Report queries and bind variables - only header printing to PDF

Hi,
I created a simple report query for printing to PDF with 2 bind variables. I created a link to this report like this
Print - the header information prints but none of the data.
What am i doing wrong? I'm pretty sure it has s/t to do with the bind variables.
IF a/o can please help, i'd really appreciate it.
Thanks,
Hindy

is it possible to export your application page to apex server and you shall also create a userid as demo/demo and post the url so that we shall try the debug

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Bind variable only can take valor one time?

Can you help me about the different results in "SQL Developer" and "SQL*Plus" with bind variable's management?
I execute next code. My table emp have 14 records.var n_fetch number;
var n_rowcount number;
declare
cursor S is
select emp_no from emp;
v_emp_no emp.emp_no%type;
begin
:n_fetch := 0; -- (1)
open S;
fetch S into v_emp_no;
while S%found loop
:n_fetch := :n_fetch + 1;
fetch S into v_emp_no;
end loop;
:n_rowcount := S%rowcount;
close S;
end;
print n_fetch n_rowcount
In SQL*Plus, the result is:N_FETCH
14
N_ROWCOUNT
14
In SQL Developer, the result is:n_fetch
0
n_rowcount
14
If I change instruction (1) for: :n_fetch := 100;
then, in SQL*Plus the result is correct (n_fetch=114 and n_rowcount=14) but in SQL Developer, attention, the result is:
n_fetch
100
n_rowcount
14
Conclusion: Bind variable only can take valor one time !!!
What happen's in SQL Developer? I work with Oracle SQL Developer 1.5.1.
Thanks, very much
Isidre Guixà

Isidre,
This is the same problem as I just highlighted on your other thread (Error in dbms_output with bind variables ? - basically only the first assignment per PL/SQL block seems to have an effect.
theFurryOne

How to querie with bind variable in findMode?

Hallo,
is it possible to use a querie with bind variable in findMode? And when how is it possible to initialize the bind variable?
Any help is appreciated.

Hi,
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Hi all,
I have the following RUN_PRODUCT but it gives me "bad bind variable:
DECLARE
pl_id ParamList;
BEGIN
pl_id := Create_Parameter_List('tmpdata');
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declare
pl_id paramlist;
begin
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add_parameter(pl_id, 'category', text_parameter, :parameter.category);
add_parameter(pl_id, 'paramform', text_parameter, 'no');
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end;
Thanks,
The Oracle Reports Team.

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Hello,
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Child reports and bind variables

I'm working on a user defined parent/child report. What I'm having an issue with is using a parents bind variable value in a child. To simpify my example:
The master query is:
select count(*), document
from download_audit
where activity_date > sysdate-:DAYS
group by document
which returns a count of downloads for each document in the last :DAYS days. I want the child report to then list the person that downloaded a selected document:
select document, user_id, activity_date from download_audit
where activity_date > sysdate - :DAYS
and document=:DOCUMENT
This does not work because the initial :DAYS bind isn't sent to the child.
If I add the :DAYS as a selected column to the master sql it works. e.g.
select count(*), document, :DAYS days
from download_audit
where activity_date > sysdate-:DAYS
group by document
My question is, do child bind variables all have to be selected columns in the master query or is there a way to have a "global" bind variable that gets carried from master to child?
I'm using SQL Developer 3.2.20.09 on OS X Lion
Edited by: RoboMan on Nov 16, 2012 11:23 AM

I agree whole heartedly :)
If you want to make things even more interesting, create some 3rd generation child reports and carry the bind variables throughout the multiple levels - here's an example
http://www.thatjeffsmith.com/archive/2012/09/grandparent-parent-child-reports-in-sql-developer/

Query and bind variable display in reports

I have created a reports portlet using the locally built providers facility with the create a new reports. It seems to work fine except that the sql query and the bind variables show up in the report along with the report itself. How do I keep these from showing up?? I am on Portal 9.04
Ken Rubesh

ON the Page displayoptions tab, you can select "Show Query Conditions?..
is that unselected?
if you are talking about the fields from your select statement showing up in the body of the report, you can set the field type to hidden on the 2nd tab(column formatting).
hope this helps

Report Performance with Bind Variable

Getting some very odd behaviour with a report in APEX v 3.2.1.00.10
I have a complex query that takes 5 seconds to return via TOAD, but takes from 5 to 10 minutes in an APEX report.
I've narrowed it down to one particular bind. If I hard code the date in it returns in 6 seconds, but if I let the date be passed in from a parameter it takes 5+ minutes again.
Relevant part of the query (an inline view) is:
,(select rglr_lect lect
,sum(tpm) mtr_tpm
,sum(enrols) mtr_enrols
from ops_dash_meetings_report
where meet_ev_date between to_date(:P35_END_DATE,'DD/MM/YYYY') - 363 and to_date(:P35_END_DATE,'DD/MM/YYYY')
group by rglr_lect) RPV
I've tried replacing the "to_date(:P35_END_DATE,'DD/MM/YYYY') - 363" with another item which is populated with the date required (and verified by checking session state). If I replace the :P35_END_DATE with an actual date the performance is fine again.
The weird thing is that a trace file shows me exactly the same Explain Plan as the TOAD Explain where it runs in 5 seconds.
Another odd thing is that another page in my application has the same inline view and doesn't hit the performance problem.
The trace file did show some control characters (circumflex M) after each line of this report's query where these weren't anywhere else on the trace queries. I wondered if there was some sort of corruption in the source?
No problems due to pagination as the result set is only 31 records and all being displayed.
Really stumped here. Any advice or pointers would be most welcome.
Jon.

Don't worry about the Time column, the cost and cardinality are more important to see whther the CBO is making different decisions for whatever reason.
Remember that the explain plan shows the expected execution plan and a trace shows the actual execution plan. So what you want to do is compare the query with bind variables from an APEX page trace to a trace from TOAD (or sqlplus or whatever). You can do this outside APEX like this...
ALTER SESSION SET EVENTS '10046 trace name context forever, level 1';Enter and run your SQL statement...;
ALTER SESSION SET sql_trace=FALSE;This will create a a trace file in the directory returned by...
SELECT value FROM v$parameter WHERE name = 'user_dump_dest' Which you can use tkprof to format.
I am assuming that your not going over DB links or anything else slightly unusual?
Cheers
Ben

Report Query with Bind variables working very slowly

Hi everyone,
I'm having a hard time with one of my Reports.
Basically the query looks like this:
Select *
from x,y,z
where x.lang_id = :P1_LANG
and y.name = :P1_LANG;
I have a textfield and a Select List on my Page which have to have a value before the report is shown.
Now to the problem, when I input a value into these Application Items the Report takes ages (3-5 min). But when I replace the Bind variables (:P1_LANG and :P1_LANG) with the actual values it takes mere seconds.
Anyone got an idea why this might be?
I'm at my wits end -.-
Edited by: DocD on Oct 27, 2009 3:01 AM

Hi
This could be for a number of reasons and unfortunately there is no quick answer...
When you run a query for the first time, the execution plan is worked out by the Cost Based Optimiser (I'm assuming you're using 10g or above here). This is referred to as a hard parse. Next time the same SQL text is used then the execution plan may still be in the shared pool - in this case the same execution plan is used rather than being calculated again.
The great thing about using bind variables is that even with different inputs, the SQL text is the same so the execution plan can be shared for different inputs. One downside is that if the first time the query is executed using bind variables, out of the ordinary values are input, bind variable peeking can lead to a sub optimal execution plan being calculated for the query and then shared in other situations (where more 'normal' values are input).
However, it could be down to a host of other things too. So your first check is to make sure that you have executed both queries a number of times. If you are still getting the same performance issues then plan post the full query, table creation scripts and execution plan for both querys.
Cheers
Ben

Report query with bind variable

Trying to create a report query for xsl-fo print. For output format I pick "derive from item" then pick the item name from the list, on the next screen, I paste the query with the bind variable. on the next step test query, I always get "data not found" regardless what value I type in. This is the same query that I ran under sql commands without any issues.
Does anyone run into the same issue as I have when attempted to create a query with bind var ? There is no problem creating a query without bind varibles. . thanks.
Munshar

Hi, please did you get any solution to this issue? I am having similar challenge right now.
select     EMP.DEPTNO as DEPTNO,
     DEPT.DNAME as DNAME,
     EMP.EMPNO as EMPNO,
     EMP.ENAME as ENAME,
     EMP.JOB as JOB,
     EMP.MGR as MGR,
     EMP.HIREDATE as HIREDATE,
     EMP.SAL as SAL
from     SCOTT.DEPT DEPT,
     SCOTT.EMP EMP
where EMP.DEPTNO=DEPT.DEPTNO
and      DEPT.DNAME =upper(:dname)
This run perfectly in sql developer, toad, and even inside publisher if I login directly to publisher to create report.
Generating this same query in shared component query builder and testing it returns no data found. If I remove the last line, it works. but with the last line, it return no data found. It seems no one has been able to provide solution to this issue

SLOW report performance with bind variable

Environment: 11.1.0.7.2, Apex 4.01.
I've got a simplified report page where the report runs slowly compared to running the same query in sqldeveloper. The report region is based on a pl/sql function returning a query. If I use a bind variable in the query inside apex it takes 13 seconds to run, and if I hard code a string it takes only a few hundredths of a second. The query returns one row from a table which has 1.6 million rows. Statistics are up-to-date and the columns in the joins and where clause are indexed.
I've run traces using p_trace=YES from Apex for both the bind variable and hard coded strings. They are below.
The sqldeveloper explain plan is identical to the bind variable plan from the trace, yet the query runs in 0.0x seconds in sqldeveloper.
What is it about bind variable syntax in Apex that is causing the bad execution plan? Apex Bug? 11g bug? Ideas?
tkprof output from Apex trace with bind variable is below...
select p.master_id link, p.first_name||' '||p.middle_name||' '||p.last_name||' '||p.suffix personname,
p.gender||' '||p.date_of_birth g_dob, p.master_id||'*****'||substr(p.ssn,-4) ssn, p.status status
from persons p
where
   p.person_id in (select ps.person_id from person_systems ps where ps.source_key like LTRIM(RTRIM(:P71_SEARCH_SOURCE1)))
order by 1
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.00       0.01          0          1         27           0
Fetch        2     13.15      13.22      67694      72865          0           1
total        4     13.15      13.23      67694      72866         27           1
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 62 (ODPS_PRIVACYVAULT)   (recursive depth: 1)
Rows     Row Source Operation
      1 SORT ORDER BY (cr=72869 pr=67694 pw=0 time=0 us cost=29615 size=14255040 card=178188)
      1   FILTER (cr=72869 pr=67694 pw=0 time=0 us)
      1    HASH JOIN RIGHT SEMI (cr=72865 pr=67694 pw=0 time=0 us cost=26308 size=14255040 card=178188)
      1     INDEX FAST FULL SCAN IDX$$_0A300001 (cr=18545 pr=13379 pw=0 time=0 us cost=4993 size=2937776 card=183611)(object id 68485)
1696485     TABLE ACCESS FULL PERSONS (cr=54320 pr=54315 pw=0 time=21965 us cost=14958 size=108575040 card=1696485)
Rows     Execution Plan
      0 SELECT STATEMENT   MODE: ALL_ROWS
      1   SORT (ORDER BY)
      1    FILTER
      1     HASH JOIN (RIGHT SEMI)
      1      INDEX   MODE: ANALYZED (FAST FULL SCAN) OF
                 'IDX$$_0A300001' (INDEX)
1696485      TABLE ACCESS   MODE: ANALYZED (FULL) OF 'PERSONS' (TABLE)
Elapsed times include waiting on following events:
Event waited on                             Times   Max. Wait Total Waited
----------------------------------------   Waited ---------- ------------
db file scattered read                       1276        0.00          0.16
db file sequential read                       812        0.00          0.02
direct path read                             1552        0.00          0.61
********************************************************************************Here's the tkprof output with a hard coded string:
select p.master_id link, p.first_name||' '||p.middle_name||' '||p.last_name||' '||p.suffix personname,
p.gender||' '||p.date_of_birth g_dob, p.master_id||'*****'||substr(p.ssn,-4) ssn, p.status status
from persons p
where
   p.person_id in (select ps.person_id from person_systems ps where ps.source_key like LTRIM(RTRIM('0b')))
order by 1
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.02       0.04          0          0          0           0
Execute      1      0.00       0.00          0          0         13           0
Fetch        2      0.00       0.00          0          8          0           1
total        4      0.02       0.04          0          8         13           1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 62 (ODPS_PRIVACYVAULT)   (recursive depth: 1)
Rows     Row Source Operation
      1 SORT ORDER BY (cr=10 pr=0 pw=0 time=0 us cost=9 size=80 card=1)
      1   FILTER (cr=10 pr=0 pw=0 time=0 us)
      1    NESTED LOOPS (cr=8 pr=0 pw=0 time=0 us)
      1     NESTED LOOPS (cr=7 pr=0 pw=0 time=0 us cost=8 size=80 card=1)
      1      SORT UNIQUE (cr=4 pr=0 pw=0 time=0 us cost=5 size=16 card=1)
      1       TABLE ACCESS BY INDEX ROWID PERSON_SYSTEMS (cr=4 pr=0 pw=0 time=0 us cost=5 size=16 card=1)
      1        INDEX RANGE SCAN IDX_PERSON_SYSTEMS_SOURCE_KEY (cr=3 pr=0 pw=0 time=0 us cost=3 size=0 card=1)(object id 68561)
      1      INDEX UNIQUE SCAN PK_PERSONS (cr=3 pr=0 pw=0 time=0 us cost=1 size=0 card=1)(object id 68506)
      1     TABLE ACCESS BY INDEX ROWID PERSONS (cr=1 pr=0 pw=0 time=0 us cost=2 size=64 card=1)
Rows     Execution Plan
      0 SELECT STATEMENT   MODE: ALL_ROWS
      1   SORT (ORDER BY)
      1    FILTER
      1     NESTED LOOPS
      1      NESTED LOOPS
      1       SORT (UNIQUE)
      1        TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                   'PERSON_SYSTEMS' (TABLE)
      1         INDEX   MODE: ANALYZED (RANGE SCAN) OF
                    'IDX_PERSON_SYSTEMS_SOURCE_KEY' (INDEX)
      1       INDEX   MODE: ANALYZED (UNIQUE SCAN) OF 'PK_PERSONS'
                  (INDEX (UNIQUE))
      1      TABLE ACCESS   MODE: ANALYZED (BY INDEX ROWID) OF
                 'PERSONS' (TABLE)

Patrick, interesting insight. Thank you.
The optimizer must be peeking at my bind variables with it's eyes closed. I'm the only one testing and I've never passed %anything as a bind value. :)
Here's what I've learned since my last post:
I don't think that sqldeveloper is actually using the explain plan it says it is. When I run explain plan in sqldeveloper (with a bind variable) it shows me the exact same plan as Apex with a bind variable. However, when I run autotrace in sqldeveloper, it takes a path that matches the hard coded values, and returns results in half a second. That autotrace run is consistent with actually running the query outside of autotrace. So, I think either sqldeveloper isn't really using bind variables, OR it is using them in some other way that Apex does not, or maybe optimizer peeking works in sqldeveloper?
Using optimizer hints to tweak the plan helps. I've tried both /*+ FIRST_ROWS */ and /*+ index(ps pk_persons) */ and both drop the query to about a second. However, I'm loath to use hints because of the very dynamic nature of the query (and Tom Kyte doesn't like them either). The hints may end up hurting other variations on the query.
I also tested the query by wrapping it in a select count(1) from ([long query]) and testing the performance in sqldeveloper and in Apex. The performance in that case is identical with both bind variables and hard coded variables for both Apex and SqlDeveloper. That to me was very interesting and I went so far as to set up two bind variable report regions on the same page. One region wrapped the long query with select count(1) from (...) and the other didn't. The wrapped query ran in 0.01 seconds, the unwrapped took 15ish seconds with no other optimizations. Very strange.
To get performance up to acceptable levels I have changed my function returning query to:
1) Set the equality operator to "=" for values without wildcards and "like" for user input with wildcards. This makes a HUGE difference IF no wildcard is used.
2) Insert a /*+ FIRST_ROWS */ hint when users chose the column that requires the sub-query. This obviously changes the optimizer's plan and improves query speed from 15 seconds to 1.5 seconds even with wildcards.
I will NOT be hard coding any user supplied values in the query string. As you can probably tell by the query, this is an application where sql injection would be very bad.
Jeff, regarding your question about "like '%' || :P71_SEARCH_SOURCE1 || '%'". I've found that putting wildcards around values, particularly at the beginning will negate any indexing on the column in question and slows performance even more.
I'm still left wondering if there isn't something in Apex that is breaking the optimizer "peeking" that Patrick describes. Perhaps something in the way it switches contexts from apex_public_user to the workspace schema?

How to call a report with a bind variable from a multi-record block

Hi,
I have created a report using the BI Publisher functionality. I did all the integration, created the SQL Query and uploaded the template. Up till here everythings fine!
My SQL Query has 2 bind variables.
I will call my report from a multi record block, at the end of each record an icon is shown which the user can click to open the report.
I created a column link for this item (PRINT_REPORT=Inschrijvingsformulier) but I do not manage to pass the parameters to my report. The parameters I want to pass are 2 columns in this Multi Record block.
I created 2 hidden fields on the page P9_PARAMETER1, P9_PARAMETER2 with the same names as my bind variables and fill this in with the values #PARAMETER1#, #PARAMETER2# from the multi record block.
It seems it does not work as my report stays empty. (also XML file stays empty).
Am I trying the wrong way?
Thanks for any advice,
Kris

hi khadeer,
create one report program and write the required code,and call this function module 'SSF_FUNCTION_MODULE_NAME' and give your smartform name and also when u activate ur smart form u will get one function module call that function module also and specify any tables used...
i think this solves ur problem...
any queries revert back..
pls reward points if helpful,
shylaja

Report queries and bind variables - only header printing to PDF

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