Oracle Pl Sql Continue On Error
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CONTINUE statement exits a cursor FOR loop prematurely (for example, to exit pl/sql continue after exception an inner loop and transfer control to the next iteration
Pl Sql Exception Handling Examples
of an outer loop), the cursor closes (in this context, CONTINUE works like GOTO).
Whenever Sqlerror Continue
Note: As of Oracle Database 11g Release 1, CONTINUE is a PL/SQL keyword. If your program invokes a subprogram named CONTINUE, you get
Oracle Continue
a warning. Restrictions on CONTINUE Statement A CONTINUE statement must be inside a LOOP statement. A CONTINUE statement cannot cross a subprogram or method boundary. Topics Syntax Semantics Examples Related Topics Syntax continue_statement ::= Description of the illustration continue_statement.gif See "boolean_expression ::=". Semantics label Name that identifies either pl sql exception when others the current loop or an enclosing loop (see "Basic LOOP Statement"). Without label, the CONTINUE statement transfers control to the next iteration of the current loop. With label, the CONTINUE statement transfers control to the next iteration of the loop that label identifies. WHEN boolean_expression Without this clause, the CONTINUE statement exits the current iteration of the loop unconditionally. With this clause, the CONTINUE statement exits the current iteration of the loop if and only if the value of boolean_expression is TRUE. Examples Example 4-13, "CONTINUE Statement in Basic LOOP Statement" Example 4-14, "CONTINUE WHEN Statement in Basic LOOP Statement" Example 4-27, "CONTINUE WHEN Statement in Inner FOR LOOP Statement" Related Topics In this chapter: "Basic LOOP Statement" "Cursor FOR LOOP Statement" "EXIT Statement" "Expression" "FOR LOOP Statement" "WHILE LOOP Statement" In other chapters: "LOOP St
March 2011 Oracle Magazine Online 2016 2015 2014 2013 2012 2011 2010 January 2011 March 2011 May 2011 July 2011 September 2011 November 2011 As Published In March/April 2009 DEVELOPER: PL/SQL Practices On Avoiding Termination By Steven Feuerstein Continue PL/SQL execution beyond exceptions. I have oracle sqlerrm been assigned the job of modifying an existing procedure that applies a complex set of continue in oracle with example rules to a large volume of data in a set of tables. In the past, as soon as an error occurred in an update, exception_init the procedure would terminate execution. Now I need to change the procedure so that it continues past any exceptions and completes as many updates as possible. What are my options in PL/SQL for doing this? In Oracle Database https://docs.oracle.com/cloud/latest/db112/LNPLS/continue_statement.htm 10g and higher, PL/SQL offers three options for “continuing past an exception,”which really means avoiding termination of the execution of the current block. 1. The nested block. You enclose the lines of code that may raise the exception inside a BEGIN END nested block. Then add an exception section so that the error is trapped and handled. Then keep on going. 2. The FORALL SAVE EXCEPTIONS clause. Add SAVE EXCEPTIONS to a FORALL statement, and Oracle Database will http://www.oracle.com/technetwork/issue-archive/2011/11-mar/o29plsql-085126.html save any exceptions that are raised during the execution of individual insert, update, delete, or merge statements generated by the FORALL. FORALL SAVE EXCEPTIONS suppresses exceptions at the generated statement level, so if that statement’s change of a row raises an error, changes to other rows already completed by that generated statement are also rolled back. When the FORALL statement is completed, Oracle Database will then raise the ORA-21438 error if at least one exception was encountered. 3. Data manipulation language (DML) error logging. Use the DBMS_ERRLOG package and LOG ERRORS with any insert, update, delete, or merge statements (within or independent of FORALL) to suppress exceptions at the row level. If a statement’s change of one row raises an error, changes to other rows already made by that statement will not be rolled back and Oracle Database will continue to change any remaining rows identified by that statement. DBMS_ERRLOG and LOG ERRORS will then write error information out to an error log table. In this column, I take a look at each of these approaches and describe their strengths and weaknesses. In each case, I will implement the following logic: For each employee in a given department, increase that person’s salary by a specified percentage after applying any necessary adjustments. A database trigger places additional constraints on the salary, so any individual update for an employee might fail. If it does,
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://stackoverflow.com/questions/27566867/pl-sql-exception-handling-do-nothing-ignore-exception Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs http://stackoverflow.com/questions/323629/continue-on-error-in-loop Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up PL/SQL exception handling: do nothing (ignore exception) up vote 12 down vote favorite 1 This is a question I am asked very frequently. pl sql Since I couldn't find any exact duplicate on stackoverflow, I thought I'd post it as a reference. Question: In PL/SQL, I know how to catch exceptions and execute code when they are caught, and how to propagate them to the calling block. For example, in the following procedure, the NO_DATA_FOUND exception is handled directly, while all other exceptions are raised to the calling block: CREATE OR REPLACE PROCEDURE MY_PROCEDURE() IS BEGIN do_stuff(); EXCEPTION WHEN pl sql exception NO_DATA_FOUND THEN -- Do something handle_exception(); WHEN OTHERS THEN -- Propagate exception RAISE; END; But what command should I use to ignore one or all raised exceptions and return execution control back to the calling block? oracle exception plsql exception-handling share|improve this question asked Dec 19 '14 at 13:11 silentsurfer 6691318 add a comment| 1 Answer 1 active oldest votes up vote 21 down vote accepted While I agree that 99% of the time it is bad practice to silently ignore exceptions without at least logging them somewhere, there are specific situations where this is perfectly acceptable. In these situations, NULL is your friend: [...] EXCEPTION WHEN OTHERS THEN NULL; END; Two typical situations where ignoring exceptions might be desirable are: 1) Your code contains a statement which you know will fail occasionally and you don't want this fact to interrupt your program flow. In this case, you should enclose you statement in a nested block, as the following example shows: CREATE OR REPLACE PROCEDURE MY_PROCEDURE() IS l_empoyee_name EMPLOYEES.EMPLOYEE_NAME%TYPE; BEGIN -- Catch potential NO_DATA_FOUND exception and continue BEGIN SELECT EMPLOYEE_NAME INTO l_empoyee_name FROM EMPLOYEES WHERE EMPLOYEE_ID = 12345; EXCEPTION WHEN NO_DATA_FOUND THEN NULL; WHEN OTHERS THEN RAISE; END; do_stuff(); EXCEPTION WHEN OTHERS THEN -- Propagate exception RAISE; END; Note that PL/SQL generally does not allow for the On Error Resume Next ty
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Continue on error in loop up vote 1 down vote favorite The loop below is callign a proc that does various 'things' If it should throw an exception it also 'raises' it. I want to catch it and ignore it and allow the loop to continue processing the next value in the array. Thanks WHILE indx IS NOT NULL LOOP table_dump_csv(tableList(indx), tableList(indx) || '.csv'); indx := tableList.NEXT(indx); END LOOP; oracle plsql share|improve this question edited Nov 27 '08 at 12:39 toolkit 34.9k1179123 asked Nov 27 '08 at 12:37 Robert 1,19931829 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted One possible approach... WHILE indx IS NOT NULL LOOP BEGIN table_dump_csv(tableList(indx), tableList(indx) || '.csv'); EXCEPTION WHEN OTHERS THEN -- Handle/Ignore the exception as appropriate END; indx := tableList.NEXT(indx); END LOOP; Alternatively you could change the procedure into a function which returns a success/failure code. share|improve this answer answered Nov 27 '08 at 12:41 cagcowboy 18.7k65681 1 Additionally, if you want to ignore and have no program logic (e.g logging) then you'll need to add "NULL;" to the exception handler in order to get it to compile. –darreljnz Nov 28 '08 at 3:30 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Passwor