[Zope] CONFLICT Competing writes?

[Li Dongfeng]

Li Dongfeng wrote:
> 
> Hi,
> 
> I used a dtml method called run_program_action to
> process user form input, using the POST method and
> ENCTYPE="multipart/form-data". When I tried to submit
> simutaneously from two browser window, I got this
> error message from the Z Server console:
> 
> 1999-11-24T06:43:40 INFO(0) Z2 CONFLICT Competing writes at,
> /Stat/rserver/simu01/run_program_action
> ----- form -----
> {}

Sorry, the message contained:
------
1999-11-24T08:58:22 ERROR(200) ZODB Couldn't load state for
'\000\000\000\000\000\000\001\317'
------
1999-11-24T08:58:22 INFO(0) Z2 CONFLICT Competing writes at,
/Stat/rserver/simu01/run_program_action
----- form -----
{}

What is this number \000....\317? Is is an object id()?

> 
> Where the line below -- form -- should display
> my form input. But in the two submissions only
> one got the desired resonse, the other responded
> erroneously because the form input was lost due to CONFLICT.
> 
> I heard that Zope is multi-threaded. Why can't it start
> two instances of the same DTML method? How can I solve
> this conflict problem?
> 
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