Handling exceptions in a For loop

Similar Questions

• PLSQL cursor for loop - no_data_found exception

  Hi all

  Please, could you help me. I start to learn PL/SQL, so please be pattient.

  the very simple block. Base table emp (for Oracle), he sucks with more then 5000 large salary. I thought that the result would be "aaa", but result is actually empty.

  declare
    cursor c1 (v_num number) is
      select ename,sal
      from emp
      where sal > v_num;
  begin
    for rec in c1(5000) LOOP
      begin
      dbms_output.put_line('Employee: ' || rec.ename || ' has a salary of ' || rec.sal);
    exception
    WHEN NO_DATA_FOUND THEN
      dbms_output.put_line('aaa ');
    end;
    END LOOP ;
  end;
  /
  
  

  How can I solve this problem?

  Thank you much for the help.

  With the help of a cursor for loop will never throw an exception no_data_found.

  Despite everything, you try to catch all exceptions thrown by dbms_output.

• for loop in a procedure stored

  I have Windows XP with 10g 10.2.0.1.0
  I got errors that I executed the following codes. Can I use select in exception inside the loop, if not, I have another other way to solve the problem? Help, please.
  
  LINE/COL ERROR
  -------- -----------------------------------------------------------------
  249/3 PLS-00103: encountered the symbol "EXCEPTION" when expected
  of the following:
  begin case declare end exit for goto if loop mod null pragma
  raise return select update while < ID >
  < between double quote delimited identifiers of > < a variable binding > < <
  Close current delete fetch locking insert open rollback
  SAVEPOINT SQLExecute set pipe fusion commit forall
  
  247/17 PLS-00403: expression "V_COUNT" cannot be used as a target-INTO
  a SELECT/FETCH statement
  
  
  
  v_count NUMBER (1): = 0;
  for v_count in 1.cols.count)
  loop
  SELECT 1 IN v_count FROM USER_TAB_COLUMNS WHERE table_name = nom_table_p
  AND column_name = cols (v_count);
  EXCEPTION
  WHEN NO_DATA_FOUND THEN
  raise_application_error (-20001, passes (v_count) |) 'does not exist');
  while others then
  raise_application_error (-20011, sqlerrm);
  end loop;

  Hello

  Of course, you can have an EXPECTION article inside a loop. Ensure that correspondents starements BEGIN and END are inside the loop, too, like this:

  ...     v_count NUMBER(1) := 0;
  BEGIN
       FOR  v_count IN 1..cols.count()
       LOOP
            BEGIN
                 SELECT  1
                 INTO      v_count
                 FROM      USER_TAB_COLUMNS
                 WHERE      table_name      = p_table_name
                 AND     column_name       = cols (v_count);
  
                 ...
            EXCEPTION
                 WHEN NO_DATA_FOUND THEN
                         RAISE_APPLICATION_ERROR ( -20001
                                     , cols (v_count) || ' does not exist'
                                     );
                 WHEN OTHERS THEN
                         RAISE_APPLICATION_ERROR ( -20011
                                     , SQLERRM
                                     );
            END;
       end loop;
  END;
  

  This is one of the many situations in which withdrawal correctly your code can avoid mistakes.
  Notice how it is easy, given the statements BEGIN, EXCEPTION, END or LOOP, to see where the corresponding END, EXCEPTION, BEGIN or LOOP statement is and what the scope of this block.

  Do you really need (or even want) to trigger the error-20011? Why not raise the original instead error? Why do something with these errors: why not let the default Oracle error handling to catch them?

  On the other hand, tyou have two separate variables, called v_count.
  That reported on the first line above (before the BEGIN statement) is not used anywhere.
  It is set in the HEART... Declaration of the LOOP and is used inside this loop, including the EXCEPTION section withion that loop.

  Do you really need to do a select... INTO in the loop? If possible, it would be less evil and more effective, for the results of the SELECTION... AT the same time, you get the other data.

  Published by: Frank Kulash, August 10, 2010 13:35
  Deleting duplicate EXCEPTION statement.

• slider with a for loop

  Hi all
  
  I have a simple slider in my pl/sql procedure. I use the method for the slider of the loop and retrieve the values below.
  
  
  DECLARE
  
  VAR_A VARCHAR2 (100);
  
  CURSOR C1 IS
  SELECT DEPT_NAME, DEPT_NO OF THE DEPARTMENT;
  BEGIN
  
  FOR I IN C1
  LOOP
  VAR_A: = I.DEPT_NAME;
  END LOOP;
  
  -etc etc.
  -etc etc.
  
  EXCEPTION
  WHILE OTHERS THEN
  DBMS_OUTPUT. Put_line ('hello');
  
  END
  
  This workfine but if the DEPT table does not all records in it, it goes directly to the management of exceptions, and if there are all the other instructions after the FOR LOOP, they will not be executed. I know there is a method to use the cursor (instruction FETCH) more, but I want to know what is wrong by using the FOR LOOP.
  
  The strange thing about this example is, even if I catch the exception, the program stops and if the DEPT table has no recording errors.
  
  Any suggestions or tips are greatly appreciated.

  the program stops and if the DEPT table has no recording errors.

  This seems a little suspicious. Probably another error product which is now hidden simply because of your manager WHEN of OTHER of exceptions, that didn't come out the real error message.

  I recommend getting rid of the exception handler together and after the release of the thrown exception.

• Have different conditions for loop start and stop

  I do a VI when a circle is moving on an image control and its movement is decided by programming, but also by the user. I have programmed the speed of the circle as a vector which turns (using a rotation matrix) when a certain condition is met. This condition is dependent on the position of the circle and direction as well as other entries. The tricky thing is I want to that when the rotation condition is met (true), the rotation continues until the angle of the vector is equal to the original angle (when the condition became real) + / variable x.

  So my question is how do I program a piece of code that once activated, will run until a stop (depending on the State of vector early in the race) condition is reached. As it should be when the VI is on, I can not put a while loop inside an another while loop. Online help mentions also conditional for loops, but it isn't available in my version of LV (8.2)

  The correct solution is a state machine with a case inside a single while loop structure. Based on the need to use one of the several cases and move on to another matter as necessary using a state variable (for example, an enum) in a registry change. One of the cases should be slowed down and not do much except maybe controls survey.

  There are a lot of models.

  Do not hesitate to contact a simplified example of your code and help you.

• When to use the cursor for loop and the cursor (open, fetch, close)

  Hello world
  I have a small doubt about when to use the cursor for loop and when to use the cursor for loop and the cursor (open, fetch, close).
  Well, I'm not the difference between implicit and explicit cursor. So please tell me how I got to know, what to use and when?
  
  
  
  
  Kind regards
  BS2012
  
  Published by: BS2012 on January 29, 2013 12:15

  All SQLs are analyzed, stored and executed as cursors. Thus, you will always use a cursor.

  The problem is that languages, such as PL/SQL, provide different interfaces to interact with the SQL cursor. As the ref, the slider interface, the interface DBMS_SQL slider interface and so on.

  Each of these interfaces offers different features. For example, using the interface DBMS_SQL allows binding dynamics and dynamic recovery. The Ref Cursor interface allows your code PL/SQL pass a handle to a reference pointing to the SQL cursor, to an external client. Etc.

  The fundamental reason for the use of an explicit cursor interface is mainly that you own and manage bulk made extraction output provided by PL/SQL cursor.

  With a cursor FOR , the motor loop of PL/SQL optimize the loop by extracting block a 100 lines both. However, you cannot access this collection in bulk directly inside the loop.

  With an explicit cursor interface, you specify the size of the extraction in bulk via the clause LIMIT , and you set the variable of collection to use. This allows you to use the collection directly variable inside the loop.

  However, the need to do - code manually in bulk collection - rarely occur in the daily programs in PL/SQL. A line of treatment is both slow and not well fits. And even if your bulk code collects lines, these lines must still be processed one at a time in your code. It is much more efficient and scalable rather write SQL code, and make the engine SQL the line of treatment for you.

• What is the idea of making response and handling exceptions in TF?

  Dear all,
  
  In seeking an answer to my question, I struggle to decipher this line.
  
  Task workflow exception handling handles any exception which is Render Response phase
  
  I found this many times in many post like this.
  Re: ADF exceptions (including the GET RESPONSE PHASE)
  and this
  Re: Exception in TaskFlow management
  
  What is the idea behind the management of exceptions in the workflow associated with the lifecycle JSF/ADF?
  
  I can't find a resource on why I should know what the phase of emergency has been lifted?
  Sorry if my question is maybe wave/ignorant to others, but I just want to know the idea of experts here. :)
  
  Thank you.
  
  11G PS4 JDEV

  Hello

  Render Response is the last phase of the treated during the JSF application lifecycle. The controller of the ADF has no chance to handle exceptions that occur during this period (for example, the exception that is thrown in bean managed) and therefore in its default exception manages the implementation ignores this phase of the life cycle. As an application developer you don't need to know when an exception is thrown. However, if you feel that an exception occurs during the given response, and it is not managed by the ADFc declarative exception handler, so you know. You can try to replace the framework as explained here exception handler:

  https://blogs.Oracle.com/jdevotnharvest/entry/extending_the_adf_controller_exception_handler

  However, the best practice is to use try/catch around the call blocks, for example in a managed bean that could cause exceptions

  Frank

• AS2: Paintings and 'for' loops

  Hello

  I have a simple table of clips ("box1" - "box6") that I created on the stage. I then a simple onRollOver function is iterated for each of these clips, as shown below. Only now is it works well, but I can foresee two problems potential for when I use large Bay and apply this technique to my real job files.

  1. If I have a lot more video clips, the first line of code would be much longer that it lists each movie clip instance name. Is it possible to use, for example, a for loop to include these clips in the table without having to type their names? As you can see here, I used a simple incrementing numerically naming process. I think that the problem may be that I use video clips with the name of bodies assigned on the scene and not created through ActionScript.
  2. The function I created it makes all the gotoAndStop (1) movie clips and one who was knocked down then goes to frame 2. Is there a way to make all the movie clips in the table with the exception of the one who drove over gotoAndStop (1), IE. is it possible to exclude the music carried over from the first part of the function? Here, it works fine as it is, but I think that maybe when I start using the more complex functions with interpolations etc it can cause problems. Or not?

  var boxArray:Array is [box1, box2, box3, Box 4, box5, box6];.
  var: string of area;

  for {(boxArray box)
  
  boxArray [box] .stop ();
  
  boxArray [box] .onRollOver = function() {}
  for {(boxArray box)
  boxArray [box] .gotoAndStop (1);
  }
  this.gotoAndStop (2);
  }
  }

  For the first question, if you know how many boxes are there altogether, you can use a loop for to add in the table...

  for (i = 0; i

  boxArray.push (this ["box" + String (i + 1)]);

  }

  There are ways to do this without knowing how many there are as well.

  For the second question, you can probably use a conditional to compare if 'this' is equal to boxArray [box] or not and whether to exclude it.

  boxArray [box] .onRollOver = function() {}
  for {(boxArray box)

  {If (this! = {boxArray [box])}
  boxArray [box] .gotoAndStop (1);

  } else {}

  this.gotoAndStop (2);

  }
  }
  }

• How to optimize the select query executed in a cursor for loop?

  Hi friends,
  
  I run the code below and clocked at the same time for each line of code using DBMS_PROFILER.

  CREATE OR REPLACE PROCEDURE TEST
  AS
     p_file_id              NUMBER                                   := 151;
     v_shipper_ind          ah_item.shipper_ind%TYPE;
     v_sales_reserve_ind    ah_item.special_sales_reserve_ind%TYPE;
     v_location_indicator   ah_item.exe_location_ind%TYPE;
  
     CURSOR activity_c
     IS
        SELECT *
          FROM ah_activity_internal
         WHERE status_id = 30
           AND file_id = p_file_id;
  BEGIN
     DBMS_PROFILER.start_profiler ('TEST');
  
     FOR rec IN activity_c
     LOOP
        SELECT DISTINCT shipper_ind, special_sales_reserve_ind, exe_location_ind
                   INTO v_shipper_ind, v_sales_reserve_ind, v_location_indicator
                   FROM ah_item --464000 rows in this table
                  WHERE item_id_edw IN (
                           SELECT item_id_edw
                             FROM ah_item_xref --700000 rows in this table
                            WHERE item_code_cust = rec.item_code_cust
                              AND facility_num IN (
                                     SELECT facility_code
                                       FROM ah_chain_div_facility --17 rows in this table
                                      WHERE chain_id = ah_internal_data_pkg.get_chain_id (p_file_id)
                                        AND div_id = (SELECT div_id
                                                        FROM ah_div --8 rows in this table 
                                                       WHERE division = rec.division)));
     END LOOP;
  
     DBMS_PROFILER.stop_profiler;
  EXCEPTION
     WHEN NO_DATA_FOUND
     THEN
        NULL;
     WHEN TOO_MANY_ROWS
     THEN
        NULL;
  END TEST;

  The SELECT inside the LOOP FOR cursor query took 773 seconds.
  I tried to use COLLECT in BULK instead of a cursor for loop, but it did not help.
  When I took the select query separately and executed with a value of the sample, and then he gave the results in a Flash of a second.
  
  All tables have primary key index.
  Any ideas what can be done to make this code more efficient?
  
  Thank you
  Raj.

  DECLARE
    v_chain_id ah_chain_div_facility.chain_id%TYPE := ah_internal_data_pkg.get_chain_id (p_file_id);
  
    CURSOR cur_loop IS
    SELECT * -- better off explicitly specifying columns
    FROM ah_activity_internal aai,
    (SELECT DISTINCT aix.item_code_cust, ad.division, ai.shipper_ind, ai.special_sales_reserve_ind, ai.exe_location_ind
       INTO v_shipper_ind, v_sales_reserve_ind, v_location_indicator
       FROM ah_item ai, ah_item_xref aix, ah_chain_div_facility acdf, ah_div ad
      WHERE ai.item_id_edw = aix.item_id_edw
        AND aix.facility_num = acdf.facility_code
        AND acdf.chain_id = v_chain_id
        AND acdf.div_id = ad.div_id) d
    WHERE aai.status_id = 30
      AND aai.file_id = p_file_id
      AND d.item_code_cust = aai.item_code_cust
      AND d.division = aai.division;         
  
  BEGIN
    FOR rec IN cur_loop LOOP
      ... DO your stuff ...
    END LOOP;
  END;  
  

  Published by: Dave hemming on December 4, 2008 09:17

• create an exception in avast for the nsemail.html file in the temp folder

  I was pulling out my hair trying to find if there could be anything in the temporary files that I have to keep the last few weeks. Then I came across this: "the release of Avast 10.3.2223 (we think it's this version) has resulted in questions with avasts prevention of Thunderbird.
  to function properly. The solution seems to be to create an exception in avast for the nsemail.html file in your
  computers temp folder. "So now I'm completely confused. Why would I put something I need all the time in a temporary file to have remove for cleaning ccleaner?

  Matt, thanks. I read your blog post. I need to replace my HD and I've been fretting over if I have to loose important data from the temporary files. Apparently not. When I talked about ccleaner, it was in the generic sense. I avoided ccleaner because I thought it was a big hammer and some data that he brags about getting rid of I really want to continue. I know that I can choose what remains and what is happening, I'll have to give him another look. Once again thank you.

• parallel processing: for loop taking place

  Hallo,

  I have a loop 'for' runnin on this system: LabVIEW2009, windows7, intel i7.

  I wonder if and how I can tell to LabVIEW that he would be allowed to run different iterations of the loop at the same time (concurrently) on my processor with 8 cores.

  Now, it will execute the next iteration when it ended the previous, even one so is there no dependencies in iterations.

  I want to give a 'ownership' of the loop, which means that it can be "unfolded" for parallel execution.

  Thank you

  Pier

  pop up on for loop and select "configure interation Prallelism."

  Activate it.

  Wire a certain number to the new 'P' of entry to specify how many processors to spread it everywhere.

  Ben

• for loop in formula node does not

  Hello

  I; m trying to use for loop in the node of the formula, but it is does not work. I want the output (y1) product value in certain range (a and d, and of course one is smaller than d). I ' do not use primitive labview since a and d are keep changing (both are variable). I tried to put "return 0;" after the y1 equation but the error popup.

  The issue of the loop works not because it gives the last value (I average would be ""). It does not begin with an (initial) value.

  Please help me how to solve this problem...

  Pls ignore other variables not used in the equation. Thank you!! A lot

  Your code works.

  

  But why you use loop?
  You get the last value, so you can get it in a single step with x correct;

  Also why you say that can not use primitives?
  If you use wire instead of terminals or local variable States values constant.

  Y1, y1_2, y1 3 is the same values calculated differently.

  

• parallel for loops does not

  Hello.

  I'm learning the multi - thread programming. To start, I use "parallel for loops" and I was surprised that it does not work. One - thread loop work a few times faster (depending on settings) that multi - thread. I don't know why, and it is my request to correct my Vi to work properly.

  Lenovo, G580, Windows 7, 64-bit computer

  Intel Core i7 3632QM
  Ivy Bridge
  Specification Intel (r) Core i7-3632QM CPU @ 2.20 GHz
  Package (platform ID) Socket 988 B rPGA (0x4)
  Number of hearts 4
  Number of threads 8

  LabView 2011.

  Altenbach says:
  

  Gibbon wrote:

  What was 'strange' behavior?  In "linia dluga" when inside the loop is on '1' of the "spreed up' between one and multi-fil is about 3 times, when I put it in '20' this grow to 6.2. It was strange form me, becourse I expect a similar value.

  A parallel FOR loop has an overhead for parallelization (split the problem, then go back the results, etc.). If the code is very fast, the overhead is proportionally larger. If the Subvi takes a long time to complete, the overhead of parallelization is insignificant. It is often not worthwhile to parallelize the loops with a very simple and fast code.

  Gibbon wrote:

  Altenbach - I have another question if you can help me - how did you "seconds relative high resolution." VI "? -I want to say how did you know that there is this 'vi '. And thanks a lot for your modyfications.

  You can find it in vi.lib\utilities. It is well known.

  Maybe not well known enough!  the 'Hidden gems' package adds to your palattes.  It has also been considered by a nugget of the community

• For loop runs with the value of N unwired

  In this case will be a loop run connected to the loop N worthless? I have seen a few examples of the loop for run without a certain number of times set to be ran wired or for example a size of table or something like that.

  PauldePaor wrote:

  Here's a program I am and as you can see the image that the program runs without the loop N being wired. The program will run without problem

  As everyone else has said, you don't have to plug something on N.  If you wire up a table for loop for input "auto-index", the loop for will run automatically the smaller table size.

  Perhaps an example will help:

  

  This makes a loop on my table size (in this case, long of 5 elements).  On the edge of the loop for which resembles [] brackets, indicates that it is auto-indexé.  The loop should go through each item one at a time (1, then 2, then 3, then 4, then 5).

• Préallouée VI environment in paralleled for loop

  Hello

  I searched a bit and couldn't find that everything about this specific issue.

  If I have a Subvi in a parallelized for loop and the Subvi is set upon reentrant preallouee clone, the Subvi register also several characteristics of memory depending on the number of loop iteration For? My specific application is a Subvi containingvibration Analytisis screw using the previous data in their spread and filters.

  Thank you!