You stop the Scheduler. Once the Scheduler has been stopped, scheduled DBM commands are no longer executed.
Concepts of the Database System, Automating Administration Tasks
You have the server authorization SchedulerMgm.
Call the Database Manager CLI, log on as operator OLEG with password MONDAY, connect to the database instance DEMODB, stop the Scheduler for the database instance:
>dbmcli -u OLEG,MONDAY -d DEMODB scheduler_stop