Tim Peters wrote at 2005-12-14 12:05 -0500:
>> return self.rpc.call('tpc_begin', id, user, descr, ext, tid, status)
>> File "lib/python/ZEO/zrpc/connection.py", line 536, in call
>> raise inst # error raised by server
>> StorageTransactionError: Multiple simultaneous tpc_begin requests from one
We see this occationally in ZODB 3.2 in the following situation:
From time to time our ZEO (running on Solaris) fails
to create a "TemporaryFile" (because Solaris raises
an "OSError: error 11 -- resource temporarily unavailabe" from "fdopen").
Apparently, ZEO does not expect this kind of exception and
forgets to remove the lock set for this client.
As a consequence, any further commit trial by this client
results in the "Multiple simulataneous tpc_begin..." exception.
For more information about ZODB, see the ZODB Wiki:
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