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Re: [EP-tech] OAI2 Harvesting Problem

Hi James,

Subjects (and to a lesser extent divisions) have always been an integral part of EPrints.  Generally removing them from workflows, citations and config files like cfg/cfg.d/eprints_render.pl, cfg/cfg.d/eprint_search_advanced.pl, cfg/cfg.d/views.pl, etc. is sufficient to hide them without breaking EPrints.  If you start removing them from cfg/cfg.d/eprint_fields.pl is when you are likely to hit problems like those you mention, as certain aspects of EPrints expect the subjects or divisions fields to at least be defined even if they are not used.

I think in this particular (/cgi/oai2) situation, you probably needed to make sure you disabled the subjects OAI set in cfg/cfg.d/oai.pl.  Unfortunately, there is a rather complex list of config changes you need to be sure to make if you want to undefine (i.e. comment out / remove) the subjects field in eprint_fields.pl and make sure this does not break anything else.  If I get the opportunity, I will see if there is a suitable place on the wiki to document what this rather complex list of config changes is.

Regards

David Newman

On 08/04/2021 17:05, James Kerwin via Eprints-tech wrote:
CAUTION: This e-mail originated outside the University of Southampton.
Hi All,

Update on this after some mooching around. Our "ListSets" option in OAI2 no longer works and sends me to an error page:


When I redid the Divisions/Uni Structure recently in EPrints the Subjects were removed as we haven't used them in years. This caused a couple of issues with the advanced search and some abstract pages. Looking at the ListSets page for another repository, the Subjects are part of this.

I'm going to attempt to correct it by either altering the ListSets (probably not) or by resurrecting the Subjects. I'll update with any success/failure.

Hopefully I can prevent other would-be unintentional wreckers following in my footsteps.

Thanks,
James

On Thu, Apr 8, 2021 at 3:58 PM James Kerwin <jkerwin2101@gmail.com> wrote:
Hi All,

Hope everyone is happy and healthy.

Our repository is harvested by a company named EBSCO. Recently they have started receiving the following warning and failing to harvest:

"Harvest has been aborted by an error "Could not harvest from https://livrepository.liverpool.ac.uk/cgi/oai2: The remote server returned an error: (500) Internal Server Error"

They use this base URL:

https://livrepository.liverpool.ac.uk/cgi/oai2

This whole area is slightly off my radar so I was hoping if there are any common things I could check? Obviously the repository is up and running. I've asked for the dates of the most recent successful harvest and the first failure as well as if it is still happening. I also need to speak with our Computing Services Department to check if the IPs can get through the firewall.

Is there anything else I can/should check based on all of your collective experience?

We did recently get a new security certificate, but I can't imagine that is a problem as we do this each year without any issues.

Thanks,
James

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