[Zope-dev] ERROR(200) ZODB Couldn't load state for... Memory problem?

[Russ Ferriday]

Thanks, Chris.
We're fronting two Zopes with Pound for load balancing. I can't see 
there would be any connection with this error. But I mention it in case 
there's a pattern.
Also, the database came from 2.7.0 and an earlier python. This looks 
like resource starvation to me. The servers run for an hour or two this 
problems shows up, becoming worse for a while, then we need a restart.
I'm try to debug it tomorrow. What would you look for? Any tips for 
resource monitoring?
--r.
On 22 Jul 2004, at 21:49, Chris McDonough wrote:

> I have seen this as well but I haven't been able to pin it down.
>
> On Thu, 2004-07-22 at 16:16, Russ Ferriday wrote:
>> Hi all,
>>
>> On OSX 10.3 (Pahter), Python 2.3.4, Zope 2.7.1, I'm frequently
>> seeingthis..
>> 2004-07-22T14:00:24 ERROR(200) ZODB Couldn't load state
>> for00000000000016ad
>> Traceback (most recent call last):
>>   File "/usr/local/zope/zope271/lib/python/ZODB/Connection.py",
>> line559, in setstate
>>     p, serial = self._storage.load(oid, self._version)
>>   File "/usr/local/zope/zope271/lib/python/ZEO/ClientStorage.py",
>> line755, in load
>>     self._cache.store(oid, p, s, v, pv, sv)
>>   File "/usr/local/zope/zope271/lib/python/ZEO/ClientCache.py",
>> line601, in store
>>     self._store(oid, p, s, version, pv, sv)
>>   File "/usr/local/zope/zope271/lib/python/ZEO/ClientCache.py",
>> line631, in _store
>>     f.seek(self._pos)
>> AttributeError: 'NoneType' object has no attribute 'seek'
>>
>> It's intermittent at first, then back-to-back.
>>
>> Following thread leads me to look for memory shortage. But I'd expecta
>> different message in that case.
>> http://www.mail-archive.com/zope-dev@zope.org/msg15039.html
>>
>> This thread seems to suggest such messages (in different context)
>> canbe ignored. But I can't do that. This is a symptom of a bigger
>> problem.
>> http://mail.zope.org/pipermail/zope/2001-August/097300.html
>>
>> Has anyone seen this in these circumstances?
>> --r.
>>
>>
>>
>>
>> —————————————————————
>> Russ Ferriday
>> Solution Workshops for Plone
>> (+44) (0) 7789 338868
>> http://www.solutionworkshops.com
>>
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—————————————————————
Russ Ferriday
Solution Workshops for Plone
(+44) (0) 7789 338868
http://www.solutionworkshops.com
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