Hi Kemal,
The problem you are referring to is not the ICM cache. Your error occurred 2 minutes before...
See your portal log
"exception when calling ObjectFactory for com.sap.pct.erp.mss.reminderofdates"
Reinstall your ESS/MSS business packages please and retry.
(see also: ESS iview preview error in Portal 7.3 | SCN)
Cheers,
Noël
