oracle cdc always read the same SCN

[ighack]

flink 1.17.1
oracle-cdc 2.2.1

I find out the oracle-cdc always read the same SCN
like checkpoint1 is 123456, checkpoint2 is 123456.
so data is not syn

{"server":"oracle_logminer"},"sourceOffset":{"commit_scn":"19441613815452","transaction_id":null,"scn":"19441613815451"}

'debezium.database.tablename.case.insensitive' = 'false',
     'debezium.log.mining.strategy' = 'online_catalog',
     'debezium.log.mining.continuous.mine' = 'true',
     'scan.startup.mode' = 'initial',
     'debezium.table.include.list' = 'lmis.jc_hwzd',
     'debezium.log.mining.batch.size.default' = '13000',
     'debezium.log.mining.sleep.time.increment.ms' = '8500'

but ogg works.

after about 10 minutes cdc works

[ighack]

I tcpdump