Re: explain plan conundrum

i figured it out. I use the ordered hint. Its actually a 3 table join and I took that out for simplicity in my question. I drove off a more selective join. Got it to run in 1 minute.

i almost never have to use ordered hint
>
> From: <ryan_oracle_at_cox.net>
> Date: 2003/11/04 Tue PM 01:34:26 EST
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: explain plan conundrum
>
> I cant sql trace it now. I hae run statspack. this query is running now and I dont want to run another copy with a trace on until this finishes, since I dont want to suck up resources. Im at a loss as to where the 20 billion rows comes from in this explain plan? Everything including the indexes are analyzed.
>
> when the two tables involved have 36k and 5k rows involved.
> looks like some form of cartesian join, but its not showing up in the plan. The two tables are joined by a column.
>
> any place to look on this? I know I need the 10046 trace, but I cant get that yet and it make take 12 hours to get it after this runs.
>
> select col1,
> col2,
> col3
> from tab1
> tab2
> where tab1.col1 = tab2.col2;
>
>
> Operation Object Name Rows Bytes Cost Object Node In/Out PStart PStop
>
> SELECT STATEMENT Optimizer Mode=CHOOSE 1 G 237
> HASH JOIN 1 G 20G 237
> INDEX FAST FULL SCAN PK1 5 K 11 K 3
> TABLE ACCESS FULL TABLE2 366 K 4 M 231
>
>
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> Author: <ryan_oracle_at_cox.net
> INET: ryan_oracle_at_cox.net
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