Ora 4091 Mutating Table Error
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Mutating Trigger In Oracle 11g
IN INSERT INSERT ALL INTERSECT IS NOT NULL IS NULL JOIN LIKE MINUS NOT OR ORDER BY PIVOT REGEXP_LIKE SELECT ora-04091 solution SUBQUERY TRUNCATE UNION UNION ALL UPDATE WHERE Oracle Advanced Oracle Cursors Oracle Exception Handling Oracle Foreign Keys Oracle Loops/Conditionals Oracle Transactions Oracle Triggers String/Char Functions Numeric/Math Functions Date/Time Functions Conversion Functions Analytic Functions oracle mutating trigger pragma autonomous transaction Advanced Functions Oracle / PLSQL: ORA-04091 Error Message Learn the cause and how to resolve the ORA-04091 error message in Oracle. Description When you encounter an ORA-04091 error, the following error message will appear: ORA-04091: table name is mutating, trigger/function may not see it Cause A statement executed a trigger or custom PL/SQL function. That trigger/function tried to modify or query a table that is
Mutating Trigger With Example
currently being modified by the statement that fired the trigger/function. Resolution The option(s) to resolve this Oracle error are: Option #1 Re-write the trigger/function so that it does not try to modify/query the table in question. For example, if you've created a trigger against the table called orders and then the trigger performed a SELECT against the orders table as follows: CREATE OR REPLACE TRIGGER orders_after_insert AFTER INSERT ON orders FOR EACH ROW DECLARE v_quantity number; BEGIN SELECT quantity INTO v_quantity FROM orders WHERE order_id = 1; END; You would receive an error message as follows: When you create a trigger against a table, you can't modify/query that table until the trigger/function has completed. Remember that you can always use the :NEW and :OLD values within the trigger, depending on the type of trigger. Learn more about Triggers. Share this page: Advertisement Back to top Home | About Us | Contact Us | Testimonials | Donate While using this site, you agree to have read and accepted our Terms of Service and Privacy Policy. We use advertisements to support this website and fund the development of new content. Copyright © 2003-2016 TechOnTheNet.com. All rights reserved.
- 8:40 pm UTC Category: SQL*Plus � Version: 8.1.7 Whilst you are here, check out some content from the AskTom team: When do you have to CREATE a TYPE? Latest Followup You oracle statement level trigger Asked hello, i've got a table MRC and a trigger on it (AFTER pragma autonomous_transaction trigger INSERT) thus, after an insert in the table MRC, this trigger has to determine if a new line must be
Oracle Instead Of Trigger
inserted into an other table PLAN : for that, it does compare the :new values with the MOST RECENT enregistrement of MRC but i got a mutating table error i understand the https://www.techonthenet.com/oracle/errors/ora04091.php problem but how can i get over ?? thanks Arnaud and we said... My personal opinion -- when I hit a mutating table error, I've got a serious fatal flaw in my logic. Have you considered the multi-user implications in your logic? Two people inserting at the same time (about the same time). What happens then??? Neither will see eachothers work, neither will block -- both https://asktom.oracle.com/pls/apex/f?p=100:11:0%3A%3A%3A%3AP11_QUESTION_ID:9579487119866 will think "ah hah, I am first"... anyway, you can do too much work in triggers, this may well be that time -- there is nothing wrong with doing things in a more straightforward fashion (eg: using a stored procedure to implement your transaction) but if you persist, you can use the technique: http://asktom.oracle.com/~tkyte/Mutate/index.html to avoid the mutating table constraint -- but I would avoid the situation that gets me there in the first place. The logic is a whole lot more understandable that way (and maintainable and testable and everything) Reviews Write a Review Ora-4091 May 05, 2003 - 5:45 pm UTC Reviewer: A reader We create trigger in the test server (8i) its working without error, and when we created at life (8) we get the following error: ORA-04091: table XXXX is mutating, trigger/function may not see it. Followup May 05, 2003 - 8:31 pm UTC they relaxed some of the constraining rules between 8.0 and 8.1 -- things are in general upwards (develop in 8.0 and goto 8.1) compatible but not backwards. Why I can't get the 4091 error when insert? January 05, 2004 - 3:39 am UTC Rev
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RESOURCES Database Tools SQL Scripts & Samples Links » Database Forum » Slideshows » Sitemap Free Newsletters: DatabaseDaily News Via RSS Feed Database Journal |DBA Support |SQLCourse |SQLCourse2 Featured Database Articles Oracle Posted Mar 23, 2004 The Mutation error in Oracle Database Triggers By Amar Kumar Padhi The Mutating table error is a well-known problem encountered in development; most developers have come across this error. ORA-04091: table