If dbcheck slow mode activated, XYmon becomes purple

Hi,

  I'm using dbcheck.pl to monitor my Oracle database but check them every 30min produce too much overload. I
used dhcheck slow mode (every 2h) but this a way too long for my Hobbit server : the db color switch to
purple. Is there a way to define the among of time before the server switch to purple? Any other ideas is
also welcome on dbcheck tweaks.

  Thanks by advance,

    LMJ