First of all, I know this error is to be expected and we have indeed received this error at other times, but without there being a problem.
Lately we have had a problem where the CPU usage shoots way up after one of this errors and Zope has to be restarted.  It appears to always be happening with the same site (we have several sites on this Zope instance), for which the Z2 and events logs at the time of the last occurence are below.  Again, every time it spikes like this, this site in particular has been the source.  This is probably way off, but the only thing I can think of that is different between this site and our others is that the Apache rewrite rules put it in a different directory name - it goes from
www.xxxxx.com/db2/tissueresources to www.yyyyy.com/cbctr...  Could faulty rewrite rules cause it to fail the retry?  I don't know - any suggestions are welcome.
 
xx.xxx.xx.xxx - rickerw [15/Aug/2006:13:44:06 -0400] "POST /VirtualHostBase/https/xxx.xxx.xxx.xxx:443/db2/tissueresources/VirtualHostRoot/_vh_cbctr/teamspaces/dclung/portal_factory/PloneExFile/ploneexfile.2006-08-15.1441715937/base_edit HTTP/1.1" 302 518 "
https://xxx.xxx.xxx.xxx/cbctr/teamspaces/dclung/portal_factory/PloneExFile/ploneexfile.2006-08-15.1441715937/base_edit" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 2.0.50727; InfoPath.1)"
xx.xxx.xx.xxx - rickerw [15/Aug/2006:13:44:54 -0400] "POST /VirtualHostBase/https/xxx.xxx.xxx.xxx:443/db2/tissueresources/VirtualHostRoot/_vh_cbctr/teamspaces/dclung/portal_factory/PloneExFile/ploneexfile.2006-08-15.1441715937/base_edit HTTP/1.1" 302 558 "
https://xxx.xxx.xxx.xxx/cbctr/teamspaces/dclung/portal_factory/PloneExFile/ploneexfile.2006-08-15.1441715937/base_edit" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 2.0.50727; InfoPath.1)"
 
2006-08-15T13:44:56 INFO ZODB conflict error at /VirtualHostBase/https/xxx.xxx.xxx.xxx:443/db2/tissueresources/VirtualHostRoot/_vh_cbctr/teamspaces/dclung/portal_factory/PloneExFile/ploneexfile.2006-08-15.1441715937/base_edit (1 conflicts since startup at 2006-08-15T03:02:44)
 
We are using Zope 2.8.1 and Plone 2.1.x
 
-Eric
 
 
 

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