I’m trying to migrate an OwnCloud 10.2.1 instance to NextCloud. Looking at Migrating OwnCloud I expected I would be able to migrate to NextCloud 12.0.13.
This documentation is wrong or not clear on this point because migration / update will fail with message
Exception: Updates between multiple major versions and downgrades are unsupported.
Is it possible to migrate this 10.2.1 OwnCloud instance to NextCloud?
Update
To check accuracy of the migration guide I checked migration from 10.0.0 to 12.0.0. This also does not work.
Command line shows an error message
Doctrine\DBAL\Exception\DriverException: An exception occurred while executing ‘ALTER TABLE oc_addressbooks ALTER id TYPE BIGSERIAL’:
SQLSTATE[42704]: Undefined object: 7 ERROR: type “bigserial” does not exist
Update failed
This problem is easily reproduced by installing a fresh OwnCloud 10.0.0 and then migrate to NextCloud 12.0.0.
Is there a migration path for OwnCloud to NextCloud when using PostgreSQL that someone verified to actually work?
The first two migration paths in the migration guide I can confirm do not work:
- OwnCloud 10.0.1 or later won’t migrate to NextCloud 12.0.1 or later
- OwnCloud 10.0.0 won’t migrate to NextCloud 12.0.0.