Did the consultant also tell you to dim the light in the computer?
Without knowing more detail about your system, these settings look rather suspicious. It looks more like a consultant showing of his _ parameter knowledge (or actually lack of it).
If I had to interpret these recommendations, I would say that you have a system that suffers from many hard/soft parsers (library cache and shared pool latch contention) and some DBWR performance problems. But again without more data (versions, stats etc) I wouldn't be able to tell for sure.
I have been suggested by some Oracle Consultant to set 20 Database Writer in a 12 CPU HP-UX Server.
Does anyone know what are the side effects of having excessive DBWR? I detected a higher CPU usage (between, 1% to 2%) not sure if its due to the number of Database Writer. Because when I increased the number of DBWR at init.ora I also changed these parameters
_row_cache_cursors = 60 _kgl_latch_count = 59 _kghdsidx_count = 4 statistics_level = basic
again suugested by this guy.
-- Anjo Kolk Owner and Founder OraPerf Projects tel: +31-577-712000 mob: +31-6-55340888