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Oracle going seriously wrong on a "simple" sql statement

Take a look at this statement:

INSERT INTO SAVEDLISTWIDGET(SAVEDLISTID, WIDGETID) SELECT 2 AS SAVEDLISTID,A.WIDGETID FROM  WIDGET A  WHERE (A.LOCATIONID IN (2,3,623,22,595,578,579,628,589,580,581,582,590,23,583,834,594,34,35,36,37,479,38,39,40,41,42,43,44,521,45,512,46,47,501,48,49,50,51,52,53,54,55,56,57,482,504,508,520,59,60,61,62,63,64,499,500,66,67,68,69,481,667,668,626,532,4,596,74,75,77,78,79,489,517,80,584,490,81,476,82,83,84,85,86,87,480,88,89,506,90,477,91,92,93,94,485,95,491,669,6,7,96,492,670,671,672,97,98,99,100,519,101,102,103,104,593,106,107,673,674,675,478,514,510,507,676,677,678,679,680,681,682,683,684,685,686,687,108,688,689,591,585,586,109,110,523,111,511,112,487,113,114,649,115,116,117,118,119,120,121,122,123,124,518,125,126,691,127,692,693,694,695,128,70,696,697,698,130,483,488,831,505,625,587,513,131,522,132,699,700,701,133,134,524,135,136,137,138,139,503,140,141,142,143,144,145,146,502,147,703,148,704,705,706,707,708,709,710,711,712,713,714,715,716,717,149,150,151,152,486,718,153,154,155,156,157,158,159,719,588,160,161,48
4,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,720,177,178,179,627,533,13,15,629,187,721,460,188,189,722,190,191,192,193,194,195,538,196,197,198,451,199,200,723,724,456,725,539,423,726,727,201,729,202,203,204,205,730,731,732,733,540,734,735,736,206,207,424,208,209,210,737,541,738,739,425,740,741,742,211,212,426,743,744,427,428,458,213,542,214,215,745,216,746,543,747,544,531,572,421,573,571,16,574,562,430,224,225,226,227,228,181,229,549,230,563,749,231,232,233,234,235,236,237,238,431,565,239,240,750,751,241,655,752,753,754,432,243,436,756,244,245,545,246,433,526,247,434,248,757,249,250,251,546,758,252,253,254,759,255,256,257,453,258,547,259,260,261,262,435,263,761,762,763,764,765,766,767,768,769,548,770,575,17,564,264,561,272,273,274,275,276,438,277,439,440,441,442,443,278,550,279,280,281,282,283,284,285,558,771,286,551,287,444,288,289,290,291,292,772,773,293,774,775,294,295,296,552,297,776,446,298,299,300,447,777,778,301,302,452,779,780,781,782,303,559,304,553,305,527,783,306,784,528,785,307,308
,180,786,787,554,309,310,311,312,788,313,314,448,315,789,790,316,555,317,318,449,319,320,321,791,792,793,556,557,322,794,323,324,450,14,525,622,643,795,796,330,331,332,333,335,336,797,798,799,535,801,802,803,804,805,806,807,808,800,529,809,810,811,812,813,814,815,816,536,817,818,819,820,821,822,823,824,825,560,826,827,828,569,568,566,577,420,461,570,567,18,19,644,611,364,365,366,367,368,462,369,370,371,612,463,372,373,374,375,376,377,378,613,379,380,381,382,383,384,385,386,387,388,389,390,464,391,392,393,465,394,395,396,397,398,399,400,401,614,466,402,403,404,467,615,405,406,616,407,408,409,410,411,412,617,413,414,415,530,20,618,337,338,339,340,341,342,343,468,344,345,346,347,472,624,469,470,473,474,475,471,21,645,597,598,599,600,601,602,603,604,605,606,607,608,609,610,619) AND A.CATEGORYID IN (9,59,66,47,52,68,61,56,49,50,71,51,67,76,64,70,55,58,63,75,62,72,65,57)) AND A.BUDGETID = 1

After about 12 minutes this thing raises

ORA-03113: end-of-file on communication channel - OraOLEDB

SavedListWidget contains 8844 rows, and is Pkeyed on SavedListID,WidgetID
Widget contains 2187 rows
Location contains 715 rows
Category contains 55 rows

Database is fully normalised with LocationID and CategoryID indexed and the FK/PK relationships in place

There's no locking issues, I restarted the Oracle box and ran it from a simple vb program (.net and vb6 drivers give same error).

On smaller volumes of LocationIDs the statement works fine.

Oracle version is 9.2. Note some numbers might've got split in the paste, but it is syntactically correct. This is the cause of my earlier and still open thread: https://www.experts-exchange.com/questions/22022344/ORA-03114-NOT-CONNECTED-TO-ORACLE.html

Please let me know if you have any ideas on this, and whether any settings can be put in place to fix it without changing the sql.

thanks
SOLUTION
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Guy Hengel [angelIII / a3]
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ASKER

I will try that. Thanks

But I'm also really interested in whether we can get this sql statement working as it is, by changing settings, oledb parameters, etc.

We can change oracle settings but the sql is coded into an enterprise product and to rebuild, retest, redeploy the product would be a lot of work and expense.

And if I may just say this..., if the statement was outside of oracles capabilities it should tell you that before it sits there grinding for 12 minutes and then kills the connection ? !! OK I've worked on oracle for a while too.

thanks
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Jinesh Kamdar
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Try changing the order of the conditions in ur WHERE clause i.e.

WHERE A.BudgetID = 1
AND A.CategoryID IN (9,59,66,47,52,68,61,56,49,50,71,51,67,76,64,70,55,58,63,75,62,72,65,57))
AND A.LocationID IN (....................................................................................................................................................................................................................................................................................................................................................)

An alternative as angelIII suggested would be to specify the range of values between the min & max and then exclude those not in the range since that would be a much smaller list i suppose i.e.

WHERE A.BudgetID = 1
AND A.CategoryID IN (9,59,66,47,52,68,61,56,49,50,71,51,67,76,64,70,55,58,63,75,62,72,65,57))
AND A.LocationID BETWEEN 2 AND 900
AND A.LocationID NOT IN (..........................................)
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syed555
Plq,

correct the line below... there is comma missing.. or you must remove space.

,151,152,486,718,153,154,155,156,157,158,159,719,588,160,161,48
4,


also remove the '(' before A.LocationID
use where cond. in the following manner.. no need to change sequece of cond.
where A.locationID in (1,2,3,..)
 and A.SomeOtherID in (6,7,8...)
 and A.SomeOtherCond = 'test'
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ASKER

Thanks for all the feedback. The missing comma was just a paste issue as commented earlier.

I am running a series of tests this morning to get to understand whats going on a bit better. I'm going to cut this back to find the "minimum scenario" where the problem occurs, and will report back here.

My initial tests show that

- Remove the category clause and it runs sub-second
- Remove the location clause and it runs sub-second
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ASKER

I forgot to mention, but its probably obvious, that the INSERT statement is not relevant, and the problem is reproduced in just the select statement.

AngelIII - I firstly tried an additional index for CategoryID, LocationID. That didnt help.  Also I tried a covering index on WidgetID,CategoryID,LocationID,BudgetID. Still didnt help

I have done several experiments with changing the sql around. The order of where conditions is not relevant. Adding extra where clauses on location doesnt make any difference.

So then I went to the oracle server, login as sys/sysdba, and change the following:

Setting        Old Value        New Value
--------------------------------------------
Shared Pool    48                    96
Buffer Cache   24                    48
Large Pool       8                     80

And the problem went away. consistently

So I put the oracle server back to its original settings.........and the problem is still gone away

Several expletives and profanities parted my lips at this stage, and Larry Ellisons parentage was brought into question.

Now I reboot the oracle server, start the db, and try again. Its STILL working. Original settings are still showing too.

Any ideas what could have chaned ?

I'm going to try this on the customers live server where the problem is happening.....

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ASKER

Hmmm customers server has Shared Pool 184, Buffer Cache 560. Their PGA target was 245 MB (my server was 24MB)

So I try increasing Large Pool to 80 MB, and cut the others back..

Problem still happening. So now increase everything.

One thing I did do on our server which I didnt mention above was "compute statistics" on the widget table.

----------------------------------------------------------------------------------------------------------------

ACCEPTED ANSWER

So... did compute statistics on the widget table, and now its working at the customer server too.

----------------------------------------------------------------------------------------------------------------
Points coming up...
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Mark Geerlings
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I'm glad that the problem seems to be solved, or has at least quit happening.  Your init settings (for: shared_pool, buffer_cache and large_pool) look unusually small.  The values from your customer's server look more typical.