Handling two blocks in a canvas

I have two block namely "emp" and "dept" and I want to execute query in each block on a single button click.
when the cursor is in "emp" table then the "emp" data should be display and vice versa.

Hi
I want to execute query in each block on a single button click.1. The good approach is to create a relation between the two block ...
2.Then in WHEN-BUTTON-PRESSED Trigger pls use
GO_BLOCK('dept');
EXECUTE_QUERY;The relation will fetch the employees according to their related department they hired within the company.
Hope this helps...
Regards,
Ammatu Allah.

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hi i am yugandhar!
i just wanted to know whether i can open two blocks at a time if
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Is-it normal to face situation where the "Reference Handler" is blocked?

Hi all,
I would like to know if it can be a normal behavior to have the "Reference Handler" thread from the class java.lang.ref.Reference in BLOCKED state in my thread dump (generated from visualvm) as you can see below.
"http-0.0.0.0-8080-56" - Thread t@578
   java.lang.Thread.State: RUNNABLE
at org.apache.lucene.index.TermBuffer.toTerm(TermBuffer.java:122)
at org.apache.lucene.index.SegmentTermEnum.term(SegmentTermEnum.java:167)
at org.apache.lucene.index.SegmentMergeInfo.next(SegmentMergeInfo.java:66)
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   JNI locked monitors:
- locked <5258ed3e> (a java.lang.ref.Reference$Lock)
   Locked ownable synchronizers:
- None
"Reference Handler" - Thread t@2
   java.lang.Thread.State: BLOCKED
at java.lang.Object.wait(Native Method)
- waiting on <5258ed3e> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:485)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
   Locked ownable synchronizers:
- NoneAs you can see in my thread dump the object "java.lang.ref.Reference$Lock" is locked by a common thread which has for consequences to annoy a lot the GC and to freeze the whole application. Regarding the code (http://kickjava.com/src/java/lang/ref/Reference.java.htm) since the class java.lang.ref.Reference$Lock is private and the field "lock" is also (static) private, I was wondering if it is normal that this field can be locked by a common thread and if so can you tell me why and how (by reflection I assume like my example below)? Can it be a JVM Bug?
This issue makes me realized that any Java application without a Security Manager installed can be easily frozen thanks to this simple code:
      // The thread that will steal the lock to the "Reference Handler" to block the GC and then the whole application
      new Thread("Reference$Lock Holder Thread")
         public void run()
            try
               // Get the lock field by reflection
               Field fieldLock = Reference.class.getDeclaredField("lock");
               // Make it accessible
               fieldLock.setAccessible(true);
               // Get the static lock object
               Object o = fieldLock.get(null);
               Object mutex = new Object();
               // Lock the lock object
               synchronized (o)
                  // Wait forever
                  synchronized (mutex)
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      }.start();
      // This is a simple code used to simulate normal object creation until the GC call
      for (int i = 1;;i++)
         new Object();
         if ((i % 1000) == 0)
            System.out.println(i);
      }NB: This issue has been occured on RHEL 5.3 et JVM Sun 1.6 u26 (64 bit)
Thanks for helping,
BR,
Nicolas

essobedo wrote:
I did not understand that from the javadoc by "javadoc on that field" you mean this :
/* Object used to synchronize with the garbage collector. The collector
* must acquire this lock at the beginning of each collection cycle. It is
* therefore critical that any code holding this lock complete as quickly
* as possible, allocate no new objects, and avoid calling user code.
So for you it is normal that the normal thread "http-0.0.0.0-8080-56" holds the lock expected by the "Reference Handler" and 20 other normal threads? If so do you have any idea why it works like this? Is-it how the GC works internally?if those threads are doing garbage collection work, then yes, they will be holding that lock (which is exactly what the javadoc says).

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Hi ,
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strdet
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Thanks ,,,
Sim

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Hiii
How to create relation between two blocks which are based on different stored procedures in Oracle form??
Pradhyumn Sharma

hiii,
I selected the common key deptno in both procedure.
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==================================
PACKAGE emp_pkg AS
TYPE emprec IS RECORD(
empno asg_emp.empno%type,
ename asg_emp.ename%type,
job asg_emp.job%type,
sal asg_emp.sal%type,
deptno asg_emp.deptno%type);
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PROCEDURE empquery(block_data IN OUT emptab, p_deptno IN NUMBER);
end;
====================================
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type rec is record(dname asg_dept.dname%type,
loc asg_dept.loc%type,
deptno asg_dept.deptno%type);
type deptrec is table of rec index by binary_integer;
PROCEDURE dept_rec1(block1 in out deptrec);
END;
===================================
In ON-CHECK-DELETE-MASTER
CURSOR BLOCK9_cur IS
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Regards
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(and then eventually when the user clicks on button a missing record in block B it will fill in the details from various places in the database and the new entry(ies) in Block B can be saved back to Table B. )
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3 2/2/2012                                   (paperwork not done yet so B record missing)
14 2/3/2012     14 paperwork done
11 2/4/2012                                    (paperwork not done yet so B record missing)Edited by: lake on Feb 16, 2012 4:45 PM

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Moderator message - You'll find some cool tips if you search the forum or use Google first - post locked
Edited by: Rob Burbank on Dec 7, 2009 11:20 AM

hi
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Hai All
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Or
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If numeric
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