My enterprise manager instance on Oracle 10.2.0.4 throws the following alert on a regular basis:
Name=db4 Type=Host Host=db4 Metric=Disk Utilization (%) Disk Device=sd1 Timestamp=Oct 4, 2011 2:15:50 PM GMT Severity=Critical Message=Disk Utilization for sd1 is 96.12% Rule Name=Host Availability and Critical States Rule Owner=SYSMAN
The DB is hosted on Solaris 10. The datafiles are stored on /home and the binaries on /opt. And there is free space on both volumes...
-bash-3.00$ df -h Filesystem size used avail capacity Mounted on /dev/dsk/c0t0d0s0 9.9G 4.3G 5.4G 45% / /devices 0K 0K 0K 0% /devices ctfs 0K 0K 0K 0% /system/contract proc 0K 0K 0K 0% /proc mnttab 0K 0K 0K 0% /etc/mnttab swap 38G 968K 38G 1% /etc/svc/volatile objfs 0K 0K 0K 0% /system/object sharefs 0K 0K 0K 0% /etc/dfs/sharetab /usr/lib/libc/libc_hwcap1.so.1 9.9G 4.3G 5.4G 45% /lib/libc.so.1 fd 0K 0K 0K 0% /dev/fd /dev/dsk/c0t0d0s3 20G 355M 19G 2% /var swap 38G 152K 38G 1% /tmp swap 38G 28K 38G 1% /var/run /dev/dsk/c0t0d0s4 20G 13G 6.8G 66% /opt /dev/dsk/c0t1d0s0 825G 611G 205G 75% /home
Is this alert from EM a false positive ? A bug that I should patch ? The really weird thing is that I have another database running on the same server, with EM installed, and that secondary EM doesn't throw the error.