Perry wrote:
Tres Seaver schrieb:
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2007-05-25T10:19:01 ERROR Zope.SiteErrorLog
http://uniben.waeup.org/campus/students/C172676/study_course/create_level
Traceback (innermost last):
Module Zope2.App.startup, line 173, in zpublisher_exception_hook
Module ZPublisher.Publish, line 121, in publish
Module Zope2.App.startup, line 240, in commit
Module transaction._manager, line 96, in commit
Module Products.CPSCompat.PatchZODBTransaction, line 175, in commit
Module transaction._transaction, line 436, in _commitResources
Module ZODB.Connection, line 665, in tpc_vote
Module ZEO.ClientStorage, line 893, in tpc_vote
Module ZEO.ClientStorage, line 877, in _check_serials
ConflictError: database conflict error (oid 0x7905e6, class
BTrees._IOBTree.IOBucket, serial this txn started with
0x036ddc2b3e989fdd 2007-05-25 09:15:14.670982, serial currently
committed 0x036ddc2dd48f4e33 2007-05-25 09:17:49.818700)
Neither of those tracebacks look like they come out of the 'faster'
session machinery itself; it uses an 'OOBTree' by default for storing
the slices, not an 'IOBtree'. The primary consumer of 'IOBTree' is
probably the catalog, where it is used to map RID -> values in the
'unindex' of 'FieldIndex', etc. The original sessioning machinery uses
'IOBTree', too: are you sure you are using the faster machnery?
Yes, but I am not sure, or better I don't know who is causing these errors.
I wrote up some stuff on finding the path of an object
http://plone.org/documentation/how-to/debug-zodb-bloat/ and
http://www.zopelabs.com/cookbook/1114086617
The scripts need to be updated for recent ZODBs (change one import I think).
Laurence
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