Diagnosis
The specified area in the table MONI could not be deleted.

System Response
This area of the table MONI contains incompatible data structures, thatneed to be deleted before going live. If the data is not deleted, theR/3 System will not be able to store any workload statistics or tableaccess statistics in the database. In addition, the collection programsrun as part of the job COLLECTOR_FOR_PERFORMANCEMONITOR orSAP_COLLECTOR_FOR_PERFMONITOR, will usually result in hourly shortdumps.

Procedure
You can delete the data manually using the Workload Monitor(Transaction ST03). Choose "Goto -> Performance database -> Contents ofdatabase" and select the pushbutton "Del. group". Enter the ID of thearea not deleted and confirm.