When i use Debezium and wal2json it cause a problem

[chzhty001]

The error info:
Caused by: org.postgresql.util.PSQLException: ERROR: out of memeory
Detail: Cannot enlarge string bugger containing 1073741788 bytes by 217 more bytes.
Where: slot "debezium", output plugin "wal2json", in the change callback, associated LSN xxxxxx

[eulerto]

You have a big transaction. format version 1 allocates one string for the whole transaction. The maximum size for format version 1 is 1 GB (this is a PostgreSQL infrastructure limitation). You have 3 options:

• use smaller transactions and keep format version 1;
• use format version 1 and enable write-in-chunks;
• user format version 2.

I recommend that you adopt format version 2. I will be the default in future versions.

[chzhty001]

• format version 2.

how can i use format version 2? is it a config item?

[eulerto]

Parameter format-version. There is an example in the README.