RE: Export question.

From: Robertson Lee - lerobe <lerobe_at_acxiom.co.uk>
Date: Wed, 16 May 2001 00:08:08 -0700
Message-ID: <F001.0030478A.20010515235542@fatcity.com>

Well whaddya know...........

Analyzed the table with estimates statistics (sampled 30 percent) and bingo. My table is now reporting that it is 4.4Gb and not 330Mb. Avg row length went from 6 bytes to 81. On a 50+ million row table that made some difference to the calculation.

Many thanks Anita (and to all who replied). Yet another reason to get off this crappy bug ridden 8.0.5.0.0

Lee

-----Original Message-----
Sent: 15 May 2001 16:06
To: Multiple recipients of list ORACLE-L

Lee,

Definitely sounds like bug 766095. It isn't listed in the patchset readme file for 8.0.5.2.1 so it doesn't appear to be fixed in 8.0.5, although there might be a patchset exception for your platform (check with support).

The workaround is to estimate statistics using a percentage which brings the total amount of data analyzed under 4GB to avoid the overflow issue which results in the incorrect value, keeping in mind that the value produced by estimating may not be 100% accurate either.

HTH,

Anita

Lee,

HTH,

Anita
- Robertson Lee - lerobe <lerobe_at_acxiom.co.uk> wrote:
  > OK here goes and thanks for the response
  >
  > Definitely one table and "from the top" :-)
  >
  > DB Block size = 8192
  > Avg. Row Size = 6
  > Num Rows = 57351031
  > Pct free = 0
  > Pct Used = 40
  > Table definition (column names removed) =
  >
  > Type
  > -------- ----
  > NOT NULL NUMBER(9)
  > NOT NULL NUMBER(9)
  > NOT NULL NUMBER(9)
  > NOT NULL NUMBER(9)
  > NUMBER(9)
  > CHAR(2)
  > CHAR(3)
  > CHAR(4)
  > VARCHAR2(100)
  > VARCHAR2(60)
  > VARCHAR2(50)
  > VARCHAR2(60)
  > VARCHAR2(7)
  > NUMBER(6)
  > NUMBER(6)
  > NUMBER(9)
  > DATE
  > VARCHAR2(50)
  >
  > A - ha I think the penny drops - how on earth could
  > this be right - average
  > row length of 6 with a table definition like this.
  > Is this the problem. The
  > average row length must be wrong, yet the table was
  > definitely analyzed with
  > compute statistics.!!!!
  >
  >
  > Lee Robertson
  >
  >
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  > Author: Robertson Lee - lerobe
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-- 
Author: Robertson Lee - lerobe
  INET: lerobe_at_acxiom.co.uk

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Received on Wed May 16 2001 - 02:08:08 CDT