Wait for commit to finish
Hello,
I am calling a standard function that update some tables and at the end execute a commit work without the wait clause, but right after the execution of the standard function I need to perform some operations that needs all the tables to be updated, so unfortunatelly I needed commit work and wait inside the standard function.
As I cannot change the standard function I tried to use table VBHDR to check when the update process finish but I noticed in my system this table is not trustfull as there are lots of garbage there with field VBRC = 1.
So my question is how can I wait for the commit work to finish in this situation?
Regards,
Mauricio
well this a random approach but u can try this.
use WAIT UP TO n seconds give the vales as some 120 or 180 seconds.
but u cant be sure if its stable all the time.
Or u can try and call the function with the addition IN UPDATE TASK
кu03B1ятu03B9к
Edited by: kartik tarla on Jan 5, 2009 6:41 PM
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Calling nested function to perform DML and wait for commit
Hi everybody,
I would like to do some DML -- an insert statement, to be specific -- in a function and have the function then return the numeric key of the newly added row. I call this function from another context and woud then be able to use the newly added data to do some stuff.
More specifically, what I am going to do is this: I have a graph consisting of source, destination and distance triplets in a table. A user should now be able to
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I have an inner function function INSERT_NEW_NODE(node_in in sdo_geometry, graph_in in integer) return integer
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pragma autonomous_transaction;
cursor node_cur is
select
source,
source_geom
from graph
cursor edge_cur is
select
source,
destination,
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edge_geom
from
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ID,
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DESTINATION,
DISTANCE,
SOURCE_GEOM,
DESTINATION_GEOM,
EDGE_GEOM
values
graph_id_seq.nextval, --id
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ID,
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is
source number;
destination number;
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destination_geom mdsys.sdo_geometry;
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destination := insert_new_node(get_lastvertex(line_in), graph_in);
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-- destination := insert_new_node(get_lastvertex(line_in), graph_in);
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So here's my questions: 1.) Why do I have to call the function twice to see the transaction complete? and 2.) How can I avoid that? Is there a way to wait with the execution of the return statement in the inner function until the insert is committed and can be seen by the outer function?
Cheers!Tanks, everybody, for your replies! Let me go through them one by one
smon asked: if you remove the pragma statement, does it work then?No, it does not, at least not, if I call the function from the outer function. In this case the insert statements in the inner function are not committed.
If I call the inner function like thisDECLARE
NODE_IN SDO_GEOMETRY;
GRAPH_IN NUMBER;
v_Return NUMBER;
BEGIN
NODE_IN := MDSYS.SDO_GEOMETRY(2001,<srid>,MDSYS.SDO_POINT_TYPE(<x>,<y>,<z>),NULL,NULL);
GRAPH_IN := 3;
v_Return := INSERT_NEW_NODE(
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GRAPH_IN => GRAPH_IN
DBMS_OUTPUT.PUT_LINE('v_Return = ' || v_Return);
:v_Return := v_Return;
END;, it works without autonomous transaction, but then again like this I do not use the handle to access the newly inserted data immediately to perform some other task with it.
sb92075 said:COMMIT inside LOOP is sub-optimal implementation (increases elapsed time) & can result in ORA-01555 error.Thanks, that was very helpful; I changed my code to commit outside of the loop, just before the return statement and it performs a lot faster now.
user1983440, regarding my statement I think, I have to use automous transaction in the inner function, so that the outer function can see any change performed by the inner one. asked: Are you certain that this is true? No, anything but certain. I should have said "It +seems+, I have to use autonomous transaction". I wish it would work without autonomous transaction, I think it actually should and I wonder why it does not. However, if I do not use autonomous transaction, the outer function seems to try to access the data that I have inserted in the inner function before it is committed, throws a no-data-found-exception, hence a rollback is performed.
davidp 2 said:The outer function will see whatever the inner function has done, without commit or autonomous transaction [...] In PL/SQL, the default commit is COMMIT WRITE NOWAIT, which I think does mean the transaction might not be instantly visible to the outside transaction, because the call returns before the commit really finishes. Yes, that is my notion, too. However, without autonomous transaction the inner function completes without error, then the outer uses the handles returned by the inner function to call the function <font face="courier">get_path_geom()</font> which cannot find the handles in the graph-table which raises an exception and causes a rollback.
Let me summarize: The inner function completes fine, without and with autonomous transaction and returns the handle. The inner function commits, if called directly, without and (of course) with autonomous transaction. The outer function does not see the data inserted by the inner function immediately, whether without or with autonomous transaction. If I let the outer function call the inner function twice (4 times, to be specific, but twice for each newly inserted row) from the outer function and do not use autonomous transaction, I get a no-data-found exception. If I let the outer function call the inner function twice and do use autonomous transaction, it works.
I agree with everything that was said about not using autonomous transaction in this case and I still want to solve this the right way. Any ideas are welcome! -
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Edited by: ratcateme on Nov 20, 2008 3:02 PMYou don't have to do anything to do that
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final3.vi 49 KB -
Quiz slide waits for Audio to finish before proceeding to next question
Hi guys, hope you can help. I have 5 questions with audio inside narrating the question and the answer in selection. Once you you have chosend your answer then click submit button..it waits until the audio finishes then proceeds to the next question.
hope you can help
Thank youHaving this action on Slide Exit of the Quiz Results slide may not work if the user clicks a button there to Review Quiz because that will mean that the last frame of the Quiz Results slide doesn't get played.
There is an internal Captivate system variable that gets set on each question slide when it's in Review Mode, but I don't think you can read this variable via Advanced Actions. If you could read it, you could check it and then trigger the mute action on Slide Enter of each question slide.
UPDATE: Just thought of another possible workaround. There's a system variable called cpInfoPrevSlide that records the last slide you visited before the current one. You could use this in a conditional action to trigger cpCmndMute. When the user clicks Review Quiz on the Quiz Results slide it will take them back to the first scoring object in the Quiz Scope. OnSlideEnter of this slide you need to check whether or not cpInfoPrevSlide is the Quiz Results slide, and if it is, set cpCmndMute to 1. That should turn off the audio on the slides from then on.
For instruction audio on the Quiz Results slide I prefer to have the audio attached to a rollover caption. That way, the user only gets the audio if they explicitly roll over the HELP button (or whatever you call it). -
Automator doesn't wait for app to finish launching.
During "watch me do" actions that lauch an app Automator does not wait for the app to launch. This seems like a bug since Automator does infact know it is launching an app, this shouldn't be something that should require a sleep every time.
Did you try one these actions?
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Friends,
My iPad2 was locked and disabled because my kids entered several times the passcode and now it is locked. I tried every possible ways and read all related items and followed precisely articel http://support.apple.com/kb/HT1212 but after i restored and update teh iPad, itunes keeps giveing me the same message:
The iPad "iPad" cannot be restored at this time because the iPad software update server could not becontacted or is temporarily unavailable.
I tired at different time of teh day and noght and different days yet kept getting the same message.
Pls assist me as now the iPad is useless
Regards,
JoeIf reset doesn't work, try and force the iPad into Recovery Mode.
Recovery Mode
1. Disconnect the USB cable from the device, but leave the other end of the cable connected to your computer's USB port.
2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the device to turn off.
3.While pressing and holding the Home button, reconnect the USB cable to the device. The device should turn on.
4. Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears, release the Home button. iTunes should alert you that it has detected a device in recovery mode. Click OK, and then click Restore to restore the device.
Note: Data will be lost. You may have to repeat the above many times. -
Wait for song to finish applescript
I would like to have an applescript that will use the if statment to test if the selected song it finished and to pause the script until it does
Well, without seeing more code, it is hard to tell for sure. What you may want to do, is to wrap your refresh in a synchronized block and wait, and then have your Form, a separate Thread I presume, notify when it is finished.
public void add() {
new TeamAdd(this); // pass this so you can notify later
synchronized (this) {
this.wait(); // wait until notified
refresh();
} Of course, you will have to put the corresponding notify() on the passed Object when you are through with it in TeamAdd, otherwise your main thread will hang forever.
Hope this helps -
Wait for progressbar to finish then continue code?
How would you create a program where you have to type a number in numericupdown which will change the progressbar's value number and
then click button1. When click button1 you will be navigated to google.com and then progressbar will start. when progressbar is finished navigate to bing.com. Does anyone know how to do this?
Thanks in Advance!I haved moved question to C# which can be found here: New
Forum Question
Hello,
I have helped you move this thread to winform forum before you post the reply above.
In addition, I found that you have got this issue resolved in that thread.
Regards,
Carl
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Waiting for Thread to finish execution
I have a program which uses a thread to copy files. While they are copying, a ProgressMonitor comes up displaying the current file being copied. After this has completed, my main program needs to be notified and go on with it's own code. Either I get the 'I'm done waiting!' message instantly, or not at all, instead of getting it after the thread completes. How do I do this?
This is what I currently have
// CLASS 1 //
//...other code is here
myMethod()
ProgressMonitorDemo pmd = new ProgressMonitorDemo();
while (!pmd.isDone())
{ wait(); }
System.out.println( "I'm done waiting!" );
}//Class 2 //
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
public class ProgressMonitorDemo extends JPanel
public final static int ONE_SECOND = 1000;
private ProgressMonitor progressMonitor;
private Timer timer;
private LongTask task;
public ProgressMonitorDemo()
task = new LongTask();
timer = new Timer( ONE_SECOND, new TimerListener() );
progressMonitor = new ProgressMonitor( this, "Running a Long Task", "", 0, task.getLengthOfTask() );
progressMonitor.setProgress( 0 );
progressMonitor.setMillisToDecideToPopup( 2 * ONE_SECOND );
task.go( );
timer.start();
public boolean isDone()
return task.isDone();
* The actionPerformed method in this class
* is called each time the Timer "goes off".
class TimerListener implements ActionListener
public void actionPerformed( ActionEvent evt )
progressMonitor.setProgress( task.getCurrent() );
String s = task.getMessage();
if( s != null )
progressMonitor.setNote( s );
if( progressMonitor.isCanceled() || task.isDone() )
progressMonitor.close();
task.stop();
Toolkit.getDefaultToolkit().beep();
timer.stop();
}// CLASS 3 //
import javax.swing.*;
import java.io.*;
import java.awt.dnd.DnDConstants;
public class LongTask
private int lengthOfTask;
private int current = 0;
private boolean done = false;
private boolean canceled = false;
private String statMessage;
public LongTask()
//Compute length of task...
//In a real program, this would figure out
//the number of bytes to read or whatever.
lengthOfTask = 400;
* Called from ProgressBarDemo to start the task.
public void go( )
final SwingWorker worker = new SwingWorker()
public Object construct()
current = 0;
done = false;
canceled = false;
statMessage = null;
return new CopyMove();
worker.start();
* Called from ProgressBarDemo to find out how much work needs
* to be done.
public int getLengthOfTask()
return lengthOfTask;
* Called from ProgressBarDemo to find out how much has been done.
public int getCurrent()
return current;
public void stop()
canceled = true;
statMessage = null;
* Called from ProgressBarDemo to find out if the task has completed.
public boolean isDone()
return done;
* Returns the most recent status message, or null
* if there is no current status message.
public String getMessage()
return statMessage;
* The actual long running task. This runs in a SwingWorker thread.
class CopyMove
private String currOldLoc, currNewLoc, type;
CopyMove()
while( current < lengthOfTask )
try
Thread.sleep( 1000 );
current += Math.random() * 100; //make some progress
if( current > lengthOfTask )
current = lengthOfTask;
statMessage = "Completed " + current + " out of " + lengthOfTask + ".";
catch( Exception e )
System.out.println( "<ERROR>: Long Task " + e.toString() );
}I tried this but it froze...
public void myMethod()
ProgressMonitorDemo pmd = new ProgressMonitorDemo( );
synchronized( pmd )
try
pmd.wait();
catch(Exception e){}
System.out.println( "I'm done waiting!" );
}Class 2
class CopyMove
private String currOldLoc, currNewLoc, type;
CopyMove()
while( current < lengthOfTask )
try
Thread.sleep( 1000 );
current += Math.random() * 100; //make some progress
if( current > lengthOfTask )
current = lengthOfTask;
statMessage = "Completed " + current + " out of " + lengthOfTask + ".";
catch( Exception e )
System.out.println( "<ERROR>: Long Task " + e.toString() );
synchronized(this)
notifyAll(); -
VI waiting for another VI finishing before completing
Howdy
i have a goniometer.vi which should move the detectorarm 1°, then starts a spectrometer.vi and measures the spectrum. after completing measurements the goniospectrometer.vi should move another 1° and again...
i have made the spectrometer.vi a sub.vi and wanted to include it into goniometer.vi, but i have no idea how to tell the goniometer.vi that spectrometer.vi is ready for moving on.
thanks
RobertUse a while loop. Make sure that both subvi's (goniometer and spectrometer) have error in and error out. Call the goniometer vi first and spectrometer second, wire error out from the first to error in of the second. Put some kind of exit condition to stop the loop. The first vi will execute, then when it is done the second will execute. The process will repeat until the stop condition is met.
- tbob
Inventor of the WORM Global
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