Two prerequisites must be fulfilled so that data can be collected in the Central Performance History (CPH):
If you have made the assignments yourself (see Assigning Performance Values to Collection and Reorganization Schemata), the necessary job is automatically scheduled. In this case, you do not need to explicitly activate the CPH.
However, if you are simply want to use the collection and reorganization schemata delivered by SAP and the standard assignments of selected MTE classes to these schemata (see The Delivered Settings of the Central Performance History), you must activate the CPH yourself. In this case, the jobs are not automatically scheduled without confirmation so that no data is collected in the CPH without your knowledge and agreement.
You can also use the procedure if you have descheduled the collection and reorganization jobs (for example, during a maintenance period), and now want to reactivate these jobs
Central Performance History of the Monitoring Architecture start page