[ZODB-Dev] Conflict Error that won't go away?

[Dennis Allison]

We've seen this problem occasionally.  Usually deleting the ZEO cache 
clears the problem.


On Thu, 2 Mar 2006, Sidnei da Silva wrote:

> Hi there,
> 
> I'm facing an issue with a ConflictError that won't go away even after
> restarting. Looks like the ZODB got screwed somehow. Here's the
> traceback:
> 
>     * Module Zope.App.startup, line 163, in zpublisher_exception_hook
>     * Module ZPublisher.Publish, line 107, in publish
>     * Module Zope.App.startup, line 222, in commit
>     * Module ZODB.Transaction, line 252, in commit
>     * Module ZODB.Connection, line 738, in tpc_vote
>     * Module ZEO.ClientStorage, line 849, in tpc_vote
>     * Module ZEO.ClientStorage, line 833, in _check_serials
> 
> ConflictError: database conflict error (oid 0xd40acd, serial this txn
> started with 0x0363a06b42bc2499 2006-02-24 15:39:15.641000, serial currently
> committed 0x0363b6ce866bdc88 2006-02-28 15:10:31.505000)
> 
> The system where this is happening is running a ZEO Server and a
> single ZEO Client. At some point, near the date mentioned in the
> traceback, the system ran out of disk space during a large
> transaction.
> 
> Could this have affected the database?
> 
> What are the steps to recover from it? Maybe truncate the database?
> 
> What can be done to avoid it in the future?
> 
> 

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