Re: [OPEN-ILS-GENERAL] Z39.50 Errors

[Mike Rylander]

Hi Lisa,

If EDS is making a persistent connection to the Z server, the first
thing I would suspect is a firewall on your network that drops
quiescent connections after a pre-determined amount of time.  This can
manifest as a half open connection that some programs (presumably the
EDS backend services, in this case) do not detect, so they don't know
to attempt to reconnect.  This is more often seen with SIP2
connections, as Z connections are usually not long-lived and so don't
stay quiescent long enough to trigger the issue like SIP2 client do.

The next time this happens, it would be a good test to see if an
external program such as MARCEdit can connect to your Z server.  If
so, it's not the Z server, but something between it and EDS (or EDS
itself).  If you cannot connect, though, then it is likely a problem
with the ZOOM perl program we use to translate from Z to SRU.  You may
want to see if EDS can use SRU instead in that case.

HTH,

--
Mike Rylander
 | President
 | Equinox Open Library Initiative
 | phone:  1-877-OPEN-ILS (673-6457)
 | email:  mi...@equinoxinitiative.org
 | web:  http://equinoxinitiative.org


On Mon, Sep 18, 2017 at 9:27 AM, Lisa Setters
 wrote:
> We have our EBSCO Discovery Service (EDS) configured to use Evergreen's
> Z39.50 server to display call numbers and availability.
>
> Too often, we find that this connection has gone down. In this case, we see
> a spinning wheel showing that EDS is trying to connect to Evergreen. This
> spinning wheel disappears after EDS determines that it will not be able to
> access the material.
>
> When this happens, we reboot the Z39.50 server and the connection is
> restored.
>
> Does anybody have any idea as to how we can resolve this?
>
>
> Lisa Setters
> Research and Web Librarian
> 859.858.2100
> Frequently Asked Questions
> Library Instructional Services
> Asbury Theological Seminary
>
> *We have a new Library Loan Website! See
> http://guides.asburyseminary.edu/libraryloan for instructions.*

Re: [OPEN-ILS-GENERAL] Z39.50 Errors

[Cerninakova Eva]

Hi Lisa,

I wonder if this can not be the same problem with ejabberd configuration
that  we came across some weeks ago.
For details see
https://www.mail-archive.com/open-ils-general@list.georgialibraries.org/msg13442.html

Eva






---
Mgr. Eva Cerniňáková
cer...@jabok.cz
Tel. +420 211 222 409

Knihovna Jabok
http:/knihovna.jabok.cz
Tel.  +420 211 222 410
Jabok - Vyšší odborná škola sociálně pedagogická a teologická
Salmovská 8, 120 00 Praha 2


2017-09-18 15:27 GMT+02:00 Lisa Setters :

> We have our EBSCO Discovery Service (EDS) configured to use Evergreen's
> Z39.50 server to display call numbers and availability.
>
> Too often, we find that this connection has gone down. In this case, we
> see a spinning wheel showing that EDS is trying to connect to Evergreen.
> This spinning wheel disappears after EDS determines that it will not be
> able to access the material.
>
> When this happens, we reboot the Z39.50 server and the connection is
> restored.
>
> Does anybody have any idea as to how we can resolve this?
>
>
> Lisa Setters
> Research and Web Librarian
> 859.858.2100 <(859)%20858-2100>
> Frequently Asked Questions 
> Library Instructional Services
> Asbury Theological Seminary
>
> *We have a new Library Loan Website! See http://guides.asburyseminary.
> edu/libraryloan for instructions.*
>

[OPEN-ILS-GENERAL] Z39.50 Errors

[Lisa Setters]

We have our EBSCO Discovery Service (EDS) configured to use Evergreen's
Z39.50 server to display call numbers and availability.

Too often, we find that this connection has gone down. In this case, we see
a spinning wheel showing that EDS is trying to connect to Evergreen. This
spinning wheel disappears after EDS determines that it will not be able to
access the material.

When this happens, we reboot the Z39.50 server and the connection is
restored.

Does anybody have any idea as to how we can resolve this?


Lisa Setters
Research and Web Librarian
859.858.2100
Frequently Asked Questions 
Library Instructional Services
Asbury Theological Seminary

*We have a new Library Loan Website! See
http://guides.asburyseminary.edu/libraryloan for instructions.*

[OPEN-ILS-GENERAL] Z39.50 errors (timing out?)

[Tony Bandy]

Hi everyone,

Just wanted to check-in with the list and see if anyone else has ever seen any 
inconsistent Z39.50 network errors on their Evergreen clients when attempting 
to import records?  I've seen a few messages on the list from around 2010, but 
nothing really new.  We're running 2.4.2 and some of our libraries are 
reporting in with these network errors.  There's really no consistent pattern 
that we've been able to discern here.

Usually a workaround that's been having fairly good success for us so far is to 
uncheck all of the remote Z39.50 servers and then re-add them one at a time 
(instead of initially selecting the entire group up front).

Any ideas would be most appreciated!

--Tony

Tony Bandy
to...@ohionet.orgmailto:to...@ohionet.org
OHIONET
1500 West Lane Ave.
Columbus, OH  43221-3975
614-486-2966 x19