What is order of execution in Sequence container

hi all,
I want to know the order of execution in sequence container. we have sequence container and loading 20 dimension table but no precedence constraints between the task, each tasks are separate.
What is the flow of execution, is sequence container allow parallel execution of task ?
Please guide me.
Thanks in advance.

Hello,
All tasks which exist inside your Sequence container will execute in parallel.
If you want to control the order in which they execute then you need to use precedence constraints.
-Vaibhav Chaudhari

Similar Messages

What is the exact use of Sequence container

Hi all,
I am intermediate in SSIS package,i am not understanding what is the exact use of Sequence container ?
I am preparing for interview(3 years exp), if experts dont mind can you pls share some tips and questions to clear the interview ?
pls
thanks

Hi SelvakumarSubramaniam,
This blog delivers a good summary of the benefits we can get by using Sequence Container:
Easier debugging by allowing you to disable groups of tasks to focus package debugging on one subset of the package control flow.
Managing multiple tasks in one location by setting properties on a Sequence Container instead of setting properties on the individual tasks.
Provides scope for variables that a group of related tasks and containers use.
Create a transaction around all the components inside the container.
Here are some other good resources:
http://www.phpring.com/sequence-container-in-ssis/
http://sql-developers.blogspot.com/2010/06/sequence-container-in-ssis.html
Regards,
Mike Yin
TechNet Community Support

How to enforce order of execution of parallel tasks?

How do I set the order of execution of parallel tasks in a container?
The execution isn't truly random. It appears to be set to a random constant at package creation.
Demo
I set up a dummy package.
Max concurrent executions = 1
sequence container with four script tasks that do a thread.sleep
The tasks always execute in the order 4, 2, 1, 3. Closing/opening the solution makes no difference to the order of parallel execution.
Is there a way i can change the execution order? Do I need to change the guid/id of the object (tried this but it invalidates the xml) or is there an order somewhere else in the XML?
I've found a hack/workaround but it's a bit ugly so I'm wondering if there's a way to do it without adding dummy tasks.
Basically if i create a dummy start task and then drag off "on success" constraints to each of the four threads, the threads will execute in parallel in the order in which i created the constraints
Why do i want to do this? I have a number of parallel tasks in a sequence container where three will take a long time and the rest won't take as long.
I'll minimise the time required for the execution of container by using parallel tasks AND controlling the queue order (longest first). It won't matter whether I have 1 logical cpu or as many logical cpus as i have tasks.
Thanks
Jakub @ Adelaide, Australia

I think the problem you are trying to say is
a) You have multiple tasks( i assume 10) now out of these 3 execute slowly.
b) You done have any constraints for task execution, so what you want to achieve is that the 7 task should continue without waiting for the other 3 in your case the 3 are starting up earlier and other 7 are not able to start as a result.
AS arthur pointed out these are 2 diff things constraints and parallel execution, and there would always be some task which would be started at some point of time.
But if you know in advance some tasks are going to take time, i would suggest keep 2 diff sequence containers in 1 keep the 7 tasks which runs fast in another one keep the other 3 which tend to run slow
Abhinav http://bishtabhinav.wordpress.com/

Order of execution at start of dasylab wks (var/str)

what is order of execution in Dasylab when you start a wks for:
"read from .ini" , "enter at start of experiment" , action "at start of experiment".
especially concerning values of vars/strings.
Are any modules, including actions 'at start of experiment ', processed before str/var 'entered at start of experiment' have an answer ('start' or 'cancel').

The sequence of evaluation is as follows:
1) Read variables/strings from .ini (when selected in define Global Variables)
2) Enter variables/strings at startup (when selected in Define Global Variables)
3) Start of all modules (except Actions)
4) Start actions of the Action modules (including all variable/string actions)
- cj
Measurement Computing (MCC) has free technical support. Visit www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.

What is the order of execution of global transfer routine where multiple routines are involved?

Hi,
Suppose we have start routine, transformation routines and end routine defined between datasource and data target, and also we have a global transfer routine created on an infoobject.
What is the order of execution of routines in this scenerio?
Also if conversion routine like ALPHA is defined for an Infoobject, when does this come into flow.?
Please enlighten me.
Thanks,
Akshara

Hello Akshara ,
The sequence of routines are as
1. Start Routine
2. Master Data Look Up or
3. Field Level Routine
4. End Rountine
Apart from this , there is Expert routine, which is used in special cases, when there are not the sufficient functions to perform a transformation. It can be used as a interim solution , and it performs all the functions of Start routine, end routine , field routine.
Note : if you have created transformation, and then created Expert routine, then system will delete all the existing transformations.
Further to this, you can explore more, by debug the transformation as suggested by Vijay Kumar.
Hope this helps !
Regards
YN

Statechart Module: What is the order of execution for a parent state and its substates?

Hello,
This page describes the order of execution of transitions and actions for one level of nesting. What about compound states? Do the static reactions of the parent state execute before the transitions of the sub-states?

Hello,
I'm not incredibly familiar with the Statechart module, but I will look into it for you on our internal database. In the mean time, there are some examples that may answer some of your questions here:
https://decibel.ni.com/content/docs/DOC-8716
and here:
http://www.ni.com/white-paper/7425/en
-N
National Instruments
Applications Engineer

In What Order Does OC4J starts Modules contained in Application?

Hi all,
I would like to know if it is possible to choose the order in which EJB & Web modules are started.
As a matter of fact, I need some Web modules to be started prior to some other Ejb modules. All are deployed in a single application.
I though the startup order would be the same as the deployment order, driven by 'application.xml', but after testing, it does not seem to be the case
I am using oc4j version 10.1.3.2
thanks for your help
henri

Eric,
Thanks for that. Your replies, some trial and error and reading the Ligthroom SDK Manual means I'm starting to understand it.
I think some of my confusion comes from the layout of the modules in the "Export Screen"
All the Ligthtroom ones are ABOVE all the LR2 Mogrify ones
which of course suggests that the Lightroom bits get executed before the Mogrify ones.
For Export actions that's not too bad, but for Post-process actions it would be nice if the mogrify ones were ABOVE the Lightroom ones.
Ideally interelave the modules into the correct order!
I realise from a S/W development perspective this might be impossible.
An alternative might be to re-inforce the "order of execution" in both the Users Guide and the SDK manual, and perhpas a one-line note on the Export page itself.
Once again thanks for the helpful repsonse.
Best wishes
Terry

The order of execution (of PL/SQL function calls) changes...why??

select e.EMPID empid,
e.name name,
aatest.SETVALUES(2) z,
aatest.TEST1() b,
aatest.TEST2() x,
aatest.TEST3() y
from emp e
where e.empid = 101
order by e.name;
when I execute this select statement...the order of function calls is as follows:
setvalues 1st (call no:1)
test1 (call no:2)
test2 (call no:3)
test3 (call no:4)
Now...I introduce a join between the two tacles as mentioned in the query
select e.EMPID empid,
e.name name,
e2.deptno deptid,
aatest.SETVALUES(2) z,
aatest.TEST1() b,
aatest.TEST2() x,
aatest.TEST3() y
from emp e, emp2 e2
where e.empid = e2.empid
order by e.name;
The order of execution of function calls changes to
(I observed this using DBMS_OUTPUT.PUT_LINE)
test3 (call no:1)
setvalues 1st (call no:2)
test1 (call no:3)
test2 (call no:4) (the first and last calls swap!)
i.e: it calls the last function in the select statement at the beginning
instead of calling it at the last. Is it the normal behaviour? or whats going on
here?
Can somebody explain me, please....
Details:
the following four functions are defined in a package called 'aatest' and compiled.
aatest.SETVALUES(2)
aatest.TEST1()
aatest.TEST2()
aatest.TEST3()
the Tables EMP and EMP2 are two tables defined in the same schema.

Your "thinking" is wrong here. You can not use the column order to model your program flow. As SQL is set/tupel based, there is no given sequence of the execution order. Otoh you want to have a specific order in wich your functions must be executed otherwise the result will be wrong (or undefined). Thus here you need a procedural approach. This can be done by using PL/SQL for example.
You would code your functions in that way, that they are working correctly independent from the place where they are called ie if function1 needs the setvalues function, this function must be called inside the function1 then.
Are you sure you need all these functions in this procedural approach inside the sql-statement? This is mostly not needed and can be accomplished by using pure SQL. If not, may be your design is broken.

Order of execution of Callable objects in an ExecutorService

what determines the order of execution of Callable objects in an ExecutorService ?
here is my test code:
    ExecutorService exe = Executors.newCachedThreadPool();
    Set<Callable<String>> tasks = new HashSet<Callable<String>>();
    for (int i = 0; i < 10; i++) {
      Worker worker = new Worker(i);
      tasks.add(worker);
    List<Future<String>> results = exe.invokeAll(tasks);
    for(int i = 0; i < results.size(); i++) {
      Future f = (Future) results.get(i);
      String s = (String) f.get();
      System.out.println("__" + s);
public class Worker implements Callable<String> {
private int seqNumb = -111;
public Worker(int i) {
    this.seqNumb = i;
public String call() {
    double d = Math.random();
    int i = (int) (d * 10000);
    Thread.sleep(i);
    return (Integer.toString(i) + "___" + seqNumb);
}i ran this code within NetBeans on one XP machine. and ran it from the command line on a different XP machine.
the sequence is always:
*6*
*9*
*4*
*3*
*8*
*1*
*0*
*5*
*2*
*7*
the sequence should be random because of the random wait???
the sequence looks random. why does "6" come before "9"? why is "7" last?
yet, the sequence is always the same.
i can't understand the order of execution of the Callable objects.
note:
what i'm trying to do is implement my own version of the ExecutorService interface.
so, its important to understand the above question?
Edited by: kogose on Feb 9, 2009 6:53 PM

jtahlborn wrote:
ejp wrote:
2. The order of execution is defined by the queue associated with the ExecutorService. Normally it is a FIFO, but one can imagine using a PriorityQueue, given some kind of priority implementation in the submitted tasks.just to be clear for others who may be reading this, the order of submission is controlled by the queue implementation (where submission is the movement of a Callable from a queue to a thread). once the Callables are passed to threads, their actual order of execution is undefined (where execution is the invocation of the "call" method).And not only that, but even if we knew that the order of execution were call1, call2, call3, that still doesn't tell us anything, since there's no synchronization here, and hence any thread can be swapped out at any time. Call1 could be entered, but then swapped out before it gets to print anything, etc.
Bottom line: When you're dealing with multiple threads, unless you use synchronization, wait, notify(All), or higher level java.util.concurrent constructs, you have no ability to control or predict what executes when.

What is Order Output? What is Transfer price?

I have 2 questions:
1. What is order output?and how can we stop order output for a customer, plz explain in detail.
2.What is Transfer price? my client wants to transfer material from thier plant to 3 diff. warehouse and they want to Put Transfer price on that, my question if we have to create new pricing condition for transfer price, what changes needs to be done in condition type or what needs to added, i am really confused,appreciate ur help guyz.
Thanks
Mohammed.

> 1. What is order output?and how can we stop order
> output for a customer, plz explain in detail.
have a to the access sequence of the message and make one entry for the customer so that you have not immediate print (4) but manual print (3)
> 2.What is Transfer price? my client wants to transfer
> material from thier plant to 3 diff. warehouse and
> they want to Put Transfer price on that, my question
> if we have to create new pricing condition for
> transfer price, what changes needs to be done in
> condition type or what needs to added, i am really
> confused,appreciate ur help guyz.
transfer price is usually condition type PI01/PI02 and represents the price for internal transefers in intercompany process.
have a look to:
http://sap-img.com/sap-sd/configure-intercompany-stock-transport-order.htm
reagrds
Roberto
pls. reward points

Device error "sequence contains no matching element"

Hallo,
I just received the VirtualBench and I could use it as I connect it for the first time. I then downloaded and run the program for Window7, so that I would be able to run the program from my PC.
Since then, I cannot work anymore more with the virtualbench. It always give the same error: device error: sequence contains no matching element.....
What it wronf what shall I do?
Note: I read a similar question, but it seemed that the error disppeared somehow for unexplained reason. So, there were actually no solution mentionned for this problem.
Thanks in advance for any support.
Solved!
Go to Solution.

For anybody that has this problem in the future, we'd really like to get to the root of the problem. To help with that I have created a small utility that will pull the configurations from your device and save them to files. These configurations appear to be corrupted in these situations.
The easiest way to use the utility is to run it from the command line. It will find the first USB VirtualBench on your system and save any configuration files it has to your temporary directory. For example:
C:\Users\User\Desktop>nivb_cfgutil.exe
Saving files to C:\Users\User\AppData\Local\Temp\
Connecting to device 'vbzach'
Found config: ni-virtualbench-preferences.vbconfig
Wrote config to file C:\Users\User\AppData\Local\Temp\ni-virtualbench-preference
s.vbconfig
Found config: test_cfg.vbconfig
Wrote config to file C:\Users\User\AppData\Local\Temp\test_cfg.vbconfig
Found config: test_cfg2.vbconfig
Wrote config to file C:\Users\User\AppData\Local\Temp\test_cfg2.vbconfig
It also has some options that allow you to specify the device to connect to (either by name, IP address, or hostname), where to put the files, and whether or not to overwrite existing files on your PC. For example:
C:\Users\User\Desktop>nivb_cfgutil.exe --help
Usage: nivb_cfgutil.exe [options]
Main options:
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      Shows help.
-d, --dev=device
      Device name to target.
-o, --out=directory
      Output directory to save config files. If not specified, the temporary di
rectory is used.
-w, --overwrite
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What we would like is that when people run into this issue they perform the following steps:
Attach the application preferences files:
Open a file explorer
In the address bar, enter this path (copy/paste can help):
XP: %USERPROFILE%\Local Settings\Application Data\National Instruments\NI-VirtualBench
Vista, 7, 8: %USERPROFILE%\AppData\Local\National Instruments\NI-VirtualBench
Attach the file ni-virtualbench-preferences.vbconfig to a post here so we can inspect it.
Run the nivb_cfgutil.exe utility attached to this post, and post any *.vbconfig files it creates to a post here so that we can inspect it.
Once you have done that, you should be able to fix the issue by doing the following:
Use the reset button on the back. The application also uses information stored on the PC when it starts. If the problem is there, then resetting the device alone won't help.
NI VirtualBench Help :: Reset Button http://zone.ni.com/reference/en-XX/help/371526A-01/vbhelp/wirelessbutton/
Launch the app. If it works, you're done.
If the issue was not resolved, you may also need to delete the file mentioned above.
Open a file explorer
In the address bar, enter this path (copy/paste can help):
XP: %USERPROFILE%\Local Settings\Application Data\National Instruments\NI-VirtualBench
Vista, 7, 8: %USERPROFILE%\AppData\Local\National Instruments\NI-VirtualBench
Delete the file ni-virtualbench-preferences.vbconfig
Zach Hindes
NI R&D
Attachments:
nivb_cfgutil.zip ‏991 KB

WHERE clause order ox execution question

I dont understand order of execution of a WHERE clause, using a complex database
I want to write a SELECT statement with the following condition
... WHERE ( branch = 'main' ) AND ( type = 1 ) OR ( charge -1 AND charge = 2 )
My question is
<1> Can yoyu use parenthesis inside of a WHERE clause
<2> How would you write such a clause as above if you can not use parenthesis
Thanks

Just to echo what everyone else is saying, of course parentheses are syntactically valid and can make a difference to the logic. In you example though,
WHERE ( branch = 'main' ) AND ( type = 1 ) OR ( charge {noformat}<{noformat}> -1 AND charge <= 2 )is the same thing as
WHERE ( branch = 'main' AND type = 1 ) OR ( charge {noformat}<{noformat}> -1 AND charge <= 2 )and even
WHERE branch = 'main' AND type = 1 OR charge {noformat}<{noformat}> -1 AND charge <= 2because AND takes precedence over OR. You can think of it as a "stronger" operator.
However I would not use the last version because it's ambiguous to anyone reading it, and code like that can easily hide bugs. I would also not use the first version because all those redundant brackets are just confusing, making it almost as hard to read (and therefore prone to bugs) as the last version.
btw I've changed your example because I know this forum can swallow *{noformat}<{noformat}>* (I've used {noformat} tags to preserve it).
I'm not sure if any of this affects order of execution (and if it does, your Oracle version will make a difference).

Customer exit variables: order of execution

Hi,
I am using multiple customer exit variables. What determines the order the coding in ZXRSRU01 for these variables is executed ?
When I debug, the program always starts with the coding for one particular variable first, but can I depend on it that it stays this way ?
Regards,
Guido

Hi Wodn,
Suppose I have 2 variables, both are called in I_STEP = 2. You write:
'the order of execution is based on the order of the variable which is being called'
Can you elaborate ? What exactely determines this ? Is it the order of the variables being used in the query (KF1 first, the KF2) ? I cannot find logic here.
Thanks for your reply.
Guido

Order of execution of named method user properties and server script

Dear All,
If for a Custom method on an applet, we have scripts in WebApplet_preinvokemethod and WebApplet_invokemethod and also for the same Custom method we have applet Named Method user properties and BC Named Method user properties, what will be the order of execution of these scripts and Named Method user properties??

The Private Event Submission sample portlet shows how to achieve this. It is part of the PDK download.
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Order of execution of used DCs(doModifyView) in a Main DC

Hello all,
I am working in an application using webdynprojava.
The Application has a main DC and this main DC uses four seperate DCs as used DCs.
We have code written in doModifyView in all the respective DCs(views). And all those are executing in specific order.
My question is,
what decides the order of execution of used DCs(doModifyView).
If any one has any knowledge on the above querry please provide your suggestions
Thanks
Uvendu Bala

Hi Uvendu,
From what you mentioned, you are using 4 DCs as Used DCs in a the main DC.
Say you have view1 in used DC1,view2 in used DC2,view3 in used DC3 and view4 in used DC4.
If during the application execution view4 appears before others then the wdDoModifyView of view4 is called first.
The wdDoModifyView is called just before the view is displayed in the browser. Hence, the order of execution of the wdDoModifyView will depend on the order the views are being displayed to the end user.
If say, you just calling a method in the component controller in DC1 means that the wdDoModifyView of view1 will not be called.
Regards,
Kartikaye
P.S :- Please grant points for correct or helpful posts.

What is order of execution in Sequence container

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