Query performance affected with use of package.function in 11g

Hi,
I have a view that helps select account details for a particular account and use that in a form. The query in the view is:
select acc.* from accounts acc where acc.account_no = pkgacc.fGetAccNo;
Here "pkgacc" is a package that has set and get methods. ACCOUNT_NO is the PK for ACCOUNTS table. This same query when run in a 10g database makes use of the PK INDEX. However in 11g it does a FULL SCAN.
Regards

Hi,
1/ Volume is the same
2/ All statistics are up to date
10g Plan
Plan
SELECT STATEMENT ALL_ROWS
Cost: 18 Bytes: 462 Cardinality: 3
     23 NESTED LOOPS
          21 NESTED LOOPS
          Cost: 18 Bytes: 462 Cardinality: 3
               19 VIEW VIEW SYS.VW_NSO_1
               Cost: 12 Bytes: 39 Cardinality: 3
                    18 HASH UNIQUE
                    Cost: 12 Bytes: 110 Cardinality: 3
                         17 UNION-ALL
                              2 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.OLD_ACCOUNT_LINKS
                              Cost: 0 Bytes: 25 Cardinality: 1
                                   1 INDEX RANGE SCAN INDEX SUMMIT.OACCL_2
                                   Cost: 0 Cardinality: 1
                              8 NESTED LOOPS
                                   6 NESTED LOOPS
                                   Cost: 7 Bytes: 40 Cardinality: 1
                                        4 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.ACCOUNTS
                                        Cost: 4 Bytes: 18 Cardinality: 1
                                             3 INDEX RANGE SCAN INDEX (UNIQUE) SUMMIT.ACC_PRIME
                                             Cost: 3 Cardinality: 1
                                        5 INDEX RANGE SCAN INDEX SUMMIT.ACCL_2
                                        Cost: 2 Cardinality: 1
                                   7 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.ACCOUNT_LINKS
                                   Cost: 3 Bytes: 22 Cardinality: 1
                              16 NESTED LOOPS
                              Cost: 5 Bytes: 45 Cardinality: 1
                                   14 MERGE JOIN CARTESIAN
                                   Cost: 5 Bytes: 30 Cardinality: 1
                                        10 TABLE ACCESS BY INDEX ROWID TABLE CVC.ACT01
                                        Cost: 3 Bytes: 15 Cardinality: 1
                                             9 INDEX RANGE SCAN INDEX (UNIQUE) CVC.PK_ACT01
                                             Cost: 2 Cardinality: 1
                                        13 BUFFER SORT
                                        Cost: 2 Bytes: 30 Cardinality: 2
                                             12 TABLE ACCESS BY INDEX ROWID TABLE CVC.ACF02
                                             Cost: 2 Bytes: 30 Cardinality: 2
                                                  11 INDEX RANGE SCAN INDEX (UNIQUE) CVC.PK_ACF02
                                                  Cost: 1 Cardinality: 2
                                   15 INDEX UNIQUE SCAN INDEX (UNIQUE) CVC.PK_BIT41
                                   Cost: 0 Bytes: 15 Cardinality: 1
               20 INDEX UNIQUE SCAN INDEX (UNIQUE) SUMMIT.CUST_PRIME
               Cost: 1 Cardinality: 1
          22 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.CUSTOMERS
          Cost: 2 Bytes: 141 Cardinality: 1
11g Plan
Plan
SELECT STATEMENT ALL_ROWS
Cost: 1,136,322 Bytes: 138,218,223,528 Cardinality: 897,520,932
     19 HASH JOIN
     Cost: 1,136,322 Bytes: 138,218,223,528 Cardinality: 897,520,932
          1 TABLE ACCESS FULL TABLE SUMMIT.CUSTOMERS
          Cost: 14,455 Bytes: 355,037,154 Cardinality: 2,517,994
          18 VIEW VIEW SYS.VW_NSO_1
          Cost: 20,742 Bytes: 11,685,473,072 Cardinality: 898,882,544
               17 HASH UNIQUE
               Cost: 20,742 Bytes: 35,955,720,360 Cardinality: 898,882,544
                    16 UNION-ALL
                         3 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.OLD_ACCOUNT_LINKS
                         Cost: 0 Bytes: 25 Cardinality: 1
                              2 INDEX RANGE SCAN INDEX SUMMIT.OACCL_2
                              Cost: 0 Cardinality: 1
                         8 HASH JOIN
                         Cost: 20,354 Bytes: 35,951,952,800 Cardinality: 898,798,820
                              5 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.ACCOUNTS
                              Cost: 5,398 Bytes: 1,400,292 Cardinality: 77,794
                                   4 INDEX RANGE SCAN INDEX (UNIQUE) SUMMIT.ACC_PRIME
                                   Cost: 102 Cardinality: 28,006
                              7 TABLE ACCESS BY INDEX ROWID TABLE SUMMIT.ACCOUNT_LINKS
                              Cost: 4,634 Bytes: 4,575,208 Cardinality: 207,964
                                   6 INDEX RANGE SCAN INDEX SUMMIT.ACCL_2
                                   Cost: 145 Cardinality: 37,433
                         15 HASH JOIN
                         Cost: 388 Bytes: 3,767,535 Cardinality: 83,723
                              10 TABLE ACCESS BY INDEX ROWID TABLE CVC.ACT01
                              Cost: 271 Bytes: 4,065 Cardinality: 271
                                   9 INDEX RANGE SCAN INDEX (UNIQUE) CVC.PK_ACT01
                                   Cost: 3 Cardinality: 342
                              14 HASH JOIN
                              Cost: 115 Bytes: 92,580 Cardinality: 3,086
                                   12 TABLE ACCESS BY INDEX ROWID TABLE CVC.ACF02
                                   Cost: 76 Bytes: 46,290 Cardinality: 3,086
                                        11 INDEX RANGE SCAN INDEX (UNIQUE) CVC.PK_ACF02
                                        Cost: 4 Cardinality: 555
                                   13 INDEX FAST FULL SCAN INDEX (UNIQUE) CVC.PK_BIT41
                                   Cost: 38 Bytes: 557,220 Cardinality: 37,148

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Using a packaged function in a query

Hi ,
I have read the following statement (correct option for the question)in 1z0-147 questions.
The question is :: WHEN USING A PACKAGED FUNCTION IN A QUERY which of the following is true ::
The packaged function cannot execute DML statements against the table that is being queriedI tried the following to understand the above statement
create or replace package test_pk is
function fn_test(i number) return number ;
end;
create or replace package body test_pk is
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Thanks
Edited by: Smile on Nov 22, 2012 9:47 AM

No, it is not true. Any function used in SQL is not allowed to perform a DML operation other than SELECT regardless if it is against the table that is being queried or not. Select is allowed against any table. And function in your example does INSERT which is not allowed. Also, Any function used in SQL is not allowed to perform commit/rollback/savepoint.
SY.
Edit: unless function is autonomous transaction.
Edited by: Solomon Yakobson on Nov 22, 2012 10:22 AM

Performance issue with using MAX function in pl/sql

Hello All,
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First of all Thanks to all gentlemen who replied ..many thanks ...
Tried the ROW_NUMBER() option but still it is taking time...have given output for the query and tkprof results as well. Even when it doesn't fetch any record ( this is a valid cased because the input header id doesn't have any workflow request submitted & hence no entry in the wf_items table)..then also see the time it has taken.
Looked at the RANK & DENSE_RANK options which were suggested..but it is still taking time..
Any further suggestions or ideas as to how this could be resolved..
SELECT 'Y', 'Y', ITEM_KEY
FROM
( SELECT ITEM_KEY, ROW_NUMBER() OVER(ORDER BY BEGIN_DATE DESC) RN FROM
WF_ITEMS WHERE ITEM_TYPE = 'xxxxzzzz' AND ROOT_ACTIVITY = 'START_REQUESTS'
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Execute 1 0.00 1.57 0 0 0 0
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Hi All!
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Many thanks, Dmitry.

Hi Makarov,
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where the amounts are recorded directly to the parent without including children values.
Reference:
Analysis Services Query Performance Top 10 Best Practices
Top 3 Simplest Ways To Improve Your MDX Query
Best Regards,
Simon Hou
TechNet Community Support

Poor query performance only with migrated 7.0 queries

Dear Team,
We are facing a serious query performance issue after migration of queries from 3.5 to 7.0.
I executed a query in 3.5 with some variable values which takes fraction of seconds to display the output. But the same migrated query with same variable entries is taking very long time and giving time out error.
We are not using any aggregates in the InfoProvider level.
Both the queries are based on same cube but 3.5 query is taking less time and 7.0 is taking very long time if more selection is done.
I checked for notes where I didn't find specific note for this particular scenario. I found notes only for general query performance improvement.
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Hi,
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inorder to check if the problem is in the query runtime (database time) or JAVA runtime (probably rendering) you should try running it from RSRT once in JAVA web and once in ABAP web.
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I have two target schema in one OWB project, such as A and B. In a mapping of A, I would like to use some types, packages, functions, and procedures from B. I have tried the method of synonym as suggested, but I could not find the metadata of these when importing ... The only type of synonym I can import is the synonym for table. Is there a bug for synonym?
If I cannot use synonym for this issue, is there another way to solve the problem?

Now, in some instances you will absolutely need to create the second module as Carsten describes, however it should also be noted that you can reference objects in things like Expressions even if you have not loaded up the metadata. It is only when you need strong binding that it becomes neccessary to import objects. For everything else, as long as the reference will resolve at compile-time then you are good to go.
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Having trouble with using variables in functions and after functions..

Morning,
I have simplified this, as it represents the core of what’s I obviously don't know how to do.
Problem:
Say I populate that variable by reading in a list if IP addresses from file, finding the line that matches the hostname and place that string into the $IPAddress variable for use later throughout the script.   I did not run into a significant problem
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Once the function had done its work, and had placed the data into the variable, I expected that “new” data to be available after the function had completed..in that variable. But it’s like the $IPAddress variable in the main script is a totally
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So I think this demonstrates some of what’s kicking my butt..
$IPAddress = "This is the wrong data”
Function TestFunction ()
$IPAddress #call to display the contents of the variable at the start of the function.
$IPAddress = Read-Host -Prompt "Please enter the text ‘Goober’"
$IPAddress   #call to display the contents of the variable at the end of the function.
TestFunction
$IPAddress
The output I get is:
This is the wrong data
"Please enter ‘Goober’" : where I enter Goober
Goober
This is the wrong data
Huh?
I had expected:
This is the wrong data
"Please enter ‘Goober’" : where I enter Goober
Goober
Goober
What good is the repeatability of a function if it’s output is lost?

THis seems to work.. IS there any reason NOT to do this?
$Global:IPAddress= "This is the wrong data” #"
Function TestFunction{
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     $Global:IPAddress =
Read-Host -Prompt
"Please enter the text ‘Goober’"
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TestFunction
return$Global:IPAddress

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Hi,
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Thanks,
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Hi,
have you read the documentation?
Let me paste it here for you:
Buffering is switched on for the examined table and it has data type 'APPL0' or 'APPL1'.
Tables with data type 'APPL0' or 'APPL1' should contain master or transaction data, so these tables should either contain a large amount of data or their content should change frequently. Therefore buffering the table is unfavourable. Very large tables suppress other tables in the buffer memory and hence slow done any access to them. Transaction data should not be buffered because the synchronization of the changes on the various application servers is very time consuming.
In exceptional cases, small master data tables ('APPL0', size category 0) can be buffered.
The solution depends on the table content. If it is master or transaction data, the table should not be buffered. If the table content does not consist of master or transaction data, the data type should be corrected accordingly.
This should answer your questions...
Kind regards,
Hermann

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Use a package function inside a select of the same package

Hi.
How can i use a function defined inside a package, with a select used inside that same package ?
Example
... package example
CREATE OR REPLACE PACKAGE BODY pkg_example
AS
     FUNCTION sum_two_values(p_val1 NUMBER,p_val2 NUMBER) RETURN NUMBER
     IS
     BEGIN
     RETURN p_val1 + p_val2;
     END sum_two_values;
     FUNCTION use_another_function_example RETURN VARCHAR2
     IS
     v_value NUMBER;
     BEGIN
     SELECT sum_two_values(2,2) INTO v_value FROM dual;
     RETURN 'waaaazzzzupppppp'
     END use_another_function_example;
END pkg_example;
This will not work
-- SELECT sum_two_values(2,2) INTO v_value FROM dual;
How can i call a function inside a select statement, a function of the same package where the query is being called.
(i have Oracle 9.2x)
Cheers.

are you sure? you are not using package1, you are using pack1
SQL> CREATE OR REPLACE PACKAGE package1
2 IS
3     FUNCTION f1
4        RETURN NUMBER;
5
6     FUNCTION f2
7        RETURN NUMBER;
8 END;
9 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY package1
2 IS
3     a   NUMBER;
4
5     FUNCTION f1
6        RETURN NUMBER
7     IS
8     BEGIN
9        RETURN 1;
10     END;
11
12     FUNCTION f2
13        RETURN NUMBER
14     IS
15     BEGIN
16        SELECT package1.f1
17          INTO a
18          FROM DUAL;
19
20        RETURN a;
21     END;
22 END;
23 /
Package body created.
Why not just this
SQL> ed
Wrote file afiedt.buf
1 CREATE OR REPLACE PACKAGE BODY package1
2 IS
3     a   NUMBER;
4     FUNCTION f1
5        RETURN NUMBER
6     IS
7     BEGIN
8        RETURN 1;
9     END;
10     FUNCTION f2
11        RETURN NUMBER
12     IS
13     BEGIN
14        a:= f1;
15 RETURN a;
16     END;
17* END;
SQL> /
Package body created.formatted
Message was edited by:
devmiral

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Hello,
I'm using Oracle 10g, with ODP.Net in a C# application.
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thanks
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With 78ms and 95ms are you talking about milliseconds or minutes? If it's milliseconds then what's the problem and does it really matter if there is a difference of 17 milliseconds as that could just be caused by network traffic or something. If you're talking minutes, then we would need more information about what you are attempting to do, what tables and processing is going on, what indexes you have etc.
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Hi all,
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Querying the Cube using SQL brings back the correct result across different level combination, however the query constantly takes about 2 - 3 mins to complete.
As a test, I've built another dimension that goes down to the Department level only, and issue the same query against the Cube. The difference is significant as the query takes roughly less than 1 second to complete, and returns exactly the same result.
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Thanks

The stats you posted are puzzling. Usually the sum of loop and fetch time is close to the total time, but there is a big missing chunk of time in your case. It is clearly related to the calculated measures, since removing them solves the problem.
The most common problem with calculated measures is that they can cause the cube to loop densely (i.e. all logical member combinations) instead of sparsely (i.e. only the member combinations that have data). But I don't think this is the problem in your case since the difference between rows_read and rows_returned is small
ROWS_READ 212ROWS_RETURNED 185
NULLTRACK_SUPPRESSED 27>
If dense looping has happened then the rows_read is often orders of magnitude greater than rows_returned. You can see the looping strategy by running
select value || ' : ' || details as loop from cube_operations_log where name = 'LOOP_OPTIMIZED'Here is an example of the output for a good (sparse) loop.
LOOP
ON : LOOP AGGMAP(PRICE_COST_CUBE_SOLVE_AGGMAP PRICE_COST_CUBE_PRT_TEMPLATE)Here is the output if I add a year to date calc to the cube.
LOOP
ON : LOOP UNION(AGGMAP(PRICE_COST_CUBE_SOLVE_AGGMAP PRICE_COST_CUBE_PRT_TEMPLATE
) AGGMAP(DENSE(TIME) PRICE_COST_CUBE_SOLVE_AGGMAP PRICE_COST_CUBE_PRT_TEMPLATE))Note that TIME is now looped densely, but the code is still trying to loop the other dimensions sparsely. Finally, here is the loop if I add a random olap dml calculation to the cube.
LOOP
DISABLED :There is now no optimized looping and the cube will be looped densely.
So it may be worth checking the loop descriptor for your fast and slow cases, but my best guess at the moment is that the performance gap has something to do with your specific calculations. If I were you I would add them back one at a time to see if you can find a particular measure, or type of measure, that is causing the slowdown.

Query performance problem when using hierarchies

Hello All,
I've a query which is built on a hieracrhy with the following structure for eg.
A
|_B
| |_L1
|
|_C
|_L2
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Could some one please help me out as to why this is the case ?
I don't have aggregates built on any of the hierarchy level.
Best Regards,
Sanjay

Hi Roberto,
thanks for your response. However, the problem is not solved even after applying the suggestions of the note 738098 :(. These queries used to execute fine until yesterday and there have been no major additions to the hierarchy. Please let me know if there is any thing else that can be done. We are planning to bounce the system and see if there are any performance improvements.
PS: I've awarded points to you nevertheless, as the option suggested in the note seems useful and should be tried in case of these kind of performance issues
Best Regards,
Sanjay

Query performance difference with same script in two servers

Dear all,
I have problem with an INSERT Procedure. I have 2 servers, say Server A and Server B, In Server A the query execution will be finished in 4 minutes where in the Server B the same Query its taking more than 2 hours.
If I look into the execution plan in both servers, it looks different.
Both have the Default Parallelism settings.
Cost Threshold for Parallelism : 5
Locks : 0
Max Degree of Parallelism : 0
Query Wait : -1
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When I look into the SERVER A's active running processes in management studio, I found that there are 8 INSERT Queries running with only 2 RUNNABLE and 6 SUSPENDED. Anything is getting locked out or Waiting?
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Regards,
kranthi kumar G.

Thanks Tony for your reply. Here are my answers.
Are we talking a large amount of inserts?
YES
What is the autogrowth settings for the database files on the two Servers?
Autogrowth by 10%
The Server you are having an issue with, are the any triggers on the Tables?
No.
Is there a background or other trace running on the slow Server that could be impacting performance?
Yes, we are running a monitoring tool to check the performance of the load.
Is there another database on the slow Server causing issues?
No.
This could be a hardware issue; have you use perfmon to see if there are any disk queues?
We will check with our DBA on this.
What is the Raid Configuration? Are the files on a single spindle? If so what is the fragmentation state of any single spindle volume?
There is no Rain Configuration. Its a Windows Azure A7.
Are you automatically updating statistics on the slow Database?
Yes.
Is the Anti Virus Software on the Slow server scanning the data files?
Yes, but not on the database level.
Regards,
kranthi.

Trouble with using javascript $s function to populate a page item

Hello Oracle APEX Community,
I'm working on a drilldown dashboard page and have been encountering a problem when i try to populate a Text Page Item (hidden or not) using the javascript built in $s function.
The function works great when the data is a number such as dept_id (even if the field type is varchar). However, trying to pass anything which is a text the process fails, except when a value is hard-coded as a parameter for the function. So for example, I have a chart with counts of constituents by state. I would like to populate (filter) a table based on when you click on a bar for a state without having to submit the page. I'm using dynamic actions and a built in javascript function in the SQL for the chart to accomplish this; but again, it works great when I use a varchar field like the FIPS code (i.e. the FIPS for Texas is '48'), but when I try to populate the page item using the state abbreviation 'TX' (again varchar) it fails.
Here's an example of code that works:
SELECT 'javascript:$s("P1_DEPTNO",'||d.deptno||')' LINK,
d.dname LABEL,
sum(e.SAL) sal
FROM emp e, dept d
where e.deptno = d.deptno
group by 'javascript:$s("P1_DEPTNO",'||d.deptno||')', d.dname And here's an example of code that does not work:
SELECT 'javascript:$s("P1_DEPTNO",'||d.loc||')' LINK,
d.dname LABEL,
sum(e.SAL) sal
FROM emp e, dept d
where e.deptno = d.deptno
group by 'javascript:$s("P1_DEPTNO",'||d.loc||')', d.dname However, when I hard code a text value the script works:
SELECT 'javascript:$s("P1_DEPTNO","BOSTON")' LINK,
d.dname LABEL,
sum(e.SAL) sal
FROM emp e, dept d
where e.deptno = d.deptno
group by 'javascript:$s("P1_DEPTNO","BOSTON")', d.dname
ORDER BY d.dname I'm encountering this problem on several versions of APEX: (4.0.2.00.07-local installation) and (4.1.0.00.28-apex.oracle.com)
Does anybody know of this problem and how to solve it? I've looked for settings on the page item itself, and can't figure it out.
I've re-written my sql to utilize the value fields of my tables instead but I have some objects on the page which are really going to depend on the character based data instead.
Thanks,
Wayne

In your javascript you are generating, surround your value with double-quotes and it'll should then always work with both numbers and strings (your strings are probably being interpreted as variable names and they don't exist at runtime, hence erroring out).
Example:
SELECT 'javascript:$s("P1_DEPTNO","'||d.loc||'")' LINK,Edited by: gti_matt on Aug 16, 2011 9:50 AM

Query performance affected with use of package.function in 11g

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