ver = self._server.loadEx(oid, version)
File "/usr/local/lib/python2.5/site-packages/ZEO/ServerStub.py",
line 192, in loadEx
return self.rpc.call("loadEx", oid, version)
File "/usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py", line 531, in call
r_flags, r_args = self.wait(msgid)
File "/usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py", line 621, in wait
raise DisconnectedError()
DisconnectedError
</quote>
In the server side, I get:
<quote>
2007-05-04T16:20:36 (11926) new connection ('127.0.0.1', 38126):
<ManagedServerConnection ('127.0.0.1', 38126)>
2007-05-04T16:20:36 (127.0.0.1:38126) received handshake 'Z303'
2007-05-04T16:20:36 (127.0.0.1:38126) loadEx() raised exception: 0x00
Traceback (most recent call last):
File "/usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py", line 421, in handle_request
ret = meth(*args)
File "/usr/local/lib/python2.5/site-packages/ZEO/
StorageServer.py", line 248, in loadEx
return self.storage.loadEx(oid, version)
File "/usr/local/lib/python2.5/site-packages/ZODB/FileStorage/
FileStorage.py", line 523, in loadEx
pos = self._lookup_pos(oid)
File "/usr/local/lib/python2.5/site-packages/ZODB/FileStorage/
FileStorage.py", line 514, in _lookup_pos
raise POSKeyError(oid)
POSKeyError: 0x00
2007-05-04T16:20:36 (11926/127.0.0.1:38126) disconnected
2007-05-04T16:20:36 (11926) new connection ('127.0.0.1', 38127):
<ManagedServerConnection ('127.0.0.1', 38127)>
2007-05-04T16:20:36 (127.0.0.1:38127) received handshake 'Z303'
</quote>
What confuses me is that I though that a root object for the
database would be created by the client, and a DisconnectedError is
raised before that happens. What can be happening?
The root object is only created if it doesn't exist. The database is
trying to determine if it exists or not.
I don't know why the client is being disconnected. As others have
hinted, you should try this with Python 2.4 -- and please report back
if that changes the outcome.
Jim
--
Jim Fulton mailto:[EMAIL PROTECTED] Python
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