[Zope] ZODB.POSException.ReadConflictError

[egroup at mac.com]

I have recently upgraded the server (see previous message about my 
current box) and that definitely has had a positive effect. I've also 
been tweaking the caches, to get the most out of what I have. The 
instances of these errors rearing their ugly heads are definitely down, 
but 10% error rate on 1,000 registrations per month still means a lot 
of me registering members manually.

I'll explore the member registration process on the Plone list. Thanks 
for all your help here.

Marshall

On May 3, 2005, at 9:17 AM, Tim Peters wrote:

> ...
>
> [Tim Peters]
>>> Conflict errors are certainly normal, but IIUC the OP is seeing site
>>> errors, not just log msgs ...
>
> [Chris McDonough]
>> This is true.  I misunderstood the OP inasmuch as I thought he was
>> seeing the error message in his event log, which would be normal   It 
>> is
>> certainly the intent that end users should never see this error 
>> message
>> in a browser, but it's not a promise as it depends how the developer's
>> code is written.  Zope will retry a request three times due to 
>> conflict
>> errors before it gives up and presents the conflict-caused error to 
>> the
>> user.
>
> So maybe it's really a Plone question (as in, is Plone doing something
> here for member registration that makes read conflicts unusually
> likely?); or maybe the OP's box is overburdened, so that transactions
> take much longer than "normal" (e.g., too little RAM, whatever); or
> ...
>
> It would at least be interesting to know how often conflict errors are
> just _logged_ (as opposed to surviving long enough to show up to the
> end user).
>