B2B Exception handling

Hi,
Implementing exception handling part for B2B and the version using is 11g.
I am implementing exception handling by using JMS queue "B2B_IN_QUEUE".
If message is getting error out then B2B producing error message into "B2B_IN_QUEUE".
Checked in server and "B2B_IN_QUEUE" consist the error message.
In BPEL I am consuming the message. But the instance is not getting created for the message available in "B2B_IN_QUEUE".
In Jms Adapter configuration wizard not provided the option for defining consumer type as "B2BErroruser". Due to consumer type is undefined thinking bpel is not intiating itself by consuming the error message available in "B2B_IN_QUEUE".
I tried by providing message property "MSG_TYPE" value as '3' also.
But still Bpel instance is not creating...
Please tell me is required to set any other message properties to make bpel to consume the message.
Thanks&Regards,
Sridhar.Rachumallu
Edited by: sridhar.rachumallu on Nov 30, 2010 10:31 AM
Edited by: sridhar.rachumallu on Nov 30, 2010 10:40 AM
Edited by: sridhar.rachumallu on Nov 30, 2010 8:47 PM

Hi Anuj,
First of all check whether there is any consumer on B2B_IN_Queue or not? You may check it on weblogic admin console.
I am checking for the consumers information in Monitor tab of B2B_IN_Queue and noticed the below information
Consumers Current : 0
Consumers High : 1
Consumers Total : 1
Messages Current : 3
Messages Pending : 0
Messages Total : 3
Messages High : 3
After deployed the BPEL process the value of 'Consumers Current' not updating to 1 from 0.
Values of Consumers Total and Consumers Current not changing after deploying the process or after un deploying the bpel process.
Can you please tell me what is difference between Consumers Total and Consumers Current?
If the path i am using for getting consumers information of B2B_IN_Queue is wrong please suggest correct path in the admin console.
Thanks&Regards,
Sridhar.Rachumallu
Edited by: sridhar.rachumallu on Dec 1, 2010 1:41 AM
Edited by: sridhar.rachumallu on Dec 1, 2010 1:47 AM
Edited by: sridhar.rachumallu on Dec 1, 2010 2:53 AM

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Frequently I see questions and issues around the use of Exception/Error Handling in PL/SQL. More often than not the issue comes from the questioners misunderstanding about how PL/SQL is constructed and executed, so I thought I'd write a small article covering the key concepts to give a clear picture of how it all hangs together. (Note: the examples are just showing examples of the exception handling structure, and should not be taken as truly valid code for ways of handling things)
Exception Handling
Contents
1. Understanding Execution Blocks (part 1)
2. Execution of the Execution Block
3. Exceptions
4. Understanding Execution Blocks (part 2)
5. How to continue exection of statements after an exception
6. User defined exceptions
7. Line number of exception
8. Exceptions within code within the exception block
1. Understanding Execution Blocks (part 1)
The first thing that one needs to understand is almost taking us back to the basics of PL/SQL... how a PL/SQL execution block is constructed.
Essentially an execution block is made of 3 sections...
+---------------------------+
|    Declaration Section    |
+---------------------------+
|    Statements Section    |
+---------------------------+
|     Exception Section     |
+---------------------------+
The Declaration section is the part defined between the PROCEDURE/FUNCTION header or the DECLARE keyword (for anonymous blocks) and the BEGIN keyword. (Optional section)
The Statements section is where your code goes and lies between the BEGIN keyword and the EXCEPTION keyword (or END keyword if there is no EXCEPTION section). (Mandatory section)
The Exception section is where any exception handling goes and lies between the EXCEPTION keyword at the END keyword. (Optional section)
Example of an anonymous block...
DECLARE
.. declarative statements go here ..
BEGIN
.. code statements go here ..
EXCEPTION
.. exception handlers go here ..
END;
Example of a procedure/function block...
[CREATE OR REPLACE] (PROCEDURE|FUNCTION) <proc or fn name> [(<parameters>)] [RETURN <datatype>] (IS|AS)
.. declarative statements go here ..
BEGIN
.. code statements go here ..
EXCEPTION
.. exception handlers go here ..
END;
(Note: The same can also be done for packages, but let's keep it simple)
2. Execution of the Execution Block
This may seem a simple concept, but it's surprising how many people have issues showing they haven't grasped it. When an Execution block is entered, the declaration section is processed, creating a scope of variables, types , cursors, etc. to be visible to the execution block and then execution enters into the Statements section. Each statment in the statements section is executed in turn and when the execution completes the last statment the execution block is exited back to whatever called it.
3. Exceptions
Exceptions generally happen during the execution of statements in the Statements section. When an exception happens the execution of statements jumps immediately into the exception section. In this section we can specify what exceptions we wish to 'capture' or 'trap' and do one of the two following things...
(Note: The exception section still has access to all the declared items in the declaration section)
3.i) Handle the exception
We do this when we recognise what the exception is (most likely it's something we expect to happen) and we have a means of dealing with it so that our application can continue on.
Example...
(without the exception handler the exception is passed back to the calling code, in this case SQL*Plus)
SQL> ed
Wrote file afiedt.buf
1 declare
2    v_name VARCHAR2(20);
3 begin
4    select ename
5    into   v_name
6    from   emp
7    where empno = &empno;
8    dbms_output.put_line(v_name);
9* end;
SQL> /
Enter value for empno: 123
old   7:   where empno = &empno;
new   7:   where empno = 123;
declare
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at line 4
(with an exception handler, we capture the exception, handle it how we want to, and the calling code is happy that there is no error for it to report)
SQL> ed
Wrote file afiedt.buf
1 declare
2    v_name VARCHAR2(20);
3 begin
4    select ename
5    into   v_name
6    from   emp
7    where empno = &empno;
8    dbms_output.put_line(v_name);
9 exception
10    when no_data_found then
11      dbms_output.put_line('There is no employee with this employee number.');
12* end;
SQL> /
Enter value for empno: 123
old   7:   where empno = &empno;
new   7:   where empno = 123;
There is no employee with this employee number.
PL/SQL procedure successfully completed.
3.ii) Raise the exception
We do this when:-
a) we recognise the exception, handle it but still want to let the calling code know that it happened
b) we recognise the exception, wish to log it happened and then let the calling code deal with it
c) we don't recognise the exception and we want the calling code to deal with it
Example of b)
SQL> ed
Wrote file afiedt.buf
1 declare
2    v_name VARCHAR2(20);
3    v_empno NUMBER := &empno;
4 begin
5    select ename
6    into   v_name
7    from   emp
8    where empno = v_empno;
9    dbms_output.put_line(v_name);
10 EXCEPTION
11    WHEN no_data_found THEN
12      INSERT INTO sql_errors (txt)
13      VALUES ('Search for '||v_empno||' failed.');
14      COMMIT;
15      RAISE;
16* end;
SQL> /
Enter value for empno: 123
old   3:   v_empno NUMBER := &empno;
new   3:   v_empno NUMBER := 123;
declare
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at line 15
SQL> select * from sql_errors;
TXT
Search for 123 failed.
SQL>
Example of c)
SQL> ed
Wrote file afiedt.buf
1 declare
2    v_name VARCHAR2(20);
3    v_empno NUMBER := &empno;
4 begin
5    select ename
6    into   v_name
7    from   emp
8    where empno = v_empno;
9    dbms_output.put_line(v_name);
10 EXCEPTION
11    WHEN no_data_found THEN
12      INSERT INTO sql_errors (txt)
13      VALUES ('Search for '||v_empno||' failed.');
14      COMMIT;
15      RAISE;
16    WHEN others THEN
17      RAISE;
18* end;
SQL> /
Enter value for empno: 'ABC'
old   3:   v_empno NUMBER := &empno;
new   3:   v_empno NUMBER := 'ABC';
declare
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at line 3
SQL> select * from sql_errors;
TXT
Search for 123 failed.
SQL>
As you can see from the sql_errors log table, no log was written so the WHEN others exception was the exception that raised the error to the calling code (SQL*Plus)
4. Understanding Execution Blocks (part 2)
Ok, so now we understand the very basics of an execution block and what happens when an exception happens. Let's take it a step further...
Execution blocks are not just a single simple block in most cases. Often, during our statements section we have a need to call some reusable code and we do that by calling a procedure or function. Effectively this nests the procedure or function's code as another execution block within the current statement section so, in terms of execution, we end up with something like...
+---------------------------------+
|    Declaration Section          |
+---------------------------------+
|    Statements Section          |
|            .                    |
| +---------------------------+ |
| |    Declaration Section    | |
| +---------------------------+ |
| |    Statements Section    | |
| +---------------------------+ |
| |     Exception Section     | |
| +---------------------------+ |
|            .                    |
+---------------------------------+
|     Exception Section           |
+---------------------------------+
Example... (Note: log_trace just writes some text to a table for tracing)
SQL> create or replace procedure a as
2    v_dummy NUMBER := log_trace('Procedure A''s Declaration Section');
3 begin
4    v_dummy := log_trace('Procedure A''s Statement Section');
5    v_dummy := 1/0; -- cause an exception
6 exception
7    when others then
8      v_dummy := log_trace('Procedure A''s Exception Section');
9      raise;
10 end;
11 /
Procedure created.
SQL> create or replace procedure b as
2    v_dummy NUMBER := log_trace('Procedure B''s Declaration Section');
3 begin
4    v_dummy := log_trace('Procedure B''s Statement Section');
5    a; -- HERE the execution passes to the declare/statement/exception sections of A
6 exception
7    when others then
8      v_dummy := log_trace('Procedure B''s Exception Section');
9      raise;
10 end;
11 /
Procedure created.
SQL> exec b;
BEGIN b; END;
ERROR at line 1:
ORA-01476: divisor is equal to zero
ORA-06512: at "SCOTT.B", line 9
ORA-06512: at line 1
SQL> select * from code_trace;
TXT
Procedure B's Declaration Section
Procedure B's Statement Section
Procedure A's Declaration Section
Procedure A's Statement Section
Procedure A's Exception Section
Procedure B's Exception Section
6 rows selected.
SQL>
Likewise, execution blocks can be nested deeper and deeper.
5. How to continue exection of statements after an exception
One of the common questions asked is how to return execution to the statement after the one that created the exception and continue on.
Well, firstly, you can only do this for statements you expect to raise an exception, such as when you want to check if there is no data found in a query.
If you consider what's been shown above you could put any statement you expect to cause an exception inside it's own procedure or function with it's own exception section to handle the exception without raising it back to the calling code. However, the nature of procedures and functions is really to provide a means of re-using code, so if it's a statement you only use once it seems a little silly to go creating individual procedures for these.
Instead, you nest execution blocks directly, to give the same result as shown in the diagram at the start of part 4 of this article.
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure b (p_empno IN VARCHAR2) as
2    v_dummy NUMBER := log_trace('Procedure B''s Declaration Section');
3 begin
4    v_dummy := log_trace('Procedure B''s Statement Section');
5    -- Here we start another execution block nested in the first one...
6    declare
7      v_dummy NUMBER := log_trace('Nested Block Declaration Section');
8    begin
9      v_dummy := log_trace('Nested Block Statement Section');
10      select empno
11        into   v_dummy
12        from   emp
13       where empno = p_empno; -- Note: the parameters and variables from
                                     parent execution block are available to use!
14    exception
15      when no_data_found then
16        -- This is an exception we can handle so we don't raise it
17        v_dummy := log_trace('No employee was found');
18        v_dummy := log_trace('Nested Block Exception Section - Exception Handled');
19      when others then
20        -- Other exceptions we can't handle so we raise them
21        v_dummy := log_trace('Nested Block Exception Section - Exception Raised');
22        raise;
23    end;
24    -- ...Here endeth the nested execution block
25    -- As the nested block handled it's exception we come back to here...
26    v_dummy := log_trace('Procedure B''s Statement Section Continued');
27 exception
28    when others then
29      -- We'll only get to here if an unhandled exception was raised
30      -- either in the nested block or in procedure b's statement section
31      v_dummy := log_trace('Procedure B''s Exception Section');
32      raise;
33* end;
SQL> /
Procedure created.
SQL> exec b(123);
PL/SQL procedure successfully completed.
SQL> select * from code_trace;
TXT
Procedure B's Declaration Section
Procedure B's Statement Section
Nested Block Declaration Section
Nested Block Statement Section
No employee was found
Nested Block Exception Section - Exception Handled
Procedure B's Statement Section Continued
7 rows selected.
SQL> truncate table code_trace;
Table truncated.
SQL> exec b('ABC');
BEGIN b('ABC'); END;
ERROR at line 1:
ORA-01722: invalid number
ORA-06512: at "SCOTT.B", line 32
ORA-06512: at line 1
SQL> select * from code_trace;
TXT
Procedure B's Declaration Section
Procedure B's Statement Section
Nested Block Declaration Section
Nested Block Statement Section
Nested Block Exception Section - Exception Raised
Procedure B's Exception Section
6 rows selected.
SQL>
You can see from this that, very simply, the code that we expected may have an exception was able to either handle the exception and return to the outer execution block to continue execution, or if an unexpected exception occurred then it was able to be raised up to the outer exception section.
6. User defined exceptions
There are three sorts of 'User Defined' exceptions. There are logical situations (e.g. business logic) where, for example, certain criteria are not met to complete a task, and there are existing Oracle errors that you wish to give a name to in order to capture them in the exception section. The third is raising your own exception messages with our own exception numbers. Let's look at the first one...
Let's say I have tables which detail stock availablility and reorder levels...
SQL> select * from reorder_level;
   ITEM_ID STOCK_LEVEL
         1          20
         2          20
         3          10
         4           2
         5           2
SQL> select * from stock;
   ITEM_ID ITEM_DESC STOCK_LEVEL
         1 Pencils             10
         2 Pens                 2
         3 Notepads            25
         4 Stapler              5
         5 Hole Punch           3
SQL>
Now, our Business has told the administrative clerk to check stock levels and re-order anything that is below the re-order level, but not to hold stock of more than 4 times the re-order level for any particular item. As an IT department we've been asked to put together an application that will automatically produce the re-order documents upon the clerks request and, because our company is so tight-ar*ed about money, they don't want to waste any paper with incorrect printouts so we have to ensure the clerk can't order things they shouldn't.
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure re_order(p_item_id NUMBER, p_quantity NUMBER) is
2    cursor cur_stock_reorder is
3      select s.stock_level
4            ,r.stock_level as reorder_level
5            ,(r.stock_level*4) as reorder_limit
6      from stock s join reorder_level r on (s.item_id = r.item_id)
7      where s.item_id = p_item_id;
8    --
9    v_stock cur_stock_reorder%ROWTYPE;
10 begin
11    OPEN cur_stock_reorder;
12    FETCH cur_stock_reorder INTO v_stock;
13    IF cur_stock_reorder%NOTFOUND THEN
14      RAISE no_data_found;
15    END IF;
16    CLOSE cur_stock_reorder;
17    --
18    IF v_stock.stock_level >= v_stock.reorder_level THEN
19      -- Stock is not low enough to warrant an order
20      DBMS_OUTPUT.PUT_LINE('Stock has not reached re-order level yet!');
21    ELSE
22      IF v_stock.stock_level + p_quantity > v_stock.reorder_limit THEN
23        -- Required amount is over-ordering
24        DBMS_OUTPUT.PUT_LINE('Quantity specified is too much. Max for this item: '
                                 ||to_char(v_stock.reorder_limit-v_stock.stock_level));
25      ELSE
26        DBMS_OUTPUT.PUT_LINE('Order OK. Printing Order...');
27        -- Here goes our code to print the order
28      END IF;
29    END IF;
30    --
31 exception
32    WHEN no_data_found THEN
33      CLOSE cur_stock_reorder;
34      DBMS_OUTPUT.PUT_LINE('Invalid Item ID.');
35* end;
SQL> /
Procedure created.
SQL> exec re_order(10,100);
Invalid Item ID.
PL/SQL procedure successfully completed.
SQL> exec re_order(3,40);
Stock has not reached re-order level yet!
PL/SQL procedure successfully completed.
SQL> exec re_order(1,100);
Quantity specified is too much. Max for this item: 70
PL/SQL procedure successfully completed.
SQL> exec re_order(2,50);
Order OK. Printing Order...
PL/SQL procedure successfully completed.
SQL>
Ok, so that code works, but it's a bit messy with all those nested IF statements. Is there a cleaner way perhaps? Wouldn't it be nice if we could set up our own exceptions...
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure re_order(p_item_id NUMBER, p_quantity NUMBER) is
2    cursor cur_stock_reorder is
3      select s.stock_level
4            ,r.stock_level as reorder_level
5            ,(r.stock_level*4) as reorder_limit
6      from stock s join reorder_level r on (s.item_id = r.item_id)
7      where s.item_id = p_item_id;
8    --
9    v_stock cur_stock_reorder%ROWTYPE;
10    --
11    -- Let's declare our own exceptions for business logic...
12    exc_not_warranted EXCEPTION;
13    exc_too_much      EXCEPTION;
14 begin
15    OPEN cur_stock_reorder;
16    FETCH cur_stock_reorder INTO v_stock;
17    IF cur_stock_reorder%NOTFOUND THEN
18      RAISE no_data_found;
19    END IF;
20    CLOSE cur_stock_reorder;
21    --
22    IF v_stock.stock_level >= v_stock.reorder_level THEN
23      -- Stock is not low enough to warrant an order
24      RAISE exc_not_warranted;
25    END IF;
26    --
27    IF v_stock.stock_level + p_quantity > v_stock.reorder_limit THEN
28      -- Required amount is over-ordering
29      RAISE exc_too_much;
30    END IF;
31    --
32    DBMS_OUTPUT.PUT_LINE('Order OK. Printing Order...');
33    -- Here goes our code to print the order
34    --
35 exception
36    WHEN no_data_found THEN
37      CLOSE cur_stock_reorder;
38      DBMS_OUTPUT.PUT_LINE('Invalid Item ID.');
39    WHEN exc_not_warranted THEN
40      DBMS_OUTPUT.PUT_LINE('Stock has not reached re-order level yet!');
41    WHEN exc_too_much THEN
42      DBMS_OUTPUT.PUT_LINE('Quantity specified is too much. Max for this item: '
                              ||to_char(v_stock.reorder_limit-v_stock.stock_level));
43* end;
SQL> /
Procedure created.
SQL> exec re_order(10,100);
Invalid Item ID.
PL/SQL procedure successfully completed.
SQL> exec re_order(3,40);
Stock has not reached re-order level yet!
PL/SQL procedure successfully completed.
SQL> exec re_order(1,100);
Quantity specified is too much. Max for this item: 70
PL/SQL procedure successfully completed.
SQL> exec re_order(2,50);
Order OK. Printing Order...
PL/SQL procedure successfully completed.
SQL>
That's better. And now we don't have to use all those nested IF statements and worry about it accidently getting to code that will print the order out as, once one of our user defined exceptions is raised, execution goes from the Statements section into the Exception section and all handling of errors is done in one place.
Now for the second sort of user defined exception...
A new requirement has come in from the Finance department who want to have details shown on the order that show a re-order 'indicator' based on the formula ((maximum allowed stock - current stock)/re-order quantity), so this needs calculating and passing to the report...
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure re_order(p_item_id NUMBER, p_quantity NUMBER) is
2    cursor cur_stock_reorder is
3      select s.stock_level
4            ,r.stock_level as reorder_level
5            ,(r.stock_level*4) as reorder_limit
6            ,(((r.stock_level*4)-s.stock_level)/p_quantity) as finance_factor
7      from stock s join reorder_level r on (s.item_id = r.item_id)
8      where s.item_id = p_item_id;
9    --
10    v_stock cur_stock_reorder%ROWTYPE;
11    --
12    -- Let's declare our own exceptions for business logic...
13    exc_not_warranted EXCEPTION;
14    exc_too_much      EXCEPTION;
15 begin
16    OPEN cur_stock_reorder;
17    FETCH cur_stock_reorder INTO v_stock;
18    IF cur_stock_reorder%NOTFOUND THEN
19      RAISE no_data_found;
20    END IF;
21    CLOSE cur_stock_reorder;
22    --
23    IF v_stock.stock_level >= v_stock.reorder_level THEN
24      -- Stock is not low enough to warrant an order
25      RAISE exc_not_warranted;
26    END IF;
27    --
28    IF v_stock.stock_level + p_quantity > v_stock.reorder_limit THEN
29      -- Required amount is over-ordering
30      RAISE exc_too_much;
31    END IF;
32    --
33    DBMS_OUTPUT.PUT_LINE('Order OK. Printing Order...');
34    -- Here goes our code to print the order, passing the finance_factor
35    --
36 exception
37    WHEN no_data_found THEN
38      CLOSE cur_stock_reorder;
39      DBMS_OUTPUT.PUT_LINE('Invalid Item ID.');
40    WHEN exc_not_warranted THEN
41      DBMS_OUTPUT.PUT_LINE('Stock has not reached re-order level yet!');
42    WHEN exc_too_much THEN
43      DBMS_OUTPUT.PUT_LINE('Quantity specified is too much. Max for this item: '
                              ||to_char(v_stock.reorder_limit-v_stock.stock_level));
44* end;
SQL> /
Procedure created.
SQL> exec re_order(2,40);
Order OK. Printing Order...
PL/SQL procedure successfully completed.
SQL> exec re_order(2,0);
BEGIN re_order(2,0); END;
ERROR at line 1:
ORA-01476: divisor is equal to zero
ORA-06512: at "SCOTT.RE_ORDER", line 17
ORA-06512: at line 1
SQL>
Hmm, there's a problem if the person specifies a re-order quantity of zero. It raises an unhandled exception.
Well, we could put a condition/check into our code to make sure the parameter is not zero, but again we would be wrapping our code in an IF statement and not dealing with the exception in the exception handler.
We could do as we did before and just include a simple IF statement to check the value and raise our own user defined exception but, in this instance the error is standard Oracle error (ORA-01476) so we should be able to capture it inside the exception handler anyway... however...
EXCEPTION
WHEN ORA-01476 THEN
... is not valid. What we need is to give this Oracle error a name.
This is done by declaring a user defined exception as we did before and then associating that name with the error number using the PRAGMA EXCEPTION_INIT statement in the declaration section.
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure re_order(p_item_id NUMBER, p_quantity NUMBER) is
2    cursor cur_stock_reorder is
3      select s.stock_level
4            ,r.stock_level as reorder_level
5            ,(r.stock_level*4) as reorder_limit
6            ,(((r.stock_level*4)-s.stock_level)/p_quantity) as finance_factor
7      from stock s join reorder_level r on (s.item_id = r.item_id)
8      where s.item_id = p_item_id;
9    --
10    v_stock cur_stock_reorder%ROWTYPE;
11    --
12    -- Let's declare our own exceptions for business logic...
13    exc_not_warranted EXCEPTION;
14    exc_too_much      EXCEPTION;
15    --
16    exc_zero_quantity EXCEPTION;
17    PRAGMA EXCEPTION_INIT(exc_zero_quantity, -1476);
18 begin
19    OPEN cur_stock_reorder;
20    FETCH cur_stock_reorder INTO v_stock;
21    IF cur_stock_reorder%NOTFOUND THEN
22      RAISE no_data_found;
23    END IF;
24    CLOSE cur_stock_reorder;
25    --
26    IF v_stock.stock_level >= v_stock.reorder_level THEN
27      -- Stock is not low enough to warrant an order
28      RAISE exc_not_warranted;
29    END IF;
30    --
31    IF v_stock.stock_level + p_quantity > v_stock.reorder_limit THEN
32      -- Required amount is over-ordering
33      RAISE exc_too_much;
34    END IF;
35    --
36    DBMS_OUTPUT.PUT_LINE('Order OK. Printing Order...');
37    -- Here goes our code to print the order, passing the finance_factor
38    --
39 exception
40    WHEN exc_zero_quantity THEN
41      DBMS_OUTPUT.PUT_LINE('Quantity of 0 (zero) is invalid.');
42    WHEN no_data_found THEN
43      CLOSE cur_stock_reorder;
44      DBMS_OUTPUT.PUT_LINE('Invalid Item ID.');
45    WHEN exc_not_warranted THEN
46      DBMS_OUTPUT.PUT_LINE('Stock has not reached re-order level yet!');
47    WHEN exc_too_much THEN
48      DBMS_OUTPUT.PUT_LINE('Quantity specified is too much. Max for this item: '
                              ||to_char(v_stock.reorder_limit-v_stock.stock_level));
49* end;
SQL> /
Procedure created.
SQL> exec re_order(2,0);
Quantity of 0 (zero) is invalid.
PL/SQL procedure successfully completed.
SQL>
Lastly, let's look at raising our own exceptions with our own exception numbers...
SQL> ed
Wrote file afiedt.buf
1 create or replace procedure re_order(p_item_id NUMBER, p_quantity NUMBER) is
2    cursor cur_stock_reorder is
3      select s.stock_level
4            ,r.stock_level as reorder_level
5            ,(r.stock_level*4) as reorder_limit
6            ,(((r.stock_level*4)-s.stock_level)/p_quantity) as finance_factor
7      from stock s join reorder_level r on (s.item_id = r.item_id)
8      where s.item_id = p_item_id;
9    --
10    v_stock cur_stock_reorder%ROWTYPE;
11    --
12    exc_zero_quantity EXCEPTION;
13    PRAGMA EXCEPTION_INIT(exc_zero_quantity, -1476);
14 begin
15    OPEN cur_stock_reorder;
16    FETCH cur_stock_reorder INTO v_stock;
17    IF cur_stock_reorder%NOTFOUND THEN
18      RAISE no_data_found;
19    END IF;
20    CLOSE cur_stock_reorder;
21    --
22    IF v_stock.stock_level >= v_stock.reorder_level THEN
23      -- Stock is not low enough to warrant an order
24      [b]RAISE_APPLICATION_ERROR(-20000, 'Stock has not reached re-order level yet!');[/b]
25    END IF;
26    --
27    IF v_stock.stock_level + p_quantity > v_stock.reorder_limit THEN
28      -- Required amount is over-ordering
29

its nice article, have put up this one the blog
site,Nah, I don't have time to blog, but if one of the other Ace's/Experts wants to copy it to a blog with reference back to here (and all due credit given ;)) then that's fine by me.
I'd go for a book like "Selected articles by OTN members" or something. Does anybody have a list of links of all those mentioned articles?Just these ones I've bookmarked...
Introduction to regular expressions ... by CD
When your query takes too long ... by Rob van Wijk
How to pipeline a function with a dynamic number of columns? by ascheffer
PL/SQL 101 : Exception Handling by BluShadow

Delete Statement Exception Handling

Hi guys,
I have a problem in my procedure. There are 3 parameters that I am passing into the procedure. I am matching these parameters to those in the table to delete one record at a time.
For example if I would like to delete the record with the values ('900682',3,'29-JUL-2008') as parameters, it deletes the record from the table but then again when I execute it with the same parameters it should show me an error message but it again says 'Deleted the Transcript Request.....' Can you please help me with this?
PROCEDURE p_delete_szptpsr_1 (p_shttran_id IN saturn.shttran.shttran_id%TYPE,
p_shttran_seq_no IN saturn.shttran.shttran_seq_no%TYPE,
p_shttran_request_date IN saturn.shttran.shttran_request_date%TYPE) IS
BEGIN
DELETE FROM saturn.shttran
WHERE shttran.shttran_id = p_shttran_id
and shttran.shttran_seq_no = p_shttran_seq_no
and trunc(shttran_request_date) = trunc(p_shttran_request_date);
DBMS_OUTPUT.PUT_LINE('Deleted the Transcript Request Seq No (' || p_shttran_seq_no || ') of the Student (' || p_shttran_id ||') for the requested date of (' || p_shttran_request_date ||')');
COMMIT;
EXCEPTION WHEN NO_DATA_FOUND THEN
DBMS_OUTPUT.PUT_LINE('Error: The supplied Notre Dame Student ID = (' || p_shttran_id ||
'), Transcript Request No = (' || p_shttran_seq_no || '), Request Date = (' || p_shttran_request_date || ') was not found.');
END p_delete_szptpsr_1;
Should I have a SELECT statement to use NO_DATA_FOUND ???

A DELETE statement that deletes no rows (just like an UPDATE statement that updates no rows) is not an error to Oracle. Oracle won't throw any exception.
If you want your code to throw an exception, you'll need to write that logic. You could throw a NO_DATA_FOUND exception yourself, i.e.
IF( SQL%ROWCOUNT = 0 )
THEN
RAISE no_data_found;
END IF;If you are just going to catch the exception, though, you could just embed whatever code you would use to handle the exception in your IF statement, i.e.
IF( SQL%ROWCOUNT = 0 )
THEN
<<do something about the exception>>
END IF;In your original code, your exception handler is just a DBMS_OUTPUT statement. That is incredibly dangerous in real production code. You are relying on the fact that the client has enabled output, that the client has allocated a large enough buffer, that the user is going to see the message, and that the procedure will never be called from any piece of code that would ever care if it succeeded or failed. There are vanishingly few situations where those are safe things to rely on.
Justin

Exception handling is not working in GCC compile shared object

Hello,
I am facing very strange issue on Solaris x86_64 platform with C++ code compiled usging gcc.3.4.3.
I have compiled shared object that load into web server process space while initialization. Whenever any exception generate in code base, it is not being caught by exception handler. Even though exception handlers are there. Same code is working fine since long time but on Solaris x86, Sparc arch, Linux platform
With Dbx, I am getting following stack trace.
Stack trace is
dbx: internal error: reference through NULL pointer at line 973 in file symbol.cc
[1] 0x11335(0x1, 0x1, 0x474e5543432b2b00, 0x59cb60, 0xfffffd7fffdff2b0, 0x11335), at 0x11335
---- hidden frames, use 'where -h' to see them all ----
=>[4] __cxa_throw(obj = (nil), tinfo = (nil), dest = (nil), , line 75 in "eh_throw.cc"
[5] OBWebGate_Authent(r = 0xfffffd7fff3fb300), line 86 in "apache.cpp"
[6] ap_run_post_config(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x444624
[7] main(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x42c39a
I am using following link options.
Compile option is
/usr/sfw/bin/g++ -c -I/scratch/ashishas/view_storage/build/coreid1014/palantir/apache22/solaris-x86_64/include -m64 -fPIC -D_REENTRANT -Wall -g -o apache.o apache.cpp
Link option is
/usr/sfw/bin/g++ -shared -m64 -o apache.so apache.o -lsocket -lnsl -ldl -lpthread -lthread
At line 86, we are just throwing simple exception which have catch handlers in place. Also we do have catch(...) handler as well.
Surpursing things are..same issue didn't observe if we make it as executable.
Issue only comes if this is shared object loaded on webserver. If this is plain shared object, opened by anyother exe, it works fine.
Can someone help me out. This is completly blocking issue for us. Using Solaris Sun Studio compiler is no option as of now.

shared object that load into web server process space
... same issue didn't observe if we make it as executable.When you "inject" your shared object into some other process a well-being of your exception handling depends on that other process.
Mechanics of x64 stack traversing (unwind) performed when you throw the exception is quite complicated,
particularly involving a "nearly-standartized" Unwind interface (say, Unwind_RaiseException).
When we are talking about g++ on Solaris there are two implementations of unwind interface, one in libc and one in libgcc_s.so.
When you g++-compile the executable you get it directly linked with libgcc_s.so and Unwind stuff resolves into libgccs.
When g++-compiled shared object is loaded into non-g++-compiled executable's process _Unwind calls are most likely already resolved into Solaris libc.
Thats why you might see the difference.
Now, what exactly causes this difference can vary, I can only speculate.
All that would not be a problem if _Unwind interface was completely standartized and properly implemented.
However there are two issues currently:
* gcc (libstdc++ in particular) happens to use additional non-standard _Unwind calls which are not present in Solaris libc
naturally, implementation details of Unwind implementation in libc differs to that of libgccs, so when all the standard _Unwind
routines are resolved into Solaris version and one non-standard _Unwind routine is resolved into gcc version you get a problem
(most likely that is what happens with you)
* libc Unwind sometimes is unable to decipher the code generated by gcc.
However that is likely to happen with modern gcc (say, 4.4+) and not that likely with 3.4.3
Btw, you can check your call frame to see where _Unwind calls come from:
where -h -lIf you indeed stomped on "mixed _Unwind" problem then the only chance for you is to play with linker
so it binds Unwind stuff from your library directly into libgccs.
Not tried it myself though.
regards,
__Fedor.

Exception handling to catch the outcome of a select

Hello,
I want to use exception handling to exit me out of a function module. I want to have one exception for all errors.
For example, if this select statement does not work, how do I finish up this code to make it work.
error type cx_bsx
try
select * from t001 where BUKRS = '!@#$'
catch <not sure what> into INTO error
raise exception error
endtry.
When I use cx_bsx with the catch, nothing happens even though the select statement fails. Basically I want the catch to work in the same manner as this:
if sy-subrc ne 0.
raise error_table_read.
endif.

If this code is in a function module, then why not just use the function module exceptions.
if sy-subrc ne 0.
raise error_table_read.
endif.
What are you gaining by "catching" this exception in the function module. By using the "exceptions" part of the function module, you are passing this exception back to the calling program.
Regards,
Rich Heilman

Exception handling for all the insert statements in the proc

CREATE PROCEDURE TEST (
@IncrStartDate DATE
,@IncrEndDate DATE
,@SourceRowCount INT OUTPUT
,@TargetRowCount INT OUTPUT
,@ErrorNumber INT OUTPUT
,@ErrorMessage VARCHAR(4000) OUTPUT
,@InsertCase INT --INSERT CASE INPUT
WITH
EXEC AS CALLER AS
BEGIN --Main Begin
SET NOCOUNT ON
BEGIN TRY
DECLARE @SuccessNumber INT = 0
,@SuccessMessage VARCHAR(100) = 'SUCCESS'
,@BenchMarkLoadFlag CHAR(1)
,@BenchmarkFlow INT
,@MonthYearStart DATE
,@MonthYearEnd DATE
,@StartDate DATE
,@EndDate DATE
/* Setting the default values of output parameters to 0.*/
SET @SourceRowCount = 0
SET @TargetRowCount = 0
/*Setting the Start and end date for looping */
SET @MonthYearStart = @IncrStartDate;
SET @MonthYearEnd = @IncrEndDate;
/* Setting the @InsertCase will ensure case wise insertion as this sp will load data in different tables
@InsertCase =0 means data will be inserted in the target TAB1
@InsertCase =1 means data will be inserted in the target TAB2
@InsertCase =2 means data will be inserted in the target TAB3
@InsertCase =3 means data will be inserted in the target TAB4
@InsertCase =4 means data will be inserted in the target TAB5
@InsertCase =5 means data will be inserted in the target TAB6
if @InsertCase =0
WHILE (@MonthYearStart <= @MonthYearEnd)
BEGIN
SET @StartDate = @MonthYearStart;
SET @EndDate = @MonthYearEnd;
/* Delete from target where date range given from input parameter*/
DELETE FROM TAB1
WHERE [MONTH] BETWEEN MONTH(@StartDate) AND MONTH(@EndDate)
AND [YEAR] BETWEEN year(@StartDate) and year(@EndDate)
/*Insert data in target-TAB1 */
BEGIN TRANSACTION
INSERT INTO TAB1
A,B,C
SELECT
A,BC
FROM XYZ
COMMIT TRANSACTION
SET @MonthYearStart = DATEADD(MONTH, 1, @MonthYearStart)
SELECT @TargetRowCount = @TargetRowCount + @@ROWCOUNT;
END -- End of whileloop
END TRY
BEGIN CATCH
IF @@TRANCOUNT>0
ROLLBACK TRANSACTION
SELECT @ErrorNumber = ERROR_NUMBER() ,@ErrorMessage = ERROR_MESSAGE();
END CATCH
END--End of Main Begin
I have the above proc inserting data based on parameters where in @InsertCase is used for case wise execution.
I have written the whole proc with exception handling using try catch block.
I have just added one insert statement here for 1 case now I need to add further insert cases
INSERT INTO TAB4
                A,B,C
SELECT
                                A,BC
FROM XYZ
INSERT INTO TAB3
                A,B,C
SELECT
                                A,BC
FROM XYZ
INSERT INTO TAB2
                A,B,C
SELECT
                                A,BC
FROM XYZ
I will be using following to insert further insert statements
if @InsertCase =1
I just needed to know where will be my next insert statement should be fitting int his code so that i cover exception handling for all the code
Mudassar

Hi Erland & Mudassar, I have attempted to recreate Mudassar's original problem..here is my TABLE script;
USE [MSDNTSQL]
GO
/****** Object: Table [dbo].[TAB1] Script Date: 2/5/2014 7:47:48 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[TAB1](
[COL1] [nvarchar](1) NULL,
[COL2] [nvarchar](1) NULL,
[COL3] [nvarchar](1) NULL,
[START_MONTH] [int] NULL,
[END_MONTH] [int] NULL,
[START_YEAR] [int] NULL,
[END_YEAR] [int] NULL
) ON [PRIMARY]
GO
Then here is a CREATE script for the SPROC..;
USE [MSDNTSQL]
GO
/****** Object: StoredProcedure [dbo].[TryCatchTransactions1] Script Date: 2/5/2014 7:51:33 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[TryCatchTransactions1] (
@IncrStartDate DATE
,@IncrEndDate DATE
,@SourceRowCount INT OUTPUT
,@TargetRowCount INT OUTPUT
,@ErrorNumber INT OUTPUT
,@ErrorMessage VARCHAR(4000) OUTPUT
,@InsertCase INT --INSERT CASE INPUT
WITH
EXEC AS CALLER AS
BEGIN --Main Begin
SET NOCOUNT ON
BEGIN TRY
DECLARE @SuccessNumber INT = 0
,@SuccessMessage VARCHAR(100) = 'SUCCESS'
,@BenchMarkLoadFlag CHAR(1)
,@BenchmarkFlow INT
,@MonthYearStart DATE
,@MonthYearEnd DATE
,@StartDate DATE
,@EndDate DATE
/* Setting the default values of output parameters to 0.*/
SET @SourceRowCount = 0
SET @TargetRowCount = 0
/*Setting the Start and end date for looping */
SET @MonthYearStart = @IncrStartDate;
SET @MonthYearEnd = @IncrEndDate;
/* Setting the @InsertCase will ensure case wise insertion as this sp will load data in different tables
@InsertCase =0 means data will be inserted in the target TAB1
@InsertCase =1 means data will be inserted in the target TAB2
@InsertCase =2 means data will be inserted in the target TAB3
@InsertCase =3 means data will be inserted in the target TAB4
@InsertCase =4 means data will be inserted in the target TAB5
@InsertCase =5 means data will be inserted in the target TAB6
IF @InsertCase =0
WHILE (@MonthYearStart <= @MonthYearEnd)
BEGIN
SET @StartDate = @MonthYearStart;
SET @EndDate = @MonthYearEnd;
/* Delete from target where date range given from input parameter*/
DELETE FROM TAB1
WHERE START_MONTH BETWEEN MONTH(@StartDate) AND MONTH(@EndDate)
AND START_YEAR BETWEEN year(@StartDate) and YEAR(@EndDate)
/*Insert data in target-TAB1 */
BEGIN TRANSACTION
INSERT INTO TAB1 (COL1,COL2,COL3)
VALUES ('Z','X','Y')
SELECT COL1, COL2, COL3
FROM TAB1
COMMIT TRANSACTION
SET @MonthYearStart = DATEADD(MONTH, 1, @MonthYearStart)
SELECT @TargetRowCount = @TargetRowCount + @@ROWCOUNT;
END -- End of whileloop
END TRY
BEGIN CATCH
IF @@TRANCOUNT > 0
ROLLBACK TRANSACTION
SELECT @ErrorNumber = ERROR_NUMBER() ,@ErrorMessage = ERROR_MESSAGE();
END CATCH
PRINT @SUCCESSMESSAGE
END--End of Main Begin
GO
I am just trying to help --danny rosales
UML, then code

ADF Task Flow Exception Handling

Hi ,
I tried a very simple thing for taskFlow exception handling.
I created a bounded task flow with a page fragment (View1.jsff) and another view which is the TaskFlow ExceptionHandler (error.jsff).
The view1.jsff has a button whose action is bound to the backing bean. In the backingBean method I deliberately do division by 0.
Since this is an unHandled exception, I would have expected the control to come to error.jsff. But, instead I am shown a pop up box with the error message.
Why is the control not getting redirected to error.jsff ?
Thanks.
S.Srivatsa Sivan

Hi Frank , im having the same problem.
I want to handle exceptions that occur while navigating task flows (example: A user navigates to a task flow that he/she does not have view permission)
I tried using a view activity and method activity as the exception handler but none of them works, the exception is still not handles. It does not even navigate to the exception handler on the task flow.
on the view page i have:
<af:panelStretchLayout topHeight="50px" id="psl1">
<f:facet name="top">
<af:panelGroupLayout layout="scroll"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich"
id="pgl1">
Error message:
<af:outputText value="#{controllerContext.currentRootViewPort.exceptionData.message}" id="ot2"/>
</af:panelGroupLayout>
</f:facet>
<f:facet name="center">
<af:outputText value="#{my_exception_Handler.stackTrace}" id="ot1"/>

</f:facet>
</af:panelStretchLayout>
I tried getting the error message and stacktrace from the controllerContext via EL like this "#{controllerContext.currentRootViewPort.exceptionData.message}"
and from the controllerContext class in functions that i have declared in my_exception_Handler class like this
" ControllerContext ctx = ControllerContext.getInstance();
ViewPortContext vCtx = ctx.getCurrentViewPort();
if(vCtx.getExceptionData() != null){
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
vCtx.getExceptionData().printStackTrace(printWriter);
return stringWriter.toString();"
But all this dont even matter because when the exception occurs on the task flow it does not navigate to the default exception handler.
thanks for your interest and help in advance.
Cyborg_0912

Using Exception Handler in an ADF Task Flow

Hi folks.
Today I gave a try on Exception Handling. while i go through the blog.
https://blogs.oracle.com/ADFProgrammers/entry/using_exception_handler_in_an
I cant able to attain the Solution 2: Re-Routing the task flow to display an error page As per the Figure 9 i make it out.
but it is not navigating error.jsff.
Taskflow return is not working i hope. only Exception thrown only happens from method.
anyone help me out. what I'm missing ?
- jdev 11.1.1.6.0

hi,
is there anyone help me out of this issue.

Issue with exception Handling in GG

Hi,
I have bi-directional DML replication setup. I have written a code in replication parameter for handling the exception , Exception handling is working fine my replicate process is not getting ABENDED but Issue is I am not geeting any rows in EXCEPTION table.I had gone through replicat report, there I had seen GG is trying to inser duplicate records in EXCEPTION TABLE and it is failing because of that .
**Command for create Exception Table is-**
create table ggs_admin.exceptions (
rep_name      varchar2(8) ,
table_name      varchar2(61) ,
errno      number ,
dberrmsg      varchar2(4000) ,
optype               varchar2(20) ,
errtype           varchar2(20) ,
logrba               number ,
logposition          number ,
committimestamp      timestamp,
CONSTRAINT pk_exceptions PRIMARY KEY (logrba, logposition, committimestamp)
USING INDEX
TABLESPACE INDX1
TABLESPACE dbdat1
My replication parameter is-
GGSCI (db) 1> view params rep2
-- Replicator parameter file to apply changes
REPLICAT rep2
ASSUMETARGETDEFS
USERID ggs_admin, PASSWORD ggs_admin
DISCARDFILE /u01/app/oracle/product/gg/dirdat/rep2_discard.dsc, PURGE
-- Start of the macro
MACRO #exception_handler
BEGIN
, TARGET ggs_admin.exceptions
, COLMAP ( rep_name = "REP2"
, table_name = @GETENV ("GGHEADER", "TABLENAME")
, errno = @GETENV ("LASTERR", "DBERRNUM")
, dberrmsg = @GETENV ("LASTERR", "DBERRMSG")
, optype = @GETENV ("LASTERR", "OPTYPE")
, errtype = @GETENV ("LASTERR", "ERRTYPE")
, logrba = @GETENV ("GGHEADER", "LOGRBA")
, logposition = @GETENV ("GGHEADER", "LOGPOSITION")
, committimestamp = @GETENV ("GGHEADER", "COMMITTIMESTAMP"))
, INSERTALLRECORDS
, EXCEPTIONSONLY;
END;
-- End of the macro
REPERROR (DEFAULT, EXCEPTION)
--REPERROR (-1, EXCEPTION)
--REPERROR (-1403, EXCEPTION)
MAP scr.order_items, TARGET scr.order_items;
MAP scr.order_items #exception_handler();
GGSCI (db) 2>view params rep2
MAP resolved (entry scr.order_items):
MAP "scr"."order_items" TARGET ggs_admin.exceptions , COLMAP ( rep_name = "REP2" , table_name = @GETENV ("GGHEADER", "TABLENAME") , errno = @GETENV ("LASTERR", "DB
ERRNUM") , dberrmsg = @GETENV ("LASTERR", "DBERRMSG") , optype = @GETENV ("LASTERR", "OPTYPE") , errtype = @GETENV ("LASTERR", "ERRTYPE") , logrba = @GETENV ("GGHEADER"
, "LOGRBA") , logposition = @GETENV ("GGHEADER", "LOGPOSITION") , committimestamp = @GETENV ("GGHEADER", "COMMITTIMESTAMP")) , INSERTALLRECORDS , EXCEPTIONSONLY;;
Using the following key columns for target table GGS_ADMIN.EXCEPTIONS: LOGRBA, LOGPOSITION, COMMITTIMESTAMP.
2012-08-30 09:09:00 WARNING OGG-01154 SQL error 1403 mapping scr.order_items to scr.order_items OCI Error ORA-01403: no data found, SQL <DELETE FROM "scr"."order_items" WHERE "SUBSCRIBER_ID" = :b0>.
2012-08-30 09:09:00 WARNING OGG-00869 OCI Error ORA-00001: unique constraint (GGS_ADMIN.PK_EXCEPTIONS) violated (status = 1). INSERT INTO "GGS_ADMIN"."EXCEPTIONS" ("R
EP_NAME","TABLE_NAME","ERRNO","DBERRMSG","OPTYPE","ERRTYPE","LOGRBA","LOGPOSITION","COMMITTIMESTAMP") VALUES (:a0,:a1,:a2,:a3,:a4,:a5,:a6,:a7,:a8).
2012-08-30 09:09:00 WARNING OGG-01004 Aborted grouped transaction on 'GGS_ADMIN.EXCEPTIONS', Database error 1 (OCI Error ORA-00001: unique constraint (GGS_ADMIN.PK_EX
CEPTIONS) violated (status = 1). INSERT INTO "GGS_ADMIN"."EXCEPTIONS" ("REP_NAME","TABLE_NAME","ERRNO","DBERRMSG","OPTYPE","ERRTYPE","LOGRBA","LOGPOSITION","COMMITTIMES
TAMP") VALUES (:a0,:a1,:a2,:a3,:a4,:a5,:a6,:a7,:a8)).
2012-08-30 09:09:00 WARNING OGG-01003 Repositioning to rba 92383 in seqno 8.
2012-08-30 09:09:00 WARNING OGG-01154 SQL error 1403 mapping scr.order_items to scr.order_items OCI Error ORA-01403: no data found, SQL <DELETE FROM "scr"."order_items" WHERE "SUBSCRIBER_ID" = :b0>.
2012-08-30 09:09:00 WARNING OGG-01154 SQL error 1 mapping scr.order_items to GGS_ADMIN.EXCEPTIONS OCI Error ORA-00001: unique constraint (GGS_ADMIN.PK_EXCEPTIONS)
violated (status = 1). INSERT INTO "GGS_ADMIN"."EXCEPTIONS" ("REP_NAME","TABLE_NAME","ERRNO","DBERRMSG","OPTYPE","ERRTYPE","LOGRBA","LOGPOSITION","COMMITTIMESTAMP") VAL
UES (:a0,:a1,:a2,:a3,:a4,:a5,:a6,:a7,:a8).
2012-08-30 09:09:00 WARNING OGG-01003 Repositioning to rba 92383 in seqno 8.
When I am running command
select * from exceptions;
no row selected.
Please help. Why duplicat rows trying to insert in Exception table.

Remove (disable) the constraint on the exceptions table and see if inserts will take place. Do you really need that primary key?

Exception handling In File Adapter

My requirement is that i am reading a file using file adapter but the file is not in correct format so it is not reading that file and even not making any bpel instance.
so i need to add exception handling that show me the above error(file read failure).
we have log file in that it is showing this error but i need to show that error on BPEL console.
Please help how to proceed with this.
Thanks
Vivek Garg

I am able to call another bpel when error occured in file reading Bpel.
the second Bpel will handle the error and shows the error. but addition to that i need BPEL process name which fails(File Read BPEL) and call second BPEL.
Thanks
Vivek Garg

Best Practice for Implementing Exception Handling in BPEL

Hi All,
what is the best practice and the approach to follow Exception Handling in BPEL.
1) Do we need to implement Exception Handling in BPEL as we do in Java, means
     method 3 throws error to method 2 (if any) and
     method 2 throws error to method 1 (if any) and
     finally method 1 throws error to the main Class.
If we replicate the above scenario to BPEL
In BPEL main Scope have Custom Fault, Catch ALL
     Each Invoke is surrounded by a Scope Activity with Remote Fault, Binding Fault & Custom Fault
and follow the paradigm of Java, assuming we have Inner Scopes
     [ OR ]
2) In BPEL main Scope have all exceptions defined like
     Remote Fault,
     Binding Fault,
     anyOther System Fault (selectionFailure / forcedTermination),
     Custom Fault (if required) and
     CatchALL
     and also
     each Invoke is surrounded by a Scopes Acitivity with Custom Fault (business fault) exception Handling
I feel 1st one may not be a good practice, may be i am wrong...
Any Suggestions from experts.
Thanks in Advance
anvv sharma

Hi-
In you can create different scope and use catch branch to catch binding, remote, custom faults, business faults etc. If an error happens in a scope it will not move to the next scope( eg: you have 3 scope, error occured in 2nd scope then it will not propogate to the 3rd scope. One thing to be noticed here is your transaction in the 1st scope doesnt gets commited when an error happens in 2d scope).
You can have a catch all to catch error which are not being caught at catch level. So if any error happens which is not defined in catch block then then it will be caught in catch all branch.
Edited by: 333333 on Apr 12, 2011 9:39 AM

B2B Exception handling

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