AWD DMS setting CDC file size

Hi Everyone,

I configured an AWS DMS to migrate data from an AWS Managed Oracle database to a S3 Bucket.

The CDC has been creating file greater than 32MB. I was expecting to have file with at most 32MB due to the cdcMinFileSize. In my bucket there are files greater than 200MB.

cdcMaxBatchInterval - The maximum interval length condition, defined in seconds, to output a file to Amazon S3. The default value is 60 seconds.

cdcMinFileSize - The minimum file size condition, defined in KB, to output a file to Amazon S3. The default value is 32000 KB.

WriteBufferSize - The size, in KB, of the in-memory file write buffer used when generating .csv files on the local disk at the AWS DMS replication instance. The default value is 1000 KB.

I was wondering if my oracle database committed a large transaction that lead to this scenario. But during the processing on the Replication Instance would break the file into chunks to fit the 32MB?

Thanks in advance.