UnableToMigrateException: The selected target store format 'AF4.3.0' (introduced in 4.3.0) is no longer supported

Question

I am trying to upgrade Neo4J from version 4.4.4 to 5.8.0 but getting below Exception:

UnableToMigrateException: The selected target store format 'AF4.3.0' (introduced in 4.3.0) is no longer supported

How do I resolve this? Can anyone please help me!

Answer 1

When migrating the database should be very careful to migrate to the requested target store format.

This is for v5.8.0 release:

To check the storeformat version run the database info check cmd $neo4j/bin/neo4j-admin database info YOUR_DB_NAME_HERE

For Example I'm migrating from v4.4.4 to v5.8.0 It will give below:

Database name: YOUR_DB_NAME Database in use: false Store format version: record-standard-0.1

Store format introduced in: 4.3.0 Store format superseded in: 5.0.0

Last committed transaction id:15234 Store needs recovery: false

Store format superseded - Shows the required target store format.

To update the store format run: $neo4j/bin/neo4j-admin database migrate --force-btree-indexes-to-range YOUR_DB_NAME_HERE

After this check whether store format is updated or not with database info check cmd It should show below:

Database name: neo4j Database in use: false Store format version: record-standard-1.1 Store format introduced in: 5.0.0 Last committed transaction id:15235 Store needs recovery: false

The same migration is to be done to the system folder database ($neo4j...data/databases/system) as well - Don't forget to do this.

For migration both the databases in data/databases has to be migrated for successful upgradation.

Hope this solution works for others too! I will be glad if it helped.