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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Tuning Matter ==> Parameter PCT_USED in a Table
Hi Bambang,
Analyze the table and you'll find the average row length in USER_TABLES.AVG_ROW_LEN. Subtract 90 bytes from the block size before expressing that as a percentage and round it up. Also, the formula should be PCT_USED = 100 - (PCT_FREE + 1 row). There are scripts on the Ixora web site that do this sort of stuff.
@ Regards, @ Steve Adams @ http://www.ixora.com.au/ @ http://www.christianity.net.au/
-----Original Message-----
Sent: Friday, 23 March 2001 11:46
To: Multiple recipients of list ORACLE-L
Dear Listers,
I've download a presentation talking about Calculating PCT_USED .
the formula is quite simple :
PCT_USED + PCT_FREE < 100
PCT_USED = PCT_FREE + 1 row size
but I have no idea to calculate the size of 1 row in a table .
is there anyone who knows to calculate it ? or any alternative formula to calculate PCT_USED ?
Thanks a lot in advance : )
=bambang=
<> Bambang Setiawan <>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Bambang Setiawan INET: Bambang.Setiawan_at_Sidola.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Steve Adams INET: steve.adams_at_ixora.com.au Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Thu Mar 22 2001 - 21:07:16 CST
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