Janet, This is the formula that I use to get projected storage needs for a table or index. It takes a lot of calculations and good faith estimates from the developers but the answer is pretty close. ******************************* TO DETERMINE THE SIZE OF A TABLE STORAGE
step 1. NUMBER OF ROWS IN TABLE. --------------- step 2. NUMBER OF ROWS IN BLOCK. NUMBER =COLUMN SIZE. 21 (maximum) CHAR = COLUMN SIZE VARCHAR = COLUMN SIZE DATE = 7 Z=3+(SUM OF COLUMN SIZES)+(# OF COLUMNS < 250)+(3* # OF COLUMNS > 250) X= DBBLK SIZE / Z --------------------------------------------- Y=DBBLK-(%FREE(DBBLK-(52+4(X))) Y>=X*Z ADJ X TO GET "TRUE" --------------------- step 3. TOTAL BLOCKS NEEDED. TOT BLOCKS=ROWS IN TABLE/ROWS PER BLOCK TABLE SIZE =DBBLK SIZE * TOT BLOCKS / 1024 GIVES TABLE SIZE IN K. ------------- ***************************************** I usully try to plan a table for 2 years expected capacity. ROR m���m >>> [EMAIL PROTECTED] 03/11/02 04:08PM >>> Hi, Does anyone know some scripts that can calculate table/index size, given the data block size, estimated number of rows, and table row size or index space per row? Acutally how to get table row size and index space per row? Thank you! Janet __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Janet Linsy INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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: Ron Rogers INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
