I suspect, as with most 'rules of thumb', that Kevin's
does not scale well.
|| -----Original Message-----
|| From: Henry Poras [mailto:[EMAIL PROTECTED]]
|| Sent: Monday, June 11, 2001 4:42 PM
|| To: Multiple recipients of list ORACLE-L
|| Subject: RE: Veritas Quick I/0 and Oracle/ Asycnchronous I/O
||
||
|| Let's see. What was that rule of thumb I heard from Kevin
|| Loney? I think it
|| was that each index slows down DML by a factor of 3 (at
|| least for batch jobs
|| where you have to worry about recursive SQL). So 23 indexes
|| would run about
|| 70 times slower than no indexes. Do I sense a hardware
|| throwing contest??
||
|| Henry
||
|| -----Original Message-----
|| Sent: Monday, June 11, 2001 4:01 PM
|| To: Multiple recipients of list ORACLE-L
||
||
|| On Monday 11 June 2001 09:06, Rachel Carmichael wrote:
|| > OLTP system, main order table had 23 indexes on it.
|| Because they wanted to
||
|| ?!?!?!
||
|| That's just nuts.
||
|| > be able to search by customer first name, customer last
|| name, recipient
|| > first name, recipient last name .... and had foreign keys
|| all over the
|| > place.
||
|| Sounds like Data Mart was a term they were unfamiliar with.
||
|| Jared
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