[ZODB-Dev] ZODB conflict error with authenticated users
Andreas Kaiser
kaiser at xo7.de
Tue Aug 31 03:55:50 EDT 2004
Hi all,
maybe this is a faq, by i wasn´t able to find the information i need.
i have a plone instance which generates lots of "ZODB conflict error" in
event.log:
2004-08-30T20:09:36 INFO(0) ZODB conflict error at
/VirtualHostBase/http/host:80/foo/bar/VirtualHostRoot/X/y/folder_contents:
database conflict error (oid 000000000000042d, serial was
0357800120ebecdd, now 03577ffbb17eac22) (27 conflicts since startup at
2004-08-30T19:19:28)
------
2004-08-30T20:09:49 INFO(0) ZODB conflict error at
/VirtualHostBase/http/host:80/foo/bar/VirtualHostRoot/X/y/folder_contents:
database conflict error (oid 000000000000042d, serial was
0357800120ebecdd, now 03577ffbb17eac22) (28 conflicts since startup at
2004-08-30T19:19:28)
1) I alwas have exactly 2 or more log records like the above for 1
request.
2) Such errors only occur with authenticated users who don´t have the
"Manager" role assigned to the user itself, but have some local
role(s) assigned on a subfolder of the site.
3) Such requests consume _really_much_ cpu
(> 20 seconds on a athlon-xp 2600+ / 2gb)
Has anybody expierenced something like this?
I´ve also applied a patch posted by Dieter Maurer on this newsgroup to
get more detailed information about the objects causing the conflicts,
but to be honest: I don´t know what to do with this information (i.e.
how to identify the objects causing the problems).
Any pointers welcome.
Andreas
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