The db history topic or its content is fully or partially missing. Please check database schema history topic configuration and re-execute the snapshot.

Root cause

The internal schema history Kafka topic was deleted, compacted (cleanup.policy=compact destroys it), or its retention expired. Debezium uses this topic to replay the full DDL history needed to decode binary events.

How to fix

1. Re-create the topic with correct settings:
   kafka-topics.sh --bootstrap-server <broker>:9092 --create --topic schema-history --partitions 1 --config cleanup.policy=delete --config retention.ms=-1
2. Then use snapshot.mode=recovery to rebuild the schema history from the live database.
3. Never share the schema history topic between multiple connectors — each must have its own.