Database Activities 
The Statistics user menu of the Database Assistant shows you, among other things, a display of the database activities of the last four weeks.
Prerequisites
The display is only possible for the basis database of the SAP system. These values are gathered from the last time database monitoring was started.
Procedure
In the Database Assistant, choose 
Statistics 
DB Activities 
.
or
Open the DBA Cockpit (transaction code DBACOCKPIT) and select Space DB Activities .
Result
You receive information about database activities for the previous four weeks. You can set this output time frame. A collector logs the database activities of the database once a day, so that you can monitor activities over a specified period.
You can choose from the following views:
SQL Commands: Total number of SQL statements, commits, rollbacks, prepares
Cache Activities: Cache hit rates, number of reads and writes to the database
Other Activities: Number of table scans, log activities, lock information
Deleting Statistics Data
Deleting statistics data can be done manually by specifying a time period/date or automatically by specifying a time period (in weeks).