DATABASE MANAGER

An apparatus stores a schedule indicating when a job is scheduled to execute. The apparatus receives a request to execute a first job and determines from the schedule that a second job is scheduled to execute during the execution of the first job. The apparatus estimates a first amount of memory to be consumed by the first job and a second amount of memory to be consumed by the second job, and determines whether a sum of the first amount and the second amount exceeds an amount of free memory. The apparatus determines a table that the first job accesses, and determines whether the table is accessed by the second job. The apparatus communicates a message indicating a period of time to wait before executing the first job if the sum exceeds the amount of free memory or if the table is accessed during by the second job.