Question about upgrading.

[Paul Senn]

Hi we are running openolat 12.5 with some customizations for language translation and we also wrote our own methods to extend the API.

We have created a new server with upgraded more recent version of tomcat and would like to go to most recent version of olat. Our question is about the sequence we should follow.  If we lay down the 12.5 version and then put the latest version war file in place, will it be able to automatically upgrade the database and data files ?  Also the custom translation files?  We understand we will need to add the custom app to the source and do a build to get that included.  We are not sure of the limits of the auto upgrade capability.

Thanks for your help

[Florian Gnägi]

Hi

wo, this is a really old version you have!

See this here: https://docs.openolat.org/manual_admin/installation/updateGuide/#oldversions

My recommendation would be to do every mayor release step by step: 

13, 14, 15, 16 17, 18 19. You might be able to skip some, but since I did not test it and have no time to do so I will not give you a recommendation. And frankly, I don’t have a 12.5 installation at hand to play with ;-)

Some releases have migration tasks that can take quit some time, so make sure those tasks are finished before your stop the system. Have a close look at your file bcroot/system/installed_upgrades.xml

When installing a new version, make sure the installationComplete is set to true for current upgrade your are installing. If not, there might still be an upgrader running in the background. Note, depending on the size of your installation there are upgraders that can take many hours or even days if you have many terrabytes of data. 

Cheers

Florian

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