Query on batch jobs with overlapping time during execution time

Dear experts,

This post is related to a task in SAP SCM EM module and currently I am working on an archival activity that comprises of two tasks to be done through 2 different programs (scheduled through batch jobs)

Job 1 is created to deactivate particular Event Handler records (changing a status field on the EH record)

Job 2 (archival job) runs daily and writes deactivated EHs to a local file and subsequently deletes this from SAP server.

Archival job takes an average of 30 hrs to complete .

Therefore my query is on how to schedule Job1, as these seem to be dependent and might impact each other in unexpected manner.

Please advise.

Thanks & regards,

Mohan