Re: 9i on RHAS3

Rich, I don't have AS 3.0, I'm using regular RH 9 and RH 8 based worsktations, with gcc 3.2 (gcc-gnat-3.2.2-5,gcc-3.2.2-5) and curiously enough, the installation worked right out of the box, with a quirk with linking context ("undefined symbol"), but I was able to ignore the error and proceed. Oracle works well, no complaints so far. There is a thing that confuses me, but it's generic. I tried on a Solaris8 box and the result was the same (9.2.0.4). Here is what confuses me. Here are two execution plans, for the same query (autotrace on explain, timing on). More expensive plan takes less time. Shouldn't it be the other way round? Elapsed: 00:00:00.00

Execution Plan

   0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=7 Card=14 Bytes=77
          0)
 
   1    0   NESTED LOOPS (Cost=7 Card=14 Bytes=770)
   2    1     TABLE ACCESS (BY INDEX ROWID) OF 'CP_ACTIONS' (Cost=2 Ca
          rd=14 Bytes=588)
 
   3    2       INDEX (RANGE SCAN) OF 'CP_ACTIONS_EFF_I' (NON-UNIQUE)
          (Cost=2 Card=14)
 
   4    1     TABLE ACCESS (BY INDEX ROWID) OF 'CHG_TKR' (Cost=2 Card=
          1 Bytes=13)
 
   5    4       INDEX (UNIQUE SCAN) OF 'SYS_C004800' (UNIQUE) (Cost=1
          Card=1)
 
 

Elapsed: 00:00:00.01  

Execution Plan

   0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=6 Card=14 Bytes=77
          0)
 
   1    0   HASH JOIN (Cost=6 Card=14 Bytes=770)
   2    1     TABLE ACCESS (BY INDEX ROWID) OF 'CP_ACTIONS' (Cost=2 Ca
          rd=14 Bytes=588)
 
   3    2       INDEX (RANGE SCAN) OF 'CP_ACTIONS_EFF_I' (NON-UNIQUE)
          (Cost=2 Card=14)
 
   4    1     TABLE ACCESS (FULL) OF 'CHG_TKR' (Cost=4 Card=1602 Bytes
          =20826)

> Has anyone tried 9i on RHAS3 yet? Metalink 252217.1 and the venerable
> Werner Puschitz's site http://www.puschitz.com have many icky hacks that
> seem to have to be done, including temporarily dropping gcc323 to the highly
> unstable and buggy v2.96 (even GNU says not to use it! -- it's not even
> listed as a release on their website).
>
> I'm guessing that Mr. Puschitz isn't on this list? Looks like he knows the
> Oracle install on RedHat quite well.
>
> How's about it, Mladen? I'm not willing to scrap my Gentoo box to test it.
> :)
>
>
> Rich
>
> Rich Jesse System/Database Administrator
> rjesse_at_qtiworld.com Quad/Tech Inc, Sussex, WI USA
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> Author: Jesse, Rich
> INET: Rich.Jesse_at_qtiworld.com
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Mladen Gogala
Oracle DBA

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Author: Mladen Gogala
  INET: mladen_at_wangtrading.com

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