Diagnosis
Either there is no collector running and the shared memory is active, ora collector has never run before so that no shared memory has beencreated.

Procedure
Run a collector before the SAP system is started. The collector fromRelease 1.2A might run, but the system already has the status of 2.0A. Anew shared memory key is used for the new collector of Release 2.0A. Thenew collector (status 2.0A) must be started.