Pl Sql Error Handling Loop
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Pl Sql Exception Handling Continue Loop
or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x oracle exception handling in loop 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 pl sql continue only takes a minute: Sign up Is it possible to CONTINUE a loop from an exception? up vote 13 down vote favorite 4 I have a fetch being executed inside of a loop. If this fetch fails (no data) I
Oracle Ignore Exception And Continue
would like to CONTINUE the loop to the next record from within the EXCEPTION. Is this possible? I'm getting a ORA-06550 & PLS-00201 identifer CONTINUE must be declared DECLARE v_attr char(88); CURSOR SELECT_USERS IS SELECT id FROM USER_TABLE WHERE USERTYPE = 'X'; BEGIN FOR user_rec IN SELECT_USERS LOOP BEGIN SELECT attr INTO v_attr FROM ATTRIBUTE_TABLE WHERE user_id = user_rec.id; EXCEPTION WHEN NO_DATA_FOUND THEN -- user does not have attribute, continue loop to next record. CONTINUE; END; END LOOP; END; oracle
Continue Statement In Oracle 10g
plsql share|improve this question edited May 5 '11 at 20:33 asked May 5 '11 at 19:23 ProfessionalAmateur 1,83972349 The CONTINUE statement is a new feature in 11g. Are you sure you are running that version? –angus May 5 '11 at 20:08 By the way, see here: stackoverflow.com/questions/177752/… –angus May 5 '11 at 20:09 @angus - We are on 10g, bummer. Guess I'll just use a NULL; and a bunch of conditional IF statements to help with the loop. Post your answer as a reply and I'll mark it as the correct answer. –ProfessionalAmateur May 5 '11 at 20:16 Done, thanks. Look at that other question, maybe you can just use GOTO. –angus May 5 '11 at 20:21 2 A simpler solution would be to loop through a query that joins the two tables - then you wouldn't have to handle any exceptions. –Adam Musch May 6 '11 at 5:27 add a comment| 3 Answers 3 active oldest votes up vote 11 down vote accepted The CONTINUE statement is a new feature in 11g. Here is a related question: 'CONTINUE' keyword in Oracle 10g PL/SQL share|improve this answer answered May 5 '11 at 20:20 angus 1,83111020 add a comment| up vote 9 down vote In the construct you have provided, you don't need a CONTINUE. Once the exception is handled, the statement after the END is performed, assuming your EXCEPTIO
Churchill Run-time errors arise from design faults, coding mistakes, hardware failures, and many other sources. Although you cannot anticipate all possible errors, you can plan to handle certain kinds of errors meaningful to your continue in oracle with example PL/SQL program. With many programming languages, unless you disable error checking, a run-time error
Pl Sql Exception Handling Best Practices
such as stack overflow or division by zero stops normal processing and returns control to the operating system. With PL/SQL, a mechanism cursor for loop no data found oracle called exception handling lets you "bulletproof" your program so that it can continue operating in the presence of errors. This chapter discusses the following topics: Overview of PL/SQL Error Handling Advantages of PL/SQL Exceptions Predefined http://stackoverflow.com/questions/5903027/is-it-possible-to-continue-a-loop-from-an-exception PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Tips for Handling PL/SQL Errors Overview of PL/SQL Error Handling In PL/SQL, a warning or error condition is called an exception. Exceptions can be internally defined (by the run-time system) or user defined. Examples of internally defined exceptions include division by zero and out of memory. Some common https://docs.oracle.com/cd/A97630_01/appdev.920/a96624/07_errs.htm internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Unlike internal exceptions, user-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. In the example below, you calculate and store a price-to-earnings ratio for a company with ticker symbol XYZ. If the company has zero earnings, the predefined exception ZERO_DIVIDE is raised. This stops normal execution of the block and transfers control to the exception handlers. The optional OTHERS handler catches all exceptions that the block does not name specifically. DECLARE p
be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click http://www.dbforums.com/showthread.php?1663777-PL-SQL-FOR-Loop-Exception-handling the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Page 1 of 2 12 Last Jump http://psoug.org/reference/exception_handling.html to page: Results 1 to 15 of 23 Thread: PL/SQL 'FOR' Loop Exception handling Tweet Thread Tools Show Printable Version Subscribe to this Thread… Search Thread Advanced Search pl sql Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 01-19-11,16:23 #1 db_newbie View Profile View Forum Posts Registered User Join Date Nov 2010 Posts 30 Unanswered: PL/SQL 'FOR' Loop Exception handling Hello there, I'm trying to put an exception handling code in the following loop but I really don't know how to. Code: BEGIN FOR i IN(SELECT pl sql exception * FROM emp WHERE ename LIKE UPPER('&input%')) LOOP IF i.commission IS NULL OR i.commission = 0 THEN DBMS_OUTPUT.PUT_LINE(i.ename||' does not earn commission.'); ELSE DBMS_OUTPUT.PUT_LINE(i.ename||' earns commission.'); END IF; END LOOP; END; / I've been fiddling around with it but can't seem to get it working Code: BEGIN FOR i IN(SELECT * FROM emp WHERE ename LIKE UPPER('&input%')) LOOP IF i.commission IS NULL OR i.commission = 0 THEN DBMS_OUTPUT.PUT_LINE(i.ename||' does not earn commission.'); EXCEPTION ELSIF WHEN NO_DATA_FOUND THEN DBMS_OUTPUT.PUT_LINE('No data round. Please try again'); ELSE DBMS_OUTPUT.PUT_LINE(i.ename||' earns commission.'); END IF; END LOOP; END; / Can anybody please help me out? Thank you very much. Regards, db_newbie Reply With Quote 01-19-11,18:05 #2 anacedent View Profile View Forum Posts Registered User Join Date Aug 2003 Location Where the Surf Meets the Turf @Del Mar, CA Posts 7,776 Provided Answers: 1 when all else fails, Read The Fine Manual Overview of PL/SQL You can lead some folks to knowledge, but you can not make them think. The average person thinks he's above average! For most folks, the
Functions PSOUG Forum Oracle Blogs Search the Reference Library pages: FreeOracle MagazineSubscriptionsand Oracle White Papers Oracle Exception Handling Version 11.1 General NOTE: How Oracle Does Implicit Rollbacks Before executing an INSERT, UPDATE, or DELETE statement, Oracle marks an implicit savepoint (unavailable to you). If the statement fails, Oracle rolls back to the savepoint. Normally, just the failed SQL statement is rolled back, not the whole transaction. However, if the statement raises an unhandled exception, the host environment determines what is rolled back. If you exit a stored subprogram with an unhandled exception, PL/SQL does not assign values to OUT parameters. Also, PL/SQL does not roll back database work done by the subprogram. At the level of the SQL*Plus prompt, every update/insert/delete has one implicit savepoint, and also the invocation of any unnamed block. Below that, the unnamed block itself has 'sub' savepoints - one foreach insert/update/delete statement in it, and one for each subprogram unit. And so on down the line. If an error occurs, and that error is handled at any level by the time we're back at the SQL*Plus prompt, we only rollback to the immediate savepoint at the start of the update/insert/delete that errors. Otherwise we rollback to the top-level 'virtual' savepoint currently in existence, which is my offending unnamed block. That is, a handled error is handled and so can be dealt with without rolling back all the way to the top. It is handled and the transaction proceeds. Commits define the end of a transaction (and start of a new one) - rollbacks only define the end of a transaction if they rollback to the last commit, rather than savepoint (whether explicit or implicit). I came to my 'version' from the following by no means exhaustive tests: CASE 1: I created a table a with one column, a1 number, and at the sqlplus prompt inserted a row with a1 = 1. I then ran that unnamed block I referred in an earlier post that, without an exception handler, does the following: INSERT INTO a VALUES (2); INSERT INTO a VALUES (3); INSERT INTO a VALUES ('a'); As expected I get an unhandled error on the last line. When I do a select for everything in the table a, I get the first row I inserted 'manually', the one with a1 = 1. So there seems to have been an invisible savepoint set just before the unnamed block ran. CASE 2: Then I modified the unnamed block so it did two good inserts and then called a stored procedure that did two good inserts and ended with one 'bad' - inserting a character into a number column. The stored procedure also had no error trap. When I run