[Koha] Need help with Koha instance that refuses to do checkouts

[Chris Brown]

Hi James,

Yes I did follow up Katrin's suggestion but found nothing that looked
obviously wrong, and anyway I don't think there have been any configuration
changes since well before the problem first showed up. Following another
suggestion *we have cleared the browser caches on all our client machines
and everything seems to be working again*. I have no idea why, and am not
convinced that the problem isn't going to come back at some point. But all
is well at the moment.

Which leads me to a question I've been meaning to ask for a while ... *does
Koha use cookies?*

My thanks to all who suggested solutions. Much appreciated!

Chris Brown (Voluntary Libraries in Sheffield)

On Mon, Jun 21, 2021 at 10:46 AM Mason James <mtj at kohaaloha.com> wrote:

> hi Chris
> did you try Katrin's suggestion?, it is the most likely problem
>    https://lists.katipo.co.nz/pipermail/koha/2021-June/056338.html
>
> try loading your database into a test system, and experiment by removing
> likely issuing rules until you find your problematic rule
>
> cheers, Mason
>
>
> On 21/06/21 6:42 pm, Chris Brown wrote:
> > Dear Koha Community
> >
> > Following up my post on 12 June I am repeating my call for help as Koha
> is
> > effectively unusable right now at one of our libraries.
> >
> > We are running Koha 19.11 on Debian 9.11 (stretch). This supports 5 Koha
> > instances for some of the volunteer-run libraries in Sheffield. It has
> been
> > stable and working fine for many months.
> >
> > Currently we have a serious problem with one of these instances. Any
> > attempt to check out a book hangs (never completes) and we see
> > /usr/share/koha/intranet/cgi-bin/circ/circulation.pl consuming most of
> the
> > CPU cycles (stuck in a loop perhaps?). On one occasion I noticed it was
> > renew.pl consuming all the CPU.
> >
> > I have tried disabling plack for this instance, and have rebuilt the
> zebra
> > index, but the problem persists. There is nothing obvious reported in the
> > log files, though I may not be looking in the right places. I cannot see
> > any obvious problems with the configuration, though again I might be
> > looking at the wrong things. The other 4 instances are working OK.
> >
> > *Any advice on how to debug or fix this would be greatly appreciated.*
> >
> > Does anyone know how to turn on tracing of MySQL transactions? I was
> > wondering if looking at the activity at the database end might help.
> >
> > Thanks and Best Regards,
> >
> > Chris Brown (Voluntary Libraries in Sheffield)
> > _______________________________________________
> >
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>