RE: different plan with insert/select
Date: Wed, 24 Jun 2020 08:51:05 +0000
Message-ID: <19632_1592988685_5EF3140D_19632_5236_1_45617ca2fc3647c8b720a09a76839454_at_vontobel.com>
It’s 19.7
Here’s the plan with select only:
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 47802 | 30M| | 233K (2)| 00:00:10 |
| 1 | COUNT | | | | | | |
| 2 | MERGE JOIN OUTER | | 47802 | 30M| | 233K (2)| 00:00:10 |
|* 3 | HASH JOIN RIGHT OUTER | | 47802 | 29M| | 42098 (5)| 00:00:02 |
| 4 | TABLE ACCESS FULL | ALL_DIL_BOERSENPLATZ | 2348 | 96268 | | 8 (0)| 00:00:01 |
|* 5 | HASH JOIN OUTER | | 47802 | 28M| 17M| 42088 (5)| 00:00:02 |
|* 6 | HASH JOIN RIGHT OUTER | | 29913 | 17M| 5752K| 16418 (6)| 00:00:01 |
| 7 | TABLE ACCESS FULL | ALL_DIL_GVF | 256K| 2750K| | 1424 (4)| 00:00:01 |
|* 8 | HASH JOIN | | 29913 | 16M| | 14252 (6)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | PK_ICR_MIT_BOOKKIND | 220 | 4400 | | 3 (0)| 00:00:01 |
|* 10 | TABLE ACCESS FULL | ICR_WRK_BEWEGUNG_FKR | 110K| 60M| | 14246 (6)| 00:00:01 |
| 11 | VIEW | | 5154K| 63M| | 20934 (5)| 00:00:01 |
|* 12 | HASH JOIN RIGHT OUTER | | 5154K| 280M| 8656K| 20934 (5)| 00:00:01 |
|* 13 | TABLE ACCESS FULL | ALL_DIL_BEWEGUNG | 276K| 5406K| | 5963 (5)| 00:00:01 |
|* 14 | INDEX FAST FULL SCAN | ALL_DIL_STEX_ORDER_LINK_PK | 5419K| 191M| | 6341 (6)| 00:00:01 |
| 15 | BUFFER SORT | | 1 | 13 | | 233K (2)| 00:00:10 |
| 16 | VIEW | VW_LAT_AEC4E3BF | 1 | 13 | | 4 (0)| 00:00:01 |
| 17 | NESTED LOOPS | | 1 | 28 | | 4 (0)| 00:00:01 |
| 18 | NESTED LOOPS | | 1 | 28 | | 4 (0)| 00:00:01 |
| 19 | TABLE ACCESS BY INDEX ROWID| ALL_DIL_WAEHRUNG_KURS | 1 | 14 | | 2 (0)| 00:00:01 |
|* 20 | INDEX RANGE SCAN | PK_ALL_DIL_WAEHRUNG_KURS | 1 | | | 1 (0)| 00:00:01 |
|* 21 | INDEX RANGE SCAN | PK_ALL_DIL_WAEHRUNG_KURS | 1 | | | 1 (0)| 00:00:01 |
|* 22 | TABLE ACCESS BY INDEX ROWID | ALL_DIL_WAEHRUNG_KURS | 1 | 14 | | 2 (0)| 00:00:01 |
And with insert:
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time | -------------------------------------------------------------------------------------------------------------------------- | 0 | INSERT STATEMENT | | 154G| 92T| | 390M (5)| 04:14:24 | | 1 | LOAD TABLE CONVENTIONAL | ICR_DAT_BEWEGUNG_FKR | | | | | | | 2 | COUNT | | | | | | | | 3 | MERGE JOIN OUTER | | 154G| 92T| | 390M (5)| 04:14:24 | | 4 | MERGE JOIN OUTER | | 29913 | 18M| | 136K (1)| 00:00:06 |
|* 5 | HASH JOIN RIGHT OUTER | | 29913 | 18M| | 16427 (6)| 00:00:01 |
| 6 | TABLE ACCESS FULL | ALL_DIL_BOERSENPLATZ | 2348 | 96268 | | 8 (0)| 00:00:01 |
|* 7 | HASH JOIN RIGHT OUTER | | 29913 | 17M| 5752K| 16418 (6)| 00:00:01 |
| 8 | TABLE ACCESS FULL | ALL_DIL_GVF | 256K| 2750K| | 1424 (4)| 00:00:01 |
|* 9 | HASH JOIN | | 29913 | 16M| | 14252 (6)| 00:00:01 |
|* 10 | INDEX RANGE SCAN | PK_ICR_MIT_BOOKKIND | 220 | 4400 | | 3 (0)| 00:00:01 |
|* 11 | TABLE ACCESS FULL | ICR_WRK_BEWEGUNG_FKR | 110K| 60M| | 14246 (6)| 00:00:01 |
| 12 | BUFFER SORT | | 1 | 13 | | 136K (1)| 00:00:06 | | 13 | VIEW | VW_LAT_7AEC37A2 | 1 | 13 | | 4 (0)| 00:00:01 | | 14 | NESTED LOOPS | | 1 | 28 | | 4 (0)| 00:00:01 | | 15 | NESTED LOOPS | | 1 | 28 | | 4 (0)| 00:00:01 | | 16 | TABLE ACCESS BY INDEX ROWID| ALL_DIL_WAEHRUNG_KURS | 1 | 14 | | 2 (0)| 00:00:01 |
|* 17 | INDEX RANGE SCAN | PK_ALL_DIL_WAEHRUNG_KURS | 1 | | | 1 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | PK_ALL_DIL_WAEHRUNG_KURS | 1 | | | 1 (0)| 00:00:01 |
|* 19 | TABLE ACCESS BY INDEX ROWID | ALL_DIL_WAEHRUNG_KURS | 1 | 14 | | 2 (0)| 00:00:01 |
| 20 | BUFFER SORT | | 5154K| | | 390M (5)| 04:14:24 | | 21 | VIEW | VW_LAT_7AEC37A2 | 5154K| | | 13058 (5)| 00:00:01 |
|* 22 | FILTER | | | | | | |
|* 23 | HASH JOIN RIGHT OUTER | | 5154K| 280M| 8656K| 13058 (5)| 00:00:01 |
|* 24 | TABLE ACCESS FULL | ALL_DIL_BEWEGUNG | 276K| 5406K| | 5963 (5)| 00:00:01 |
|* 25 | INDEX RANGE SCAN | ALL_DIL_STEX_ORDER_LINK_PK | 4410K| 155M| | 3 (0)| 00:00:01 |
--------------------------------------------------------------------------------------------------------------------------
Thanks,
Nenad
From: oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> On Behalf Of Jonathan Lewis
Sent: Mittwoch, 24. Juni 2020 10:47
To: ORACLE-L (oracle-l_at_freelists.org) <oracle-l_at_freelists.org>
Subject: Re: different plan with insert/select
There's always the distributed query problem. I've probably got a couple of other cases logged somewhere - will check later and follow up
Which version of Oracle ?
Regards
Jonathan Lewis
On Wed, Jun 24, 2020 at 8:53 AM Noveljic Nenad <nenad.noveljic_at_vontobel.com<mailto:nenad.noveljic_at_vontobel.com>> wrote: I’m getting a different execution plan for select if it runs in insert/select statement. It’s the same select - embedded in an insert statement.
There are much less join order permutations with insert/select than with select. The initial join order 1 is different.
I’m working on finding out what exactly triggers the different behavior. The original statement is rather complex, but I'm working on a simple, generic test case.
Is anybody aware of possible causes?
Best regards,
Nenad
https://nenadnoveljic.com/blog
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