Here we would like to draw your attention to OACH transaction code in SAP. As we know it is being used in the SAP BC-SRV (Basis Services / Communication Interfaces in Basis) component which is coming under BC module (BASIS).OACH is a transaction code used for SAP ArchiveLink: Link Check in SAP.
It comes under the package SAOP.When we execute this transaction code, OACHECK is the normal standard SAP program that is being executed in background.
Transaction OACH technical data table
|Purpose||SAP ArchiveLink: Link Check|