I have received this kind of alerts for two days in a row from Oracle 11gR2 on Windows Server 2008R2:
Metric=Disk Device Busy (%)
Disk Device=2 R:
Timestamp=Mar 11, 2015 10:38:09 PM EDT
Message=Disk Utilization for 2 R: is 98.74%, crossed warning (80) or critical (95) threshold.
Notification Rule Name=Host Availability and Critical States
Notification Rule Owner=SYSMAN
What can I do to resolve this? How dangerous is this kind of critical error?