When debezium starts a task, how much should the batch size be set?

What Debezium connector do you use and what version?

<1.7.2.final>

What is the connector configuration?

<oracle>

Hello, I now monitor Oracle data. The data volume of small table is about 5 million, the data volume of medium table is about 20 million, the data volume of large table is about 50 million, and the total size of data is about 60g. My question is: when I start a task, how should I set the size of "max.batch.size" in debezium configuration file, and is there a rough calculation method