Well, those 3 x the number of tables in the Db.

On Fri, Mar 20, 2009 at 3:17 PM, Damien Elmes <reso...@ichi2.net> wrote:
> Yep - but only the three listed on this page:
>
> http://www.sqlite.org/cvstrac/wiki?p=UndoRedo
>
> So they shouldn't be modifying anything in the main DB, only the temporary DB.
>
> On Fri, Mar 20, 2009 at 3:13 PM, Dan <danielk1...@gmail.com> wrote:
>>
>> On Mar 20, 2009, at 8:10 AM, Damien Elmes wrote:
>>
>>> Unfortunately, a user has just reported the same primary key error
>>> message with shared cache disabled, although the freezing appears to
>>> have been fixed.
>>>
>>> However, when I ask the user to send me their deck, I find that:
>>>
>>> sqlite> pragma integrity_check;
>>> integrity_check
>>> ---------------
>>> ok
>>> sqlite> select id, count(id) from cards group by id having count(id)
>>> > 1;
>>> sqlite>
>>>
>>> Any ideas?
>>
>> Triggers?
>>
>>
>>>
>>>
>>> On Fri, Mar 20, 2009 at 10:00 AM, Damien Elmes <reso...@ichi2.net>
>>> wrote:
>>>> Hi all,
>>>>
>>>> Some of my users have been reporting strange database problems
>>>> recently, which seem to have gone away when I removed a call to
>>>> enable_shared_cache(). The problems were noticeable in at least 3.6.1
>>>> and 3.6.11, when using databases of 30MB+, and doing large updates
>>>> using pysqlite.
>>>>
>>>> There were two distinct reported problems. One was that the program
>>>> would just freeze, with no disk access and CPU usage, seemingly in
>>>> the
>>>> middle of a DB query, on Win32. I wasn't able to reproduce this on
>>>> Linux.
>>>>
>>>> The other problem was reported by both win32 and mac users, and again
>>>> I wasn't able to reproduce it. It resulted in errors like this:
>>>>
>>>> sqlalchemy.exceptions.IntegrityError: (IntegrityError) PRIMARY KEY
>>>> must be unique 'update cards set isDue = 0 where type in (0,1,2) and
>>>> priority = 0 and isDue = 1' {}
>>>>
>>>> .. which is strange, because the primary key on that table is called
>>>> 'id' and is not affected by the update call.
>>>>
>>>> I also had some reports of DB corruption on OSX, but I'm not sure if
>>>> that occurred since I upgrade to 3.6.11.
>>>>
>>>> One other hint is that while I'd been using shared cache mode for at
>>>> least 6 months or more, these problems seem to have only surfaced
>>>> recently. I'm not sure if that's due to a change in the queries I've
>>>> been doing, or the fact that I changed the cache size to a bigger
>>>> number, and changed the page size to 4096.
>>>>
>>>> Anyway, disabling the shared cache appears to have fixed the problem,
>>>> and since my program is single threaded and has no need for the
>>>> shared
>>>> cache, it's not an issue for us anymore. But I thought it's worth
>>>> reporting. Have there been any other instances of problems with the
>>>> shared cache mode?
>>>>
>>>> Cheers,
>>>>
>>>> Damien
>>>>
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>
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