Purge AsyncApexJob to delete already executed asynchronous Apex job records

Default Behavior: Automatic Purge After 7 Days

Salesforce automatically purges completed AsyncApexJob records 7 days after execution. In most orgs, this is sufficient to prevent record buildup. However, in orgs with a high volume of scheduled or batch Apex jobs, records may accumulate faster than the automatic purge can clear them.

How to Manually Purge AsyncApexJob Records (API v65 and Earlier)

Use the purgeOldAsyncJobs(Date) method to delete all completed async jobs with a CreatedDate before the specified date. Call this method from Execute Anonymous Apex in the Developer Console or from a scheduled Apex class.

How to Purge with an Upper Bound (API v66 and Later)

In API version 66.0 and later, use the method overload purgeOldAsyncJobs(Date, numOfJobs) to specify the maximum number of oldest completed async jobs to purge in a single operation. Providing an upper bound allows incremental deletion when you need to remove large volumes without hitting Apex governor limits in a single transaction.