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DozerDB / dozerdb-core

DozerDB Plugin Core Project
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Migration form Neo4j 3.5 to 5.16 #7

Closed janakmistry closed 9 months ago

janakmistry commented 9 months ago

We are looking to transition from Neo4j version 3.5 to 5.16. In our search for migration guidance, we came across a post at https://community.neo4j.com/t/migration-issue-from-3-5-to-4-x-store-format-upgrade-from-v0-a-8/61793/7 . According to the information provided in the post, the recommended approach is to first migrate from version 3.5 to 4.X and then proceed to migrate to 5.X.

This migration is essential as we plan to utilize dozerdb:5.16.0.0-alpha.1

Any assistance or guidance you can provide for this migration process would be greatly appreciated.

jmsuhy commented 9 months ago

Yes - if you are going to upgrade the stores you would follow the upgrade instructions to upgrade from 3.5 to 4.x, then you can upgrade to 5.x. You could also just use apoc to export and import, but its quite easy to upgrade manually too. Remember to set your neo4j.conf setting to allow for upgrade (which is in the neo4j docs).

We upgraded a 2TB 3.5.x graph in that manner, and it took about an hour or so. Make sure to backup your data directories too.

jmsuhy commented 9 months ago

If this answered your question, please close the ticket, otherwise let us know if the response was helpful.
Thank you.

janakmistry commented 9 months ago

Thanks for the suggestion. It works.