Can you try these steps:
1. Ensure that the job COLLECTOR_FOR_PERFORMANCEMONITOR executes the report RSCOLL00 hourly. Furthermore, the report RSSTAT80 should be executed every hour. You achieve this by maintaining the table TCOLL with transaction SM31. Enter "X" in every hour for the report RSSTAT80 (column "Time of day").
2. The report RSSTAT80 should be executed every hour. You achieve this by maintaining the table TCOLL with transaction SM31. Enter "X" in every hour for the report RSSTAT80 (column "Time of day"). You should then increase the maximum number of statistics records read in each run of RSSTAT80. You can set this value with transaction ST03, Goto -> Parameters -> Performance database. Press "Modify parameters" and enter at least 10,000 for the value "Max. number of records cumulated per call". You must then save the settings.
3. Using transaction ST03, Goto -> Parameters -> Performance database, pushbutton "Modify parameters", increase the value of "Max. number of records cumulated per call" to at least 10,000 and save the change. If this or a larger value is already set, please proceed as in point 2.
Try these steps, hope everything will work fine. Reply me whatever is the result.
Thanks