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Re:Table sizing Q

From: <>
Date: Fri, 7 Jul 2000 09:09:48 -0400
Message-Id: <>

There are basically three other items you need:

  1. block size
  2. pctfree
  3. maxtrans

After you have these, then it's a matter of:

rows_per_block = block_size - ((block_size * pctfree) + (8 * maxtrans))/avg_row_length (sorry about the wrap)

After that:

table_size = ((#_of_rows_per_unit_time/rows_per_block) * block_size) +fudge_factor

In my case "fudge_factor" really comes from the area of the anatomy firmly in contact with chair cushion.

Dick Goulet

____________________Reply Separator____________________
Subject: Table sizing Q
Author: "Jack van Zanen" <> Date: 7/7/00 1:01 AM

Hi All,

I've done an analyze on our test environment of all tables and want to size my tables for production properly.
(Our developers do not provide the sizing specs.) My question is :
I have the average row length
I have the estimated nummer of records per year I have the nummer of blocks for a certain record set.

What more block/row overhead should I be adding to calculate the tablesize

TIA Jack

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Author: Jack van Zanen

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Received on Fri Jul 07 2000 - 08:09:48 CDT

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