[OJS] Issue with migrating to 3.0

[PedroSilvaNZ]

Hello,
I'm trying to migrate to 3.0, and I got the following error:
A database error has occurred: Duplicate entry 'defaultthemeplugin-0-enabled' for key 'plugin_settings_pkey'
What could I do about this?
Thanks,
Pedro.-

[asmecher]

@PedroSilvaNZ, is it possible that you're trying to run an upgrade on a copy of your database that has already experienced a failed upgrade?

[PedroSilvaNZ]

Hi @asmecher,
That is possible yes. I have experiences several errors while updating the database, and I've been working through those. However, I'm unsure what is this error about.
Thanks,
Pedro.-

[asmecher]

@PedroSilvaNZ, one of the last steps the upgrade process tries to accomplish is enabling the default theme. It looks like it's trying to do that on an installation that has already had this step performed, hence I suspect the upgrade has already (at least partially) been run. Make sure you're running the upgrade on a copy of 2.x that has never been partially upgraded, restoring from backup if necessary, and I think this will go away.

[PedroSilvaNZ]

Hi,
Thanks for the prompt reply. What if that is not an option? How do a fix it?
Thanks,
Pedro.-

[asmecher]

Do you mean that you don't have a backup previous to attempting an upgrade? If so, you can at least bypass the immediate problem by removing or commenting out the lines that enable the default theme plugin in dbscripts/xml/upgrade/3.0.0_update.xml -- but your database will be in an indeterminate state somewhere between the two releases and without any information on how it got there it'll be impossible to know whether you'll run into other problems further down the line.

[Shubash]

Hi
I have same problem with our journal. I didnot create the backup before upgrade to 2.4.8.1 to 3.0.1. So what can i do now. We have face many error with our journal. I try to bypass but it is not working. is there any other solution you have? I am not good at coding or commanding. I need a quick response.
Thanks
Shubash

[asmecher]

@Shubash, could you post your question in http://forum.pkp.sfu.ca/ along with as much detail as you can include?