Hi Hazel
There are two ways that you can suspend a batch job.
- go to setup > Search apex jobs and click abort on the desired batch job
2.
for(CronTrigger ct : [SELECT Id, CronJobDetail.Name, CronJobDetail.JobType
FROM CronTrigger
WHERE CronJobDetail.Name like ‘Work Order%’]){
// abort the job, try/catch because the job might not exist
// if it’s being aborted manually or from another execution
try{
system.abortJob(ct.id);
} catch (exception e) {}
}