Hi Jens,
Use the below command
To enable log overwrite
dbmcli -d <DBNAME> -u SUPERDBA,<pwd> -c db_execute set log auto overwrite on
To disable log overwrite
dbmcli -d <DBNAME> -u SUPERDBA,<pwd> -c db_execute set log auto overwrite off
Regards,
Deepak Kori