Confluence Server Upgrade from 6.14.0 to 6.15.10 returns "can't use upgrader to downgrade"

[Charles Rivenbark]

While upgrading Confluence Server from version 6.14.0 to 6.15.10 the upgrade returned "You can't use the upgrader to downgrade Confluence."

[Evan Underwood-Harley · Accepted solution]

Hi Charles,

Lets first verify what version the database thinks you are running. Can you run the below on the DB:

SELECT TOP 1 BUILDNUMBER 
 FROM CONFVERSION 
 ORDER BY INSTALLDATE DESC;

 We can correlate that build number to a version on here - https://developer.atlassian.com/server/confluence/confluence-build-information/?_ga=2.18022522.250371922.1591001904-973955557.1568640194

Regards

Evan

[Charles Rivenbark]

Build number in the confluence database is 8401 which correlates to v7.2 - 7.4.  The web page lists v6.14.0 though at the bottom of the page.  I think someone may have tried to upgrade to 7.3 and failed.  I will check.  Thanks.

[Charles Rivenbark]

Would it be feasible to just change the BUILDNUMBER in the table 7901 (for 6.14.0) or should we just do a ZIP install?

[Evan Underwood-Harley]

Changing the BUILDNUMBER wouldn't work as the database schema has upgraded to 7.3

Few key questions before we decide how to proceed:

- Do you have a database backup taken before the upgrade?

- If you don't have a database backup, do you have XML backups in your confluence home directory usually these are located under <confluence-home-directory>/backup and are enabled by default when installing confluence

- Is this the production confluence instance which is now down? Or test environment?

- Do you still want to get to 6.15.10 or can this be upgraded to 7.3.x?

Regards

Evan

[Charles Rivenbark]

It is a test environment.  We have decided to just do a full build from the ground up since we don't have any data that needs to be preserved.

[Evan Underwood-Harley]

That's probably the easiest way.