In My RAC 11.2.0.2.2, I have the following warnings in the dba_outstanding_alerts, How to clean them? I don't have Diagnostic Pack licensed for this environment; it's a test environment; I just have a basic license REASON ---------------------------------------------------------------------------------------------------- METRIC_VALUE MESSAGE_TYPE TO_CHAR(CREATION_TIME,'DD-MON ------------ ------------ ----------------------------- HOST_ID ---------------------------------------------------------------------------------------------------- Metrics "Database Time Spent Waiting (%)" is at 34.11247 *for* event *class* "Concurrency" 34.1124716 Warning 15-JUL-2011 17:49:32 db03 Metrics "Database Time Spent Waiting (%)" is at 76.9712 *for* event *class* "Other" 76.9712048 Warning 15-JUL-2011 17:53:00 db02