You are viewing the PKP Support Forum | PKP Home Wiki

OCS to OJS data export

Are you responsible for making OJS work -- installing, upgrading, migrating or troubleshooting? Do you think you've found a bug? Post in this forum.

Moderators: jmacgreg, btbell, michael, bdgregg, barbarah, asmecher

Forum rules
What to do if you have a technical problem with OJS:

1. Search the forum. You can do this from the Advanced Search Page or from our Google Custom Search, which will search the entire PKP site. If you are encountering an error, we especially recommend searching the forum for said error.

2. Check the FAQ to see if your question or error has already been resolved.

3. Post a question, but please, only after trying the above two solutions. If it's a workflow or usability question you should probably post to the OJS Editorial Support and Discussion subforum; if you have a development question, try the OJS Development subforum.

OCS to OJS data export

Postby johnkperks » Wed Jun 13, 2012 4:43 pm


We have a database of 300 delegates in OCS. Recently, we try to export that OCS database of users to OJS and keep on getting error "OJS DB Error: Column 'last_name' cannot be null". Can someone help please?
Posts: 14
Joined: Wed Nov 02, 2011 3:10 am

Re: OCS to OJS data export

Postby asmecher » Wed Jun 13, 2012 5:16 pm

Hi johnkperks,

Are you doing a direct database conversion (i.e. right from your OCS MySQL to your OJS MySQL)?

The message suggests that you're trying to insert a value into the users table without supplying a value for the last_name column, which requires a value.

Alec Smecher
Public Knowledge Project Team
Posts: 10015
Joined: Wed Aug 10, 2005 12:56 pm

Return to OJS Technical Support

Who is online

Users browsing this forum: Bing [Bot], Yahoo [Bot] and 2 guests