Here we would like to draw your attention to OS03 transaction code in SAP. As we know it is being used in the SAP BC-CCM (Use Subcomponents in Basis) component which is coming under BC module (BASIS).OS03 is a transaction code used for O/S Parameter changes in SAP.
It comes under the package SMOS.When we execute this transaction code, RSHOST02 is the normal standard SAP program that is being executed in background.
Transaction OS03 technical data table
|Purpose||O/S Parameter changes|