In our Neo4j EC2 cluster, when one member is replaced due to an EC2 instance failure, the newly launched server starts in a "free" state rather than getting "enabled" as expected. Upon reviewing the debug logs, I encountered the following error:
025-04-24 10:05:56.117+0000 INFO [c.n.d.DefaultDatabaseDataChangeService] Database data change listener com.neo4j.dbms.systemgraph.TopologyGraphDbmsModelSnapshotTracker@1978b0d5 registered for DatabaseId{00000000[system]}
2025-04-24 10:05:56.120+0000 WARN [o.n.d.d.r.SystemGraphReadOnlyDatabaseLookupFactory] Unable to lookup readonly databases from the system database due to error! Using previous lookup SystemGraphLookup[alwaysReadOnly=true, databaseIds=[]].
Underlying error: null
Does any one know the reason for this issue?