DBWR consumes a lot of CPU

Hi,

I have noticed in my 'top' that some process wakes up from time to time and consumes up to 20% of CPU, so I checked V$process, and it showed to me that it was DBWR. Can somebody explain what's goin gon behind this. Actually....
  oracle 640 1 8 Sep 07 ? 123:51 ora_dbwr_FOOT Why does this thing east so much CPU? That's in 36 hours.

Another DB which is somewhat less active has   oracle 843 1 0 Aug 18 ? 127:11 ora_dbw0_MEL2 and that's in more then 3 weeks

Andrey Dmitriev	 eFax: (978) 383-5892  Daytime: (917) 373-5417
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