Getting SQL for Prepared/Callable statement objects

Our current system is using CallableStatements (for performance) to log information to a database table. If there is an exception during this process, we want to log the SQL to a file for recovery later. Obviously, since the CallableStatement SQL statment only contains the '?' placeholders, we don't see the actual data in our logs.
Does anyone know how to retrieve the data that is inside the statement once it is put in using the set() methods? If not, does anyone know of a "drop-in" replacement that will provide access to that actual data?
Bob

This is the best solution i have found: http://www.javaworld.com/javaworld/jw-01-2002/jw-0125-overpower.html

Similar Messages

High memory usage on JDBC 10.2.0.1.0 driver on Prepared/Callable Statements

We are observing high memory usage for each callable/prepared stmt, using 10.2.0.1.0 JDBC Driver. The char[] in oracle/jdbc/driver/T4CVarcharAccessor was alloted 64K to 320K and grows with usage. This problem is worse with 10.1.0.2. driver which was alloted 720K byte of memory for each stmt right at the start.
We found this by doing a JVM heap dump and analyzing the heap dump using IBM's heap analyser. Here is a snapshot of the heap dump for this object:
321,240 [216] 11 oracle/jdbc/driver/T4CVarcharAccessor 0x72752968
- 320,616 [320,616] 0 char[] 0x72761028
- 216 [216] 0 short[] 0x727527d8
- 72 [32] 1 java/lang/String 0x727530a0
- 24 [24] 0 int[] 0x72752938
- 24 [24] 0 int[] 0x72752948
- 24 [24] 0 int[] 0x72752958
- 16 [16] 0 bool[] 0x72752928
- 16 [16] 0 byte[] 0x727528b0
- 16 [16] 0 bool[] 0x72752918
- 10,336 [88] 15 oracle/jdbc/driver/T4CMAREngine 0x712e7128
- 1,544 [1,032] 79 oracle/jdbc/driver/T4CPreparedStatement 0x72754c58
It is repeated many times for each prepared/callable stmt call.
Details of our platform is:
Database - Oracle Database 10g Release 10.2.0.1.0 - 64bit Production
JDBC Driver - Oracle Database 10g Release 2 (10.2.0.1.0) JDBC Drivers
JDK - [Classic VM, Version 1.4.2] from [IBM Corporation]
Our callable stmts are not using any of the Oracle caching facility. It is a simple call stmt with OUT parameters and the stmt is closed after each execution. However, we implement our own connection pooling and do not close the connection after each stmt.
Is there a workaround to this? Would appreciate any feedback.

What is happening is that each new CallableStatement you create allocates a new char[]. I would strongly encourage you to use the implicit statement cache if at all possible. That way instead of creating a new statement each time with a new char[] you will get an already existing statement and reuse the existing char[]. Closing a statement releases the char[] so if you really are closing the statements the char[]s should be GC'd.
Douglas

Please, Not getting result set from callable statement (Code posted)

I am posting some simple code which should get a ResultSet from a CallableStatement object using the executeQuery() Method.
It is returning "No RsultSet was produced"
If I modify the code and simply output the CallableableStatement using its executeUpdate() then getString() methods it works fine. Anything obviously wrong with this bit of code? Thanks.
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import db.util.query.*;
import db.util.pool.*;
public class oracle extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
Connection con = ConnectionFactory.getConnection();
CallableStatement cs = null;
ResultSet rs = null;
int intID = 1;
try{
cs = con.prepareCall("{? = call test1(?)}");
cs.registerOutParameter(1, java.sql.Types.VARCHAR);
cs.setInt(2,intID);
/*These lines work on their own
*cs.executeUpdate();
*out.println("Name is : " + cs.getString(1));
//this code is what is not working...hmm
rs = cs.executeQuery();
while(rs.next()){
out.println(rs.getString("name"));
rs.close();
cs.close();
//the rest of this works too.
ConnectionFactory.releaseConnection(con);
catch(SQLException e){
out.println(e.getMessage());
Here's the stored procedure. I'm just trying to do a simple test to return multiple rows. The table has numberous records with the same id which is being passed to the function.
create or replace function test1 ( strInputID IN testtable.id%type)
return varchar2
is
strOutputName testtable.name%type;
found_it EXCEPTION;
begin
select name into strOutputName from testtable
where id = strInputID;
raise found_it;
exception
when no_data_found
then
return null;
when found_it
then
return strOutputName;
end;

I've posted the code...it's doing a select. I think the problem is that to return multiple rows I need to return a cursor. But I've run into problems with both the MS and Oracle Drivers.
All I really want to do is to query a database using a callable statement(function in oracle) which will return multiple rows which I can process. I have been trying to do this in a servlet.
I can do it successfully for one column from one row, but not multiple columns from mulitple rows.
I've been searchging for some good examples and am trying different things but can't seem to get it to work.

Getting 'Skipped for Optimization' job state with %complete less than 100 - PWA PS 2010

I am getting Job State = Skipped for Optimization for
Job Type = Status Update with %Complete = 16%.. Now this job type shouldn't be skipped for optimization as per the understanding that MS is intelligently skipping duplicate jobs. Moreover there are no pre and post jobs in queue for
the same project. What could be the reason here? using PWA PS 2010

Eaman,
I saw that you posted the question in another thread as well. If you see Brian's reply from here, the Status Update job could also be skipped, and it is not necessarily a duplicate job.
See here: http://social.technet.microsoft.com/Forums/projectserver/en-US/cefa327b-2ada-4a50-aacf-b9d1f2082a45/status-update-skipped-for-optimization-job-state-at-20-in-project-server-queue?forum=projectserver2010general
Prasanna Adavi,PMP,MCTS,MCITP,MCT http://thinkepm.blogspot.com

Issue in Calling PL/SQL packages using callable statement

Hi ,
I have the requirement of calling two pl/sql packages , After call of first package is successful , i need to pass the output of that first package as input to second package.
Since i have called both the packages in same method of AM, first package gets executed successfully but second package doesnt get the input values required from first package and results in error.
Looks like since commit is happening in the single session second package is passed with NULL values.
Need suggestion for proper way of calling pl/sql packages when second package is dependant on first one:
Code used inside AM Method:
if("PENDING_XXX".equals(regVORow.getRegStatus()))
regVORow.setRegStatus("VENDOR_CREATED");
getOADBTransaction().commit();
OracleCallableStatement cStmt = null;
OADBTransaction dbTxn = getOADBTransaction();
NUMBER vendor_id = new NUMBER(-1);
NUMBER vendor_site_id = new NUMBER(-1);
int vendor_id_value = -2000;
String vendor_number = null;
try
cStmt = (OracleCallableStatement)dbTxn.createCallableStatement("begin *XXB_POS_PVT.create_vendo*r( p_vendor_name => :1, p_supplier_reg_id => :2, p_vendor_id=>:3); end;", 1);
cStmt.setString(1, regVORow.getSupplierName());
cStmt.setNUMBER(2, new Number(Integer.parseInt(supplierId)));
cStmt.registerOutParameter(3, 4);
cStmt.execute();
vendor_id = cStmt.getNUMBER(3);
vendor_id_value = vendor_id.intValue();
catch(SQLException e)
throw new OAException(e.getMessage());
Number vendorId = new Number(vendor_id_value);
regVORow.setVendorId(vendorId);
if(vendorId != null)
vendor_number = getSupplierVendorNumber(vendorId);
getOADBTransaction().commit();
AsiPosSupplierOpCosVOImpl regOpCosVO = (AsiPosSupplierOpCosVOImpl)this.getAsiPosSupplierOpCosVO1();
AsiPosSupplierOpCosVORowImpl row = null;
int fetchedRowCount = regOpCosVO.getFetchedRowCount();
RowSetIterator createIter1 = regOpCosVO.createRowSetIterator("createIter1");
if(fetchedRowCount > 0)
createIter1.setRangeStart(0);
createIter1.setRangeSize(fetchedRowCount);
for(int i = 0; i < fetchedRowCount; i++)
row = (AsiPosSupplierOpCosVORowImpl)createIter1.getRowAtRangeIndex(i);
if(row.getApprovalStatus().equalsIgnoreCase("HEAD_APPROVED"))
try
oadbtransactionimpl.writeDiagnostics(this,"Creating Site - " + vendor_id_value+" "+row.getSupplierOpcoCode()+" "+supplierId,1);
cStmt = (OracleCallableStatement)dbTxn.createCallableStatement("begin *XXB_POS_PVT.create_vendor_sites*(p_supplier_reg_id => :1, p_vendor_id=>:2, p_opco_code=>:3, p_vendor_site_id=>:4); end;", 1);
cStmt.setNUMBER(1, new Number(Integer.parseInt(supplierId)));
cStmt.setNUMBER(2, new Number(vendor_id_value));
cStmt.setString(3,row.getSupplierOpcoCode());
cStmt.registerOutParameter(4, 4);
cStmt.execute();
vendor_site_id = cStmt.getNUMBER(4);
getOADBTransaction().commit();
catch(SQLException e)
throw new OAException(e.getMessage());
createIter1.closeRowSetIterator();

Hi ,
There are some validation that can be performed from Entity level ( EO ) , you can go through them in Jdev guide .
It depends on the business requirement , not all validation can be performed from Entity level .
Let us know your business requirement , will try to clear your doubt .
--Keerthi

Wait for MTTR advisory state object

Hello I am running a snapshot in 10g and the MMon slave process is waiting for the MTTR advisory for over 2hrs now. Does anyone know what the issue is?

If one takes the time to read the OP's question, you can see that he states the version: 10.1. Anyway, one can infer that the question is about 10g, since enq: WF - contention is a new 10g wait event.
But I'm curious about this event too. None of my Milsap or Lewis books mentions it, and neither does the excellent Shee/Deshpande/Gopalakrishnan. The event does not merit a mention on Metalink, nor can you find it in the 10g or 11g online docs.
According to the naming convention of other enqueue wait events, WF would be the type of lock that is being waited on. But I have never heard of a WF lock. What could it mean?
All I can find out about this event is that it has one parameter, name|mode.
I am seeing it in the context of running a SQL Tuning Set cursor cache capture operation. A quick cruise through DBA_HIST_SYSTEM_EVENT tells me that this event has (almost) never arisen before on my system.
This is my first experience with STS, which is why I'm curious about new things that come my way. Is this event causing a problem? I'm not sure. It has only been experiencing about 8 seconds of wait per 10 minute snapshot since I started running my STS capture. Nobody is complaining, yet. But as they say, Knowledge is power.
So does anyone have insight into this mysterious wait event?
Thanks.

Get SQL for query to be displayed

Hi,
I'm creating a custom export tool (I've seen Denes's but I need to add some more customization to it). Is their a way I can get the SQL that is used to generate both "regular" reports and Interactive Reports (especially what the user is currently looking at). Generating the code for regular reports (including the sort order that the user is using) isn't too difficult. I've built a prototype for the Interactive Reports but it gets kind of messy and if any of the logic is changed in the next version of APEX I'll have to re-write.
Just to be clear I know I can get the default report SQL in the apex views. What I'd like is the query for what the user is currently looking at (i.e. conditional columns, sort order, and all the IR features).
Thank you,
Martin

Hi Martin,
The only way I see this working is looking into the different apex views (like you suggested), also for the Interactive Reports.
Following views may help you: APEX_APPLICATION_PAGE_IR, APEX_APPLICATION_PAGE_IR_CGRPS, APEX_APPLICATION_PAGE_IR_COL, APEX_APPLICATION_PAGE_IR_RPT
It will be indeed a bit messy as you need to look at the person who's watching the report. You'll probably need to parse some fields yourself (like the columns he sees are in format column1:column2 etc)
Maybe the APEX dev team knows a simpler way? or is there an api?
Regards,
Dimitri
http://dgielis.blogspot.com/
http://www.apex-evangelists.com/
http://www.apexblogs.info/

Error executing a callable statement on a pooled connection

Hi,
I have an Oracle function that returns a number:
create or replace function
S2B_STOP_STAGE (DOC_ID number, ST_ID number)
return number ...
and the following Java code:
Class.forName("weblogic.jdbc.pool.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:weblogic:pool:madrigalPool");
String sql = "{? = call S2B_STOP_STAGE(401,1002)}";
CallableStatement stmt = conn.prepareCall(sql);
stmt.registerOutParameter(1, Types.INTEGER);
stmt.execute(sql);
res = stmt.getInt(1);
When the execute(sql) statement is executed, a SQLException is thrown:
java.sql.SQLException: ORA-01008: not all variables bound
at weblogic.jdbc.pool.PreparedStatement.execute(PreparedStatement.java:121)
Does anybody have an idea about what may be wrong? I am using Oracle
8.1.6, the thin driver classes12-81620.zip, and WebLogic 6.0 sp2.
Thanks,
Vladimir

I found out what was wrong. I should have used execute() instead of execute(sql)
on the callable statement...
Sorry for the problem.
Vladimir
"vladimir" <[email protected]> wrote:
>
Hi,
I have an Oracle function that returns a number:
create or replace function
S2B_STOP_STAGE (DOC_ID number, ST_ID number)
return number ...
and the following Java code:
Class.forName("weblogic.jdbc.pool.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:weblogic:pool:madrigalPool");
String sql = "{? = call S2B_STOP_STAGE(401,1002)}";
CallableStatement stmt = conn.prepareCall(sql);
stmt.registerOutParameter(1, Types.INTEGER);
stmt.execute(sql);
res = stmt.getInt(1);
When the execute(sql) statement is executed, a SQLException is thrown:
java.sql.SQLException: ORA-01008: not all variables bound
at weblogic.jdbc.pool.PreparedStatement.execute(PreparedStatement.java:121)
Does anybody have an idea about what may be wrong? I am using Oracle
8.1.6, the thin driver classes12-81620.zip, and WebLogic 6.0 sp2.
Thanks,
Vladimir

XML SQL format for Prepared statements in batch mode

Hi
I want to use the batch mode in JDBC adapter for inserting huge volume of records with better performance.
so i need to execute the prepared statements in one batch.   Is the XML SQL format for prepared statements below correct ?to<root>
<stmt>
    <Customers action="SQL_DML">
      <access> INSERT INTO Customers (CompanyName,Address,CustomerID) VALUES($NAME$,$ADDRESS$,$KEYFIELD$)
      </access>
      <key>
        <NAME>IBM</NAME>
        <ADDRESS>Street 3 </ADDRESS>
        <KEYFIELD>CO</KEYFIELD>
      </key>
      <key>
        <NAME>PWC</NAME>
        <ADDRESS>Street 4 </ADDRESS>
        <KEYFIELD>NO</KEYFIELD>
     </key>
    </Customers>
</stmt>
</root>
Please advise

Hello Experts
Please throw some light on the above question.
Thanks in advance.

How to set the number of rings for the agent phone rings before it get the not prepared state

hi, how to set the number of rings for the agent phone rings? before it get the not prepared state.
thanks

The following assumes that you are using ICM with an IPIVR etc (not using CVP), as the answer is different for CVP
What you are looking for is called "Ring no answer time". It is set in the Agent Desk Setting List tool.
Regards,
Kevin

Need objective sql and pl/sql question for preparing interview

Hey buddy please help me, now I am preparing interview of sql and pl/sql where asking objective question, so I need online site for preparing interview, your suggestion would be greatly appreciated.

Have you tried searching using one of the many Internet search engines?
I expect that there are many kinds of sites out there that may cater to you.
The only other recommendation I would have would be to review the documentation at http://tahiti.oracle.com. Probably the SQL Language Reference, PL/SQL Reference, Application Developer's Guide, and Concept's Guide.

Statement,Prepared Statement and callable statement

Hi,
Please let me know in which scenario we are using Statement,Prepared Statement and callable statement.
and which is efficient one among the above.
Thanks in advance

Welcome to the forum!
>
Please let me know in which scenario we are using Statement,Prepared Statement and callable statement.
>
We don't know what scenario you are using those in or if you are using them at all. Are you asking what they are?
For document related questions you should consult the documentation or use your favorite search engine to get information.
See the Java Tutorial
http://docs.oracle.com/javase/tutorial/jdbc/basics/prepared.html
>
The main feature of a PreparedStatement object is that, unlike a Statement object, it is given a SQL statement when it is created. The advantage to this is that in most cases, this SQL statement is sent to the DBMS right away, where it is compiled. As a result, the PreparedStatement object contains not just a SQL statement, but a SQL statement that has been precompiled. This means that when the PreparedStatement is executed, the DBMS can just run the PreparedStatement SQL statement without having to compile it first.
>
The Javadocs for your Java SDK have the API for each of those classes and a description of what they are. And the Oracle JDBC Developer Guide has extensive information on how to use them.
http://docs.oracle.com/cd/B28359_01/java.111/b31224/toc.htm

ORA-13786: missing SQL text of statement object - Unable to profile a sql_id in oracle 11g -

11.2.0.3.5 / 2 node rac on rhel-6 / 64-bit
I would like to a profile a sql_id since its following 4 plans and one of them is the optimal.
But im unable to do it as it throwing ORA-13786.
Steps I followed :
{code}
SET SERVEROUTPUT ON
-- Tuning task created for specific a statement from the AWR.
DECLARE
l_sql_tune_task_id VARCHAR2(100);
BEGIN
l_sql_tune_task_id := DBMS_SQLTUNE.create_tuning_task (
                          begin_snap => 29676,
                          end_snap    => 29707,
                          sql_id      => 'fjndcnvzkjkb5',
                          scope       => DBMS_SQLTUNE.scope_comprehensive,
                          time_limit => 60,
                          task_name   => '420tavt57dxkx_tuning_task',
                          description => 'Tuning task for statement 420tavt57dxkx in AWR.');
DBMS_OUTPUT.put_line('l_sql_tune_task_id: ' || l_sql_tune_task_id);
END;
EXEC DBMS_SQLTUNE.execute_tuning_task(task_name => 'fjndcnvzkjkb5_CFO_tuning_task');
SET LONG 10000;
SET PAGESIZE 1000
SET LINESIZE 200
SELECT DBMS_SQLTUNE.report_tuning_task('420tavt57dxkx_tuning_task') AS recommendations FROM dual;
SET PAGESIZE 24
SQL> execute dbms_sqltune.accept_sql_profile(task_name =>'420tavt57dxkx_tuning_task_task', replace => TRUE,force_match => TRUE);
BEGIN dbms_sqltune.accept_sql_profile(task_name =>420tavt57dxkx_tuning_task', replace => TRUE,force_match => TRUE); END;
ERROR at line 1:
ORA-13786: missing SQL text of statement object "1" for tuning task "420tavt57dxkx_tuning_task"
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.DBMS_SQLTUNE_INTERNAL", line 16442
ORA-06512: at "SYS.PRVT_SQLPROF_INFRA", line 31
ORA-06512: at "SYS.DBMS_SQLTUNE", line 7544
ORA-06512: at "SYS.DBMS_SQLTUNE", line 7568
ORA-06512: at line 1
{code}
Can somebody help me out on this?

Hi Experts,
i too getting this error while attaching the tuning task to the sql profiler, below are the details, appreciate any help on this.
SQL> SQL> VAR profile_name VARCHAR2(30);
SQL> BEGIN
   :profile_name := DBMS_SQLTUNE.ACCEPT_SQL_PROFILE(task_name => 'sql_tuning_task');
END;
/ 2    3    4
BEGIN
ERROR at line 1:
ORA-13786: missing SQL text of statement object "1" for tuning task "sql_tuning_task"
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.DBMS_SQLTUNE_INTERNAL", line 16442
ORA-06512: at "SYS.PRVT_SQLPROF_INFRA", line 31
ORA-06512: at "SYS.DBMS_SQLTUNE", line 7544
ORA-06512: at line 2
SQL> select banner from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

How to pass Array of Java objects to Callable statement

Hi ,
I need to know how can I pass an array of objects to PL/SQL stored procedure using callable statement.
So I am having and array list of some object say xyz which has two attributes string and double type.
Now I need to pass this to a PL/SQL Procedure as IN parameter.
Now I have gone through some documentation for the same and found that we can use ArrayDescriptor tp create array (java.sql.ARRAY).
And we will use a record type from SQL to map this to our array of java objects.
So my question is how this mapping of java object's two attribute will be done to the TYPE in SQL? can we also pass this array as a package Table?
Please help
Thanks

I seem to remember that that is in one of Oracle's online sample programs.
http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/index.html

Problem occured when create a tree table for master-detail view objects using SQL queries?

I am programming a tree table for master-detail view objects using SQL queries and these 2 view objects are not simple singel tables queries, and 2 complex SQL are prepared for master and view objects. see below:
1. Master View object (key attribute is SourceBlock and some varaible bindings are used for this view object.)
SELECT cntr_list.SOURCE_BLOCK,
        sum(
         case when cntr_list.cntr_size_q = '20'
              then cntr_list.cntr_qty
              else 0 end ) as cntr20 ,
        sum(
         case when cntr_list.cntr_size_q = '40'
              then cntr_list.cntr_qty
              else 0 end ) as cntr40 ,
         sum(
         case when cntr_list.cntr_size_q = '45'
              then cntr_list.cntr_qty
              else 0 end ) as cntr45
FROM (
    SELECT yb1.BLOCK_M as SOURCE_BLOCK,
           scn.CNTR_SIZE_Q,
           count(scn.CNTR_SIZE_Q) AS cntr_qty
    FROM SHIFT_CMR scm, SHIFT_CNTR scn, YARD_BLOCK yb1, YARD_BLOCK yb2
    WHERE
    scm.cmr_n = scn.cmr_n
    AND (scm.plan_start_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS')
    OR scm.plan_end_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS'))
    AND scm.shift_mode_c = :ShiftModeCode
    AND scm.end_terminal_c = :TerminalCode
    AND scm.start_terminal_c = yb1.terminal_c
    AND scm.start_block_n = yb1.block_n
    AND substr(scn.start_location_c,(instr(scn.start_location_c,',',1,5)+1),instr(scn.start_location_c,',',1,6)-(instr(scn.start_location_c,',',1,5)+1)) BETWEEN yb1.slot_from_n AND yb1.slot_to_n
    AND scm.end_terminal_c = yb2.terminal_c
    AND scm.end_block_n = yb2.block_n
    AND substr(scn.end_location_c,(instr(scn.end_location_c,',',1,5)+1),instr(scn.end_location_c,',',1,6)-(instr(scn.end_location_c,',',1,5)+1)) BETWEEN yb2.slot_from_n AND yb2.slot_to_n
    AND scn.status_c not in (1, 11)
    AND scn.shift_type_c = 'V'
    AND scn.source_c = 'S'
    GROUP BY yb1.BLOCK_M, scn.CNTR_SIZE_Q
) cntr_list
GROUP BY cntr_list.SOURCE_BLOCK
2. Detail View object (key attributes are SourceBlock and EndBlock and same varaible bindings are used for this view object.)
SELECT cntr_list.SOURCE_BLOCK, cntr_list.END_BLOCK,
        sum(
         case when cntr_list.cntr_size_q = '20'
              then cntr_list.cntr_qty
              else 0 end ) as cntr20 ,
        sum(
         case when cntr_list.cntr_size_q = '40'
              then cntr_list.cntr_qty
              else 0 end ) as cntr40 ,
         sum(
         case when cntr_list.cntr_size_q = '45'
              then cntr_list.cntr_qty
              else 0 end ) as cntr45
FROM (
    SELECT yb1.BLOCK_M as SOURCE_BLOCK,
           yb2.BLOCK_M as END_BLOCK,
           scn.CNTR_SIZE_Q,
           count(scn.CNTR_SIZE_Q) AS cntr_qty
    FROM SHIFT_CMR scm, SHIFT_CNTR scn, YARD_BLOCK yb1, YARD_BLOCK yb2
    WHERE
    scm.cmr_n = scn.cmr_n
    AND (scm.plan_start_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS')
    OR scm.plan_end_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS'))
    AND scm.shift_mode_c = :ShiftModeCode
    AND scm.end_terminal_c = :TerminalCode
    AND scm.start_terminal_c = yb1.terminal_c
    AND scm.start_block_n = yb1.block_n
    AND substr(scn.start_location_c,(instr(scn.start_location_c,',',1,5)+1),instr(scn.start_location_c,',',1,6)-(instr(scn.start_location_c,',',1,5)+1)) BETWEEN yb1.slot_from_n AND yb1.slot_to_n
    AND scm.end_terminal_c = yb2.terminal_c
    AND scm.end_block_n = yb2.block_n
    AND substr(scn.end_location_c,(instr(scn.end_location_c,',',1,5)+1),instr(scn.end_location_c,',',1,6)-(instr(scn.end_location_c,',',1,5)+1)) BETWEEN yb2.slot_from_n AND yb2.slot_to_n
    AND scn.status_c not in (1, 11)
    AND scn.shift_type_c = 'V'
    AND scn.source_c = 'S'
    GROUP BY yb1.BLOCK_M, yb2.BLOCK_M, scn.CNTR_SIZE_Q
) cntr_list
GROUP BY cntr_list.SOURCE_BLOCK, cntr_list.END_BLOCK
3. I create a view link to create master-detail relationship for these 2 view objects.
masterview.SourceBlock (1)->detailview.SourceBlock (*).
4. I create a tree table using these 2 view objects with master-detail relationship.
When I set default value for variable bindings of these 2 view objects and the matching records exist, tree table can work well. I can expand the master row to display detail row in UI.
But I need to pass in dymamic parameter value for variable bindings of these 2 view objects, tree table cannnot work again. when I expand the master row and no detail row are displayed in UI.
I am sure that I pass in correct parameter value for master/detail view objects and matching records exist.
Managed Bean:
        DCIteratorBinding dc = (DCIteratorBinding)evaluteEL("#{bindings.MasterView1Iterator}");
        ViewObject vo = dc.getViewObject();
        System.out.println("Before MasterView1Iterator vo.getEstimatedRowCount()="+ vo.getEstimatedRowCount());
        System.out.println("Before MasterView1Iterator ShiftModeCode="+ vo.ensureVariableManager().getVariableValue("ShiftModeCode"));
        vo.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
        vo.ensureVariableManager().setVariableValue("DateTo", dateTo);
        vo.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
        vo.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
        vo.executeQuery();
        System.out.println("MasterView1Iterator vo.getEstimatedRowCount()="+ vo.getEstimatedRowCount());
        DCIteratorBinding dc1 = (DCIteratorBinding)evaluteEL("#{bindings.DetailView1Iterator}");
        ViewObject vo1 = dc1.getViewObject();
        System.out.println("Before DetailView1Iterator vo1.getEstimatedRowCount()="+ vo1.getEstimatedRowCount());
        System.out.println("Before DetailView1Iterator ShiftModeCode="+ vo1.ensureVariableManager().getVariableValue("ShiftModeCode"));
        vo1.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
        vo1.ensureVariableManager().setVariableValue("DateTo", dateTo);
        vo1.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
        vo1.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
        vo1.executeQuery();
        System.out.println("after DetailView1Iterator vo1.getEstimatedRowCount()="+ vo1.getEstimatedRowCount());
5. What's wrong in my implementation? I don't have no problem to implement such a tree table if using simple master-detail tables view object, but now I have to use such 2 view objects using complex SQL for my requirement and variable bindings are necessary for detail view object although I also think a bit strange by myself.

Hi Frank,
Thank you and it can work.
public void setLowHighSalaryRangeForDetailEmployeesAccessorViewObject(Number lowSalary,
                                                                          Number highSalary) {
        Row r = getCurrentRow();
        if (r != null) {
            RowSet rs = (RowSet)r.getAttribute("EmpView");
            if (rs != null) {
                ViewObject accessorVO = rs.getViewObject();
                accessorVO.setNamedWhereClauseParam("LowSalary", lowSalary);
                accessorVO.setNamedWhereClauseParam("HighSalary", highSalary);
            executeQuery();
but I have a quesiton in this way. in code snippet, it is first getting current row of current master VO to determine if update variables value of detail VO. in my case, current row is possibly null after executeQuery() of master VO and I have to change current row manually like below.
any idea?
            DCIteratorBinding dc = (DCIteratorBinding)ADFUtil.evaluateEL("#{bindings.SSForecastSourceBlockView1Iterator}");
            ViewObject vo = dc.getViewObject();
            vo.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
            vo.ensureVariableManager().setVariableValue("DateTo", dateTo);
            vo.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
            vo.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
            vo.executeQuery();
            vo.setCurrentRowAtRangeIndex(0);
            ((SSForecastSourceBlockViewImpl)vo).synchornizeAccessorVOVariableValues();

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