Wait on Queue from multiple

There is a Wait on Notifier from multiple vi, can I do the same with Queue? Any way to work around that?

Dohhh! You're right.
I was just looking through the synchronization palletes the other day because I was thinking of a notification to be a part of a communication scheme I was fleshing out. I skimmed through the wait on Multiple, must not have read it correctly, or just didn't remember it correctly. The title of it makes me think of the way I had just written it up. If I say "I'm waiting on 5 people" in normal English, that means I'm waiting for 5 people to each give me their information before I can move on. So when I read of the Wait on Notification Multiple, that is the way I think of it. In reality, the definintion is more like "I'm waiting on ANY of 5 people" so if any of those 5 give me their information, I can move on.
Thanks for straightening me out.
I can't think of what would be the ideal scenario for using that particular VI. I think my most common use cases would be to use either a Queue (for a many to one, multiple data) or a Notifier (in one to one, many to one, one to many, or many to many scenario, single piece of data with those possible combinations in order from most likely to use, to very unlikely to use)

Similar Messages

Consuming queue from multiple processes

We have a program designed to consume a queue with consumer name set to "consumer". Here's how it dequeues messages:
dequeue_options.consumer_name := 'Consumer';
dequeue_options.navigation := DBMS_AQ.FIRST_MESSAGE;
dequeue_options.WAIT := 10;
DBMS_AQ.DEQUEUE(queue_name => 'ourschema.our_que',
dequeue_options => dequeue_options,
message_properties => message_properties,
payload => message,
msgid => message_handle);
If we run one instance of this program this dequeue operation above uses 10 CPU seconds over the duration of our load test. If we run two instances of the program (which consumes the same queue as the same consumer) then the dequeue operation above uses 160 CPU seconds. We need the second instance to remove a single point of failure but the 16 fold increase in load on our database is not acceptable for a dequeue operation.
Why is it so expensive to have two processes dequeuing from our_queue using the same consumer name?
thanks
Dale

We managed to solve the problem.
We had initiated a transaction to bracket the dequeue and a subsequent insert. Removing the transaction seems to have removed the performance hit from the second process.

Wait on Notification from Multiple behaves the same with or without History

I'm running this VI on a cRIO-9066, and both "Wait" functions behave the same. After reading the LV Help, I would expect the "With Notifier History" one to return an array of two elements, not one. Is this a bug?
(Attachment is LV 2014 SP10
Solved!
Go to Solution.
Attachments:
Untitled 2.vi ‏11 KB

Staab_Engineering wrote:
After reading the LV Help, I would expect the "With Notifier History" one to return an array of two elements, not one.
Why? Unlike the help for W4MN, the one for W4MNWH is not explicit in saying that it continues as soon as one of the notifiers gets a notification, but it also doesn't say it will wait for all of them. Your example clearly shows that it continues as soon as at least one has a notification.
I'm too tired at the moment to work through the W4MNWH use cases, so I have no particular expectation for how it should behave.
Try to take over the world!

Issue listeneing queue from Weblogic Cluster server with multiple managed server

Haveing issue listeneing queue from Weblogic Cluster server with multiple managed server.
Weblogic Cluster structure is like
Weblogic Cluster01
--ManagedServer01(http://server01.myhost.com:7001)
--ManagedServer02(http://server02.myhost.com:7001)
JMS Servers
JMSserver01 targeting: ManagedServer01
JMSserver02 targeting: ManagedServer02
JMSmodule
ConnectionFactory01 targeting:JMSserver01,JMSserver02
UDQueue01 targeting:JMSserver01,JMSserver02
Uniform Distributed Queue in Monitoring tab showing like this
mysystemmodule!JMSserver01@UDQueue01
mysystemmodule!JMSserver02@UDQueue01
So when I am sending message to any Host(by specifying the provider URL) its distributing equally on both server like
mysystemmodule!JMSserver01@UDQueue01 10
mysystemmodule!JMSserver02@UDQueue01 10
But when try to listen message from these queue, it is listening from one server, for which URL given to connect.
mysystemmodule!JMSserver01@UDQueue01 0
mysystemmodule!JMSserver02@UDQueue01 10
untill I connect to other server by giveing its URL, will not able to access other message left on the queue.
Solutions that tried
1) we have tried give both server URL coma sparated in provider URL
we need to configur same scenario for 5 managed server with 3 listener on other servers.
Do any one have solution for this.

You need to have:
1. Consumers connected to each UDQ member
OR
2. If no consumers in some of the members is expected, you can configure Forward Delay (specify the amount of time, in seconds, that a queue member with messages, but with no consumers, will wait before forwarding its messages to other queue members that do have consumers):
http://docs.oracle.com/cd/E12839_01/apirefs.1111/e13952/taskhelp/jms_modules/distributed_queues/ConfigureUDQGeneral.html
For example you can set it to 10 (10s)
Additional Information here:
http://docs.oracle.com/cd/E23943_01/web.1111/e13727/dds.htm#i1314228
http://docs.oracle.com/cd/E23943_01/apirefs.1111/e13951/mbeans/DistributedQueueBean.html?skipReload=true#ForwardDelay
How Does JMS Load Balancing Work with Distributed Queues and Uniform Distributed Queues? (Doc ID 827294.1)
I hope this helps
Best Regards
Luz

How can a JMS adapter be configured in BPEL to consume messages from multiple queues ?

How can a JMS adapter be configured in BPEL to consume messages from multiple queues ?

If you want to use JMS with AQ as datastore then there is some configuration you need to do to enable this. This is outside SOA Suite per sa, e.g. no adapter required.
If you want to connect to the AQ direct then use the AQ adapter.
this blog may be of some help understand the configuration
http://biemond.blogspot.com/2008/01/oracle-jms-with-esb-and-bpel.html
cheers
James

Synchronize work from multiple threads using wait() and notifyAll() help

Hello folks,
(Sorry for my bad english)
My current project handles multiple access requests to a shared collection from multiple threads originating from different classess and methods. Therefor I need to keep track of the order in which the Threads access that collection. I wrote a sort of Buffer class that has a static instance entry which initiate a new Instance of my Buffer class, attributes the instance a cue number and return the instance to the caller Thread.(Just like when you go to a supermarket and draw a number to wait to get served at the cheese counter).The callerThread then uses this instance to execute a method within the buffer class. Inside the buffer class method, I want to set a while loop on wait() just like this:
while(currentCue != myCueState)
wait();
when all other prior method calls within my Buffer class are done, the loop should wake up using a notifyAll() call and check the condition "currentCue != myCueState" agen to see if its turn has come.
I am new to the wait() and notifyAll() stuff and are therefor not sure what I am dooing wrong here: The only way this buffer class finishes all it's cues is when the caller Threads are beeing executed in the same order than they have checked in to the Buffer class. Otherwise I get some sort of dead-lock in the middle. Here is my code for the Buffer class:
public class Buffer{
    private static int currentCue = 0;
    private static int lastCued = 0;
    private int myCueState;
    private Buffer myInstance = null;
    synchronized void doTaskOne(){
        try{
            while(currentCue != myCueState)
                wait();
            //Do your task now
            System.out.println("doTaskOne got Executed: "+currentCue);
            currentCue++;
            notifyAll();
        catch(Exception a){}
    synchronized void doTaskTwo(){
         try{
            while(currentCue != myCueState)
                wait();
            //Do your task now
            System.out.println("doTaskTwo got Executed: "+currentCue);
            currentCue++;
            notifyAll();
        catch(Exception a){}
    synchronized void doTaskThree(){
        try{
            while(currentCue != myCueState)
                wait();
            //Do your task now
            System.out.println("doTaskThree got Executed: "+currentCue);
            currentCue++;
            notifyAll();
        catch(Exception a){}
    synchronized Object getSomething(){
        try{
            while(currentCue != myCueState)
                wait();
            //Do your task now
            System.out.println("getSomething got Executed");
            currentCue++;
            notifyAll();
        catch(Exception a){}
        return "something";
    //Access the buffer class through a single static synchronized instance and draw a turn number
    public synchronized Buffer instance(){
        myInstance = new Buffer();
        myInstance.setMyCueState();
        return myInstance;
    private void setMyCueState(){
         myCueState = lastCued;
         lastCued++;
}and here for the Test class I have coded to test this:
public class TestBuffer{
     private Buffer accessOne;
     private Buffer accessTwo;
     private Buffer accessThree;
     private Buffer accessFour;
     public TestBuffer(){
                //Instantiate different instances from Bufferclass and draw a number
          accessThree = new Buffer().instance();
          accessOne = new Buffer().instance();
          accessTwo = new Buffer().instance();
          accessFour = new Buffer().instance();
          Thread one = new Thread(){
               public void run(){
                    accessOne.doTaskOne();
          Thread two = new Thread(){
               public void run(){
                    accessTwo.doTaskTwo();
          Thread three = new Thread(){
               public void run(){
                    accessThree.doTaskThree();
          Thread four = new Thread(){
               public void run(){
                    accessFour.getSomething();
          try{
               one.start();
               two.start();
               three.start();
               four.start();
          catch(Exception f){}
     public static void main(String args[]){
          TestBuffer myTest = new TestBuffer();
}What am I doing wrong here??
Maby this is not how I should use the notifyAll() method, but how then?
Please give me a solution!
Thanks

Ok, so if I get you guys right, the following should do it:
public class Buffer{
    private static Object sharedLock = new Object();
    public void doTaskOne(){
          synchronized(sharedLock) {
            System.out.println("doTaskOne got Executed: ");
    public void doTaskTwo(){
         synchronized(sharedLock) {
            System.out.println("doTaskTwo got Executed: ");
    public void doTaskThree(){
         synchronized(sharedLock) {
              System.out.println("doTaskThree got Executed: ");
    public Object getSomething(){
        synchronized(sharedLock) {
            System.out.println("getSomething got Executed");
            return "something";
}Lets say that each method accesses the same ressources (in this case a table model) to retreave values, delete rows and set some existing values vith new values and all this 20-30 times a minute, all processing will stay synchronised and collision is not possible?
And lets say I would update the Table model directly from the buffer Class using MyTableModel.instance().setValueAt() or watever methods I implemented on my Table model, could I safely do that using "SwingUtilities.invokeLater();" from my BufferClass just like this:
public void doTaskThree(){
        synchronized(sharedLock) {
               Runnable runme = new Runnable(){
                     public void run(){
                            MyTableModel.instance().setValueAt("abc", 5,5);
               SwingUtilities.invokeLater(runme);
}Thanks in advance for your help guys!

Accessing the same stateful session bean from multiple clients in a clustered environment

I am trying to access the same stateful session bean from multiple
          clients. I also want this bean to have failover support so we want to
          deploy it in a cluster. The following description is how we have tried
          to solve this problem, but it does not seem to be working. Any
          insight would be greatly appreciated!
          I have set up a cluster of three servers. I deployed a stateful
          session bean with in memory replication across the cluster. A client
          obtains a reference to an instance of one of these beans to handle a
          request. Subsequent requests will have to use the same bean and could
          come from various clients. So after using the bean the first client
          stores the handle to the bean (actually the replica aware stub) to be
          used by other clients to be able to obtain the bean. When another
          client retrieves the handle gets the replica aware stub and makes a
          call to the bean the request seems to unpredictably go to any of the
          three servers rather than the primary server hosting that bean. If the
          call goes to the primary server everything seems to work fine the
          session data is available and it gets backed up on the secondary
          server. If it happens to go to the secondary server a bean that has
          the correct session data services the request but gives the error
          <Failed to update the secondary copy of a stateful session bean from
          home:ejb20-statefulSession-TraderHome>. Then any subsequent requests
          to the primary server will not reflect changes made on the secondary
          and vice versa. If the request happens to go to the third server that
          is not hosting an instance of that bean then the client receives an
          error that the bean was not available. From my understanding I thought
          the replica aware stub would know which server is the primary host for
          that bean and send the request there.
          Thanks in advance,
          Justin


          If 'allow-concurrent-call' does exactly what you need, then you don't have a problem,
          do you?
          Except of course if you switch ejb containers. Oh well.
          Mike
          "FBenvadi" <[email protected]> wrote:
          >I've got the same problem.
          >I understand from you that concurrent access to a stateful session bean
          >is
          >not allowed but there is a
          >token is weblogic-ejb-jar.xml that is called 'allow-concurrent-call'
          >that
          >does exactly what I need.
          >What you mean 'you'll get a surprise when you go to production' ?
          >I need to understand becouse I can still change the design.
          >Thanks Francesco
          >[email protected]
          >
          >"Mike Reiche" <[email protected]> wrote in message
          >news:[email protected]...
          >>
          >> Get the fix immediately from BEA and test it. It would be a shame to
          >wait
          >until
          >> December only to get a fix - that doesn't work.
          >>
          >> As for stateful session bean use - just remember that concurrent access
          >to
          >a stateful
          >> session bean is not allowed. Things will work fine until you go to
          >production
          >> and encounter some real load - then you will get a surprise.
          >>
          >> Mike
          >>
          >> [email protected] (Justin Meyer) wrote:
          >> >I just heard back from WebLogic Tech Support and they have confirmed
          >> >that this is a bug. Here is their reply:
          >> >
          >> >There is some problem in failover of stateful session beans when its
          >> >run from a java client.However, it is fixed now.
          >> >
          >> >The fix will be in SP2 which will be out by december.
          >> >
          >> >
          >> >Mike,
          >> >Thanks for your reply. I do infact believe we are correctly using
          >a
          >> >stateful session bean however it may have been misleading from my
          >> >description of the problem. We are not accessing the bean
          >> >concurrently from 2 different clients. The second client will only
          >> >come into play if the first client fails. In this case we want to
          >be
          >> >able to reacquire the handle to our stateful session bean and call
          >it
          >> >from the secondary client.
          >> >
          >> >
          >> >Justin
          >> >
          >> >"Mike Reiche" <[email protected]> wrote in message
          >news:<[email protected]>...
          >> >> You should be using an entity bean, not a stateful session bean
          >for
          >> >this application.
          >> >>
          >> >> A stateful session bean is intended to be keep state (stateful)
          >for
          >> >the duration
          >> >> of a client's session (session).
          >> >>
          >> >> It is not meant to be shared by different clients - in fact, if
          >you
          >> >attempt to
          >> >> access the same stateful session bean concurrently - it will throw
          >> >an exception.
          >> >>
          >> >> We did your little trick (storing/retrieving handle) with a stateful
          >> >session bean
          >> >> on WLS 5.1 - and it did work properly - not as you describe. Our
          >sfsb's
          >> >were not
          >> >> replicated as yours are.
          >> >>
          >> >> Mike
          >> >>
          >> >> [email protected] (Justin Meyer) wrote:
          >> >> >I am trying to access the same stateful session bean from multiple
          >> >> >clients. I also want this bean to have failover support so we want
          >> >to
          >> >> >deploy it in a cluster. The following description is how we have
          >tried
          >> >> >to solve this problem, but it does not seem to be working. Any
          >> >> >insight would be greatly appreciated!
          >> >> >
          >> >> >I have set up a cluster of three servers. I deployed a stateful
          >> >> >session bean with in memory replication across the cluster. A client
          >> >> >obtains a reference to an instance of one of these beans to handle
          >> >a
          >> >> >request. Subsequent requests will have to use the same bean and
          >could
          >> >> >come from various clients. So after using the bean the first client
          >> >> >stores the handle to the bean (actually the replica aware stub)
          >to
          >> >be
          >> >> >used by other clients to be able to obtain the bean. When another
          >> >> >client retrieves the handle gets the replica aware stub and makes
          >> >a
          >> >> >call to the bean the request seems to unpredictably go to any of
          >the
          >> >> >three servers rather than the primary server hosting that bean.
          >If
          >> >the
          >> >> >call goes to the primary server everything seems to work fine the
          >> >> >session data is available and it gets backed up on the secondary
          >> >> >server. If it happens to go to the secondary server a bean that
          >has
          >> >> >the correct session data services the request but gives the error
          >> >> ><Failed to update the secondary copy of a stateful session bean
          >from
          >> >> >home:ejb20-statefulSession-TraderHome>. Then any subsequent requests
          >> >> >to the primary server will not reflect changes made on the secondary
          >> >> >and vice versa. If the request happens to go to the third server
          >that
          >> >> >is not hosting an instance of that bean then the client receives
          >an
          >> >> >error that the bean was not available. From my understanding I
          >thought
          >> >> >the replica aware stub would know which server is the primary host
          >> >for
          >> >> >that bean and send the request there.
          >> >> >
          >> >> >Thanks in advance,
          >> >> >Justin
          >>
          >
          >

Will apps from multiple accounts sync on one device

When I first started using iTunes I was too young to have an iTunes account so I used my mums to make purchases to sync to my iPad via the computer. A few years later I had created my own account when I got my laptop mainly to purchase movies to watch and music for my iPod however the email I used I no longer use as it keeps getting spammed.
I recently purchased a new iPad via the apple store(waiting for delivery) which I made a new apple account for what I am wondering is that as I did all of my app syncs for my old iPad via my computer all my apps are on my iTunes on my laptop however I was wondering if I were able to sync up my apps, music and new apps to my new device via my laptop without issue as they have come from multiple accounts.

As long as there are five or fewer Apple IDs involved, you won't have a problem syncing the content. Note that the applications can only be updated from the Apple ID used to download them, and this may also apply to in-app purchases.
(120742)

Saving string from multiple clients on a server data structue

I have a server which receives updates from multiple clients ( in this example, football scores which are updated periodically by the clients.)
When the server receives the scores it needs to store them and at certain time intervals send the complete list of scores to multiple terminals at various locations.
I am approaching this task in stages...
stage 1.
..create the clients and server ...test the clients can send the data and the server can receive the data and output to screen..
this is completed
stage 2...
a/ on the server side store the received scores in a data structure (ArrayList<String> is what I'm thinking.)
b/ periodically output all scores to the screen (maybe every 30 seconds) and empty the ArrayList..am looking at the Timer class for this part..
stage 3
create the monitors and output scores to monitors periodically..
======================================================
right now I'm at stage 2a ie trying to store the received scores in a data structure.
i've created a method saveScore in the StoreScore class which is called by the StoreScore run method...
The saveScore method creates an ArrayList and adds the score to it...
Question
does every thread create a new instance of storedScores and therefore the scores are stored in a multitude of data structures?
I think the answer is yes and if so then this is not the solution...
What I'm thinking is , as all scores can be outputted to the server screen via System.out.println, is there not a way of saving all these scores in a single data structure?
The code below is the server code..
any advice much appreciated....thank you
/*=============================================================== */
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.concurrent.*;
class ScoresServer1{
final static int portNum = 1234; // any number > 1024
final static int numThreads = 10;
static ExecutorService pool;
public static void main(String[] args){
pool = Executors.newFixedThreadPool(numThreads);
System.out.println("Server running ...");
try{
ServerSocket servesock = new ServerSocket(portNum);
// for service requests on port
while (true){
// wait for a service request on port portNum
Socket socket = servesock.accept();
// submit request to pool
pool.submit(new StoreScore(socket));
}catch(IOException e){}
class StoreScore implements Runnable {
BufferedReader reader;
Socket sock;
public StoreScore(Socket clientSOcket) {
try {
sock = clientSOcket;
InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
reader = new BufferedReader(isReader);
} catch (Exception ex) { ex.printStackTrace(); }
public void run() {
String message;
try {
while ((message = reader.readLine()) != null) {
// System.out.println("latest score: " + message);
saveScore(message);
} catch (Exception ex) { ex.printStackTrace(); }
public void saveScore(String message){
     ArrayList<String> storedScores = new ArrayList<String>();
     storedScores.add(message);
     Iterator<String> t = storedScores.iterator();
          while(t.hasNext()){
               String s = t.next();
               System.out.println(s);
}

does every thread create a new instance of storedScores and therefore the scores are stored in a multitude of data structures?
I think the answer is yes and if so then this is not the solution...The answer is yes. However, threads can share data, if they were properly synchronized. You should read the threading tutorial before creating a lot of hard to debug mistakes.
[http://java.sun.com/docs/books/tutorial/essential/concurrency/]

Issues with acquiring from multiple GigE cameras

Hi,
I'm trying to build a simple app where three cameras are running simultaneously and can optionally record AVIs with timestamped data appended to each frame. I'm not having the recognition issue (all three cameras are seen through either a network bridge on the PXI system I'm using or an external GigE switch), but they seem to be failing during the grab process. When I have more than one running, green noise in the form of horizontal lines appear on the images, and usually all but one of the cameras will eventually drop out. No such problem exists when triggering only one camera. It seems a lot like the frames are colliding somehow; can grabs from multiple cameras not occur in the same loop?
As for the program set up, it's mainly a modified version of the "write" case in the AVI Read/Write with Data example. The user is prompted to save the avi's and a text file, three camera and IMAQ sessions are opened (with unique names), and then the program loops until the stop is hit, with a true/false case for actually recording the data. Frame/sample rate is controlled by the millisecond timer wait function. The problem happens regardless of acquisition speed (even at 1 frame/sec), and the CPU nor the network link seem to be anywhere near fully taxed.
Thanks,
Brian

Thanks for the suggestions guys. I put the packet size back to 8000 on both cameras. So far, I'm still seeing green horizontal lines. Here's what I've tried and what I've learned.
1. Set Acquisition Mode in VBAI to Continuous - Immediate
2. Tried to reduce the bandwidth demand of the cameras by setting Acquisition Frame Rate (Abs) to 3.0
3. Checked the Device Max Throughput under Transport Layer in MAX
a. Color Pilot camera is 30.4 MB/sec
b. Mono Pilot camera is 11.1 MB/sec
4. Checked the Bandwidth Assigned under Transport Layer in MAX, and it is 125 MB/sec
5. Add 30.4 to 11.1 and get 41.5 MB/sec so there is 83.5 MB/sec bandwidth available.
6. Subtract 5 MB/sec for overhead and 6 MB/sec for each camera for Bandwidth Reserve (set at 5%) and there is still 66.5 MB/sec left over
7. Open VBAI, and then open an inspection in which the Mono camera is configured (mad sure to load the defaults that were saved in MAX)
8. Launch MAX and try a Grab from the Color camera
9. See green lines of death....
So, I've narrowed my experimentation down to just two cameras and I still have acquisition problems. I've got to be missing something else. Note that there is no camera attribute section called "Advanced Ethernet" only "Transport Layer". Perhaps that was camera-specific.
I think I'm going to have to use dedicated Ethernet ports for each camera. It is disappointing since this architecture should work given those bandwidth concessions made for frame rate.
- Dan

Acrobat 7.0 Pro on Vista freezes when PDF from Multiple

I try to create a PDF from multiple files and Acrobat just sits there looking stupid. I've checked for updates - Fully updated. It's from my CS2 Premium Professional edition. I have it installed on a Dell e1705 with Vista Home. Dual Processor, but still a 32 bit system. 2GB of ram and a 256 memory card.
I look at the Task manager and the program is using about 22mb of memory. After I select the create PDF form multiple files the program stops like it is about to do something. Vista doesn't register the program as not responding so it's doing something. The CPU usage is at about 50% and stays that way for at least 15 minutes. I just got tired of waiting and closed it in the task manager.
How do I fix this?

It is interesting that you say it is an Adobe bug (or at least that is the implication I got). Part of the problem with VISTA has been that there are a lot of programs that do not work. That is also why many businesses and individuals are still using XP and refused to upgrade. VISTA has a service pack out, but I hear it still has lots of problem. MS has fixed VISTA where there own software was concerned, such as putting the help system back in that they had removed. I am not trying to say that VISTA is not the way to go, but that the blame for things not working should not be put on other software developers.
The $1500 must be for CS, since an upgrade to AA8 from AA7 is only $159. In today's market, AA7 is actually an old man with AA8 being out for quite a while. Six months ago you could still get XP Pro for about $190. I understand it is now almost $800, but I really don't track the prices. I am getting a new machine with VISTA on it in a week or two and plan to look at it a bit (called give it a chance). However, I fully expect to remove VISTA and install XP Pro. To me, that cost is a lot better than upgrading all of my software because of the changes in Windows.
So which system has the bug, Adobe or VISTA. I think you will find a lot of folks who say it is VISTA (that is not to say that Adobe doesn't have some issues also). Hope you get your system working satisfactorily.

Cover flow albums show songs from multiple albums

I love my iPod classic. the only issue I'm having is that when reviewing some albums via the coverflow feature, about 5 albums shows songs from multiple albums. they play correctly. It appears just the listing is messed up. I've tried deleting, adding the albums back to the library and resyncing, but it's still happening. Anybody seen this?

Try *One cover, too many tracks* below:
*HowTo: Grouping Tracks Into Albums*
Excuse the long post, but hopefully covering all the bases (that I can think of) will help you fix the other issues you are likely to run into as you try to organise your iTunes library.
*Use an album friendly view*
iTunes will let you sort music on many columns, some of which are unlikely to group albums together or put the tracks in their normal order. The most useful order for editing the library is probably *Album by Artist*. If you're not already there, select the list view and click on the column heading for Artist until it reads Album by Artist.
*One cover, too many tracks*
The iPod (and iTunes to a lesser extent) conflates two or more albums with the same title, most obviously with *Greatest Hits*. On the iPod this can result in one album acting as a combination of two or more. Selecting any cover gives all the tracks of all albums with the same title. The workaround for this "Greatest Hits" bug is to give each album a unique title - I tend to go for *Album - Album Artist* as this reads clearly in the iTunes browser. Alternatively you could use the wording as it appears on the cover or append different numbers of spaces for each different album. Somewhat oddly, setting different values for Sort Album doesn't work.
*Missing Artist or Album not with others by same artist*
iTunes relies on the Gracenote CDDB database when identifying CD's. This often marks collections or anthologies of an artist's work as a compilation. In iTunes, however, the compilation flag has the logical function of grouping together tracks with the same album name, but different artists on each track, e.g. "Now That's What I Call Metal 666!". These compilations are then all grouped together at the end of cover flow. Most of us however, would expect "Greatest Hits" albums to be listed with the other albums by the same album artist. For albums which are essentially by a single album artist or group it is best to set the appropriate value for the album artist and clear the compilation flag.
*One album, too many covers*
For true compilations, where each track is by a different artist, the answer is to set the compilation flag to true and enable the iTunes preference to *Group compilations when browsing*. If the album is not a compilation however, any tracks which list guest artists may be treated as separate items. Filling in the Album Artist field is enough to link things in iTunes. Sadly, however, the iPod ignores the Album Artist field when grouping albums so this is only a partial solution. You can simply mark the entire album as a compilation which seems to be the way iTMS handles it, however that's not an ideal fix. Short of waiting for Apple to address this issue (and as far as I can tell it goes back to the 1st gen. of iPods) we need a workaround. What I do is to put any additional artist info. in square brackets after the song name. E.g. *Track \[Feat. Guest\]* and then set *Artist=Album Artist* for each track. For anthologies where the Album Artist is credited as part of another group, e.g. for Cream tracks on an Eric Clapton anthology, I use *Track \[As Group\]*. For a track where the main Album Artist doesn't receive a credit, e.g. the first track of the Slim Shady LP credited to Jeff Bass, I just set the track name to *Track \[Guest\]* while still setting the artist to the album artist. N.b. I use square brackets to indicate that this is information about the track as distinct from the song title and also use this style for Mix/Live/Bonus info.
*One album, still too many covers*
iTunes may split albums into two or more sections if some tracks from the album have different values for Artist, Album Artist, Album, No. of Discs or Part of a Compilation. Tiny differences such as trailing spaces, accented characters or variants of symbols can sometimes be quite hard to spot. The iPod is also more sensitive to case variations and may split or reorder an album that looks okay in iTunes. Normally overtyping the desired value for each shared field will complete the grouping of the album into one entity. Occasionally, however, this method seems to fail. When this happens I've found that you can force every field to update properly by adding some extra text - e.g. a trailing X, which once applied seems to complete the joining of the tracks into one album. Once this has happened the extra data can be removed and the album should remain properly grouped.
*Tried that, there are STILL too many covers!*
The Sort Artist, Sort Album & Sort Album Artist fields can be used to override the normal sort order. For example iTunes automatically drops leading articles (a/an/the) so "The Beatles" are arranged under "B" instead of "T". Occasionally different tracks from the same album can have different values in these sort fields which can also break up the grouping. Making the sort columns visible in iTunes can help with spotting & correcting such problems.
*One cover for multi-disc album*
Multi-disc albums are often listed as *Album (CD1)* for CD 1, *Album (CD2)* for CD 2 etc. To display these properly using just one cover, each disc should have the correct *Disc X of Y* values set, and then the entire album should be given the single title Album. Being somewhat obsessive I also renumber the tracks sequentially, working backwards from the last track (so that no two tracks ever have the same number) until I reach disc 1. BTW You can still give the individual discs different artwork should it be relevant so that the correct artwork will be displayed as the album progresses.
*One artist, many names*
With some artists, particularly classical composers, you should be aware of alternative representations of their names. E.g. 2Pac vs. Tupac. The menus will work best if for each artist you standardise on just one form of their name. E.g. make a choice between Mozart, W.A. Mozart or Wolfgang Amadeus Mozart, and then apply it consistently. For classical music I tend also to use the Composer as the Artist & Album Artist and either discard the performer details or place these into the Comments field.
tt2

UCCX Calls Waiting in Queue Customer Request

Hi. Currently we have a customer with a no so common request. Their supervisors would like to have the ability to see Caller ID for the people waiting in queue. They currently only see the longest call in queue (time) and how many calls in queue (total calls). Also they would like the option to pick any call they want from all calls waiting on queue. At least for the Supervisors.
Supervisors are saying that they work on a previous CallCenter environment and they were able to accomplished those 2 request. See Caller ID of the people waiting on queue and also the ability for the supervisor to choose any call they want to from the ones waiting on queue. I don't know if that was a feature out of the box for that particular Call Center environment (Don't know the vendor CC) or if it was a custom job.
Any ideas? Is it possible on UCCX?
-Jose

Hi,
can you please tell me the license level of your UCCX? Premium, Enhanced, Standard or IP IVR?
G.

Waiting for "Dequeue" from "dequeueOperationService". Asynchronous callback

I have created BPEL process which will take input from BPEL console client, put this message into queue using enqueue operation of AQ adaptor.Then i have recieve activity in the same BPEL process to dequeue message from the same queue.
Process is deployed successfully. When I initiate BPEL process through BPEL console client, the message is enqueued properly into queue but when control come to recieve activity of my process i am getting error like this "Waiting for "Dequeue" from "dequeueOperationService". Asynchronous callback" .
Can you please tell me what is the problem? How can resolve this issue to work my BPEL process fine.
Thank you. It would be great help.

Hello,
I have got the same problem. I tried set-up CorrelatonSet, but I could not find solution ... Receive activity is still waiting for dequeue from AQ (and what's more - message is removed from queue by AQ adapter immediately after BPEL process is deployed. Receive acitivity hasn't information about this dequeue - it's still waiting).
Could you pls. write more information???
Many thanks,
martin

Waiting for read from 'fileAdapter'. Asynchronous callback.

I am trying to implement a mid process receive activity for receiving from a file adapter.
I have used correlation set for the first receive activity which receives input from a web client and second receive activity receives from adapter.
the problem is that in the Flow Trace when the second receive activity keeps showing pending and waiting for read from 'fileAdapter'. Aynchronous callback.
Any help would be appreciated

Hello,
I have got the same problem. I tried set-up CorrelatonSet, but I could not find solution ... Receive activity is still waiting for dequeue from AQ (and what's more - message is removed from queue by AQ adapter immediately after BPEL process is deployed. Receive acitivity hasn't information about this dequeue - it's still waiting).
Could you pls. write more information???
Many thanks,
martin

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