RE: possible Bug in Oracle 9.2.0.2

I've no experience with Peoplesoft and Oracle 9, but ..

Try setting the following parameters

optimizer_features_enable = 8.1.6

As I recall this prevented Oracle from incorrectly tossing out some subselects. I'm not sure if it is even valid in 9iR2

_ignore_desc_in_index = TRUE

Not setting this can result in horrendous performance problems.

Ian MacGregor

-----Original Message-----
Sent: Wednesday, August 06, 2003 9:19 PM To: Multiple recipients of list ORACLE-L

Can you please list "select emplid, empl_rcd, effdt, effseq, empl_status from ps_job where emplid = '3442'"

At 03:34 PM 8/6/2003 -0800, you wrote:
>While I am waiting for oracle support to respond to my tar update (2nd
>callback) I am just wondering if anybody has found this problem.
>
>We have the following select query (from a peoplesoft implementation)
>
>SELECT a.emplid, a.effdt
>FROM PS_JOB A
>WHERE A.EFFDT = (SELECT MAX(A1.EFFDT) FROM PS_JOB A1 WHERE A.EMPLID =
>A1.EMPLID AND A.EMPL_RCD = A1.EMPL_RCD AND A1.EFFDT <= SYSDATE) AND
>A.EFFSEQ = (SELECT MAX(A2.EFFSEQ) FROM PS_JOB A2 WHERE A.EMPLID =
>A2.EMPLID AND A.EMPL_RCD = A2.EMPL_RCD AND A.EFFDT = A2.EFFDT) AND
>A.EMPL_STATUS = 'A' and a.emplid='3442'
>
>when we run the query we get one row back, but when we replace the
>field names with count(*), the resulting answer back is "2". We have
>tested it in 8.0.5.1.1 and we get the correct results, 1 row, and a
>count of 1.
>
>Darren
>
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http://www.centrexcc.com

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Author: MacGregor, Ian A.
  INET: ian_at_SLAC.Stanford.EDU

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