[Xymon] Xymon disk icon shows red

I have an Oracle DB server pctydb01prod, /u02 file system reached 98% full and shows red icon.

I was told by DBA, this file system should not show red alert until it reaches 99% full.

So I edit ~xymon/server/etc/analysis.cfg, and edited the following:

HOST=pctydb01prod

    DISK    /u02 94 99

    DISK    * 90 95

I re-started Xymon daemon on the server, but the red icon still doesn't go away:

I also tried to use IGNORE option:

HOST=pctydb01prod

    DISK    /u02  IGNORE

Still the same result: red icon trigger the /u02 over 95% still don't go away.

The file system is 98% full:

[root at pctydb01prod etc]# df -h /u02

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/VG00-LogVol01

                  209G  193G  5.1G  98% /u02

What did I missed? Could anyone advice?

Thanks in advance!

Kingston Peng