I read that the select runs just as fast if not faster when compared to
uncompressed tables.
Goulet, Dick wrote:
Yeah, but what's the penalty during reads???
Dick Goulet Senior Oracle DBA Oracle Certified 8i DBA
-----Original Message----- From: Khedr, Waleed [mailto:Waleed.Khedr@xxxxxxx] Sent: Friday, March 19, 2004 3:48 PM To: 'oracle-l@xxxxxxxxxxxxx' Subject: RE: Table compression
I use it, works great, 60% savings.
Once the table/partition gets flagged "compress", any direct load will be compressed.
You will get ora-600 if trying to do parallel direct load.
Also can't add a column to a compressed table.
Waleed
-----Original Message----- From: LeRoy Kemnitz [mailto:lkemnitz@xxxxxxxx] Sent: Friday, March 19, 2004 3:41 PM To: Oracle List Subject: Table compression
I am looking into doing some table compression on my warehouse database to free up some space on the os. I am running 9.2.0.4 on Unix 5.1. The compression is about 2.5:1 on my tables. The documentation says the bulk insert time will be doubled but the single inserts, updates, and deletes are going to be a wash. Does anyone use compression? Are there any problems you notice in the use of it? I have also read that the table will need to be re-compressed after the bulk inserts. Any alternative ideas about getting this done?
Thanks in advance,
LeRoy
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-- LeRoy Kemnitz UW System Administration Database Administrator 780 Regent Street, #246 Madison, WI 53714 Phone: (608) 265 -5775 Fax: (608) 265 - 2090
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