Checking Whether the Coverage Analyzer Is Active 
Enter transaction SCOV or, from the SAP Easy Access screen, choose
The start screen shows whether the Coverage Analyzer is active in your system.

Status of the Coverage Analyzer
The illustration shows the following:
Main Switch
The green (On) icon means that the Coverage Analyzer is active in the system (the instrumentation is writing data to shared memory). .
Data Collectn
The green (On) icon means that data is being gathered from shared memory and moved to the database on the local application server, the one on which you are logged in.
Both the Main Switch and Data Collectn must be green (On), or you will not be able to collect any code coverage statistics on the application server on which you are logged on.
Record History
The green (On) icon means that the batch job that aggregates code coverage data in histories (for Quality Assurance and trend analysis) is active. Histories are needed by the Global Display in the Coverage Analyzer. They are not required for using the Detailed Display.
A yellow icon means that the respective Coverage Analyzer feature is starting.
A red icon means that Coverage Analyzer feature is deactivated.
Here is how to activate or deactivate the Coverage Analyzer.