Some consideration too:
db_block_size > 8K (this has to be set when the database was created)
 
You need to have this setup to:
db_file_multiblock_read_count     (as I high as Possible)
bitmap_merge_area_size
create_bitmap_area_size
hash_area_size
sort_area_size
 
Your temporary tablespace: initial = next = multiple of sort_area_size (i.e: 2* 100MB if your sort_area_size is 100 MB)
 
Regis
 
-----Original Message-----
From: Bart Kersteter [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 25, 2003 3:39 PM
To: Multiple recipients of list ORACLE-L
Subject: SORT_AREA_SIZE question

Hello,
 
I joined this list last week, so I apologize in advance if I'm asking a question that has previously been answered.
 
I am responsible for a reporting database/data mart that is approximately 175 GB.  Our main fact table ranges from 1-14 GB depending upon how far along we are into our financial year.  I have large reports that run full table scans on this table daily.  In an effort to keep as much of the sorting in memory as possible I have specified SORT_AREA_SIZE to be 100MB.  Some of the tuning books I am reading now are making me second-guess myself and I am wondering if this is overkill.
 
Can anyone provide some advice on how large they are setting their SORT_AREA_SIZE values for their DSS systems? 
 
Thanks in advance,
 
Bart
 

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