Ora 04091 Error
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Ora-04091 Solution
Clipart Techie Humor Advertisement Oracle Basics ALIASES AND AND & OR mutating trigger in oracle 10g with example BETWEEN COMPARISON OPERATORS DELETE DISTINCT EXISTS FROM GROUP BY HAVING IN INSERT INSERT ALL INTERSECT IS NOT ora-04091 after insert trigger NULL IS NULL JOIN LIKE MINUS NOT OR ORDER BY PIVOT REGEXP_LIKE SELECT SUBQUERY TRUNCATE UNION UNION ALL UPDATE WHERE Oracle Advanced Oracle Cursors Oracle Exception Handling Oracle
Oracle Statement Level Trigger
Foreign Keys Oracle Loops/Conditionals Oracle Transactions Oracle Triggers String/Char Functions Numeric/Math Functions Date/Time Functions Conversion Functions Analytic Functions 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,
Pragma Autonomous_transaction Trigger
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 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 Bac
- 8:40 pm UTC Category: SQL*Plus � Version: 8.1.7 Whilst you are here, check out some content from the AskTom team: On Ignoring, Locking, and Parsing Latest Followup You Asked hello, i've got a table MRC and a trigger on it (AFTER INSERT) thus, after an insert in mutating trigger in oracle 11g the table MRC, this trigger has to determine if a new line must be inserted into
Oracle Instead Of Trigger
an other table PLAN : for that, it does compare the :new values with the MOST RECENT enregistrement of MRC but i got a mutating oracle mutating trigger pragma autonomous transaction table error i understand the 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 https://www.techonthenet.com/oracle/errors/ora04091.php 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 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 https://asktom.oracle.com/pls/apex/f?p=100:11:0%3A%3A%3A%3AP11_QUESTION_ID:9579487119866 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 Reviewer: Li ys from CHINA I only want to prove the mutating table by this triggers: CREATE TABLE r_Module ( Bureauno NUMBER(3), Moduleno NUMBER(3), primary key ( Bureauno, Moduleno ) ); CREATE OR REPLACE TRIGGER LimitTest BEFORE INSERT OR UPDATE ON r_Module FOR EACH ROW DECLARE v_MaxModuleNum CONSTANT NUMBER := 5; v_CurModuleNum NUMBER; BEGIN SELECT COUNT(*) INTO v_CurModuleNum FROM r_Module WHERE Bureauno = :new.Bureauno; IF v_CurModuleNum + 1 > v_MaxModuleNum THEN RAISE_APPLICATION_ERROR(-20000,'Too many Module in the Bureauno:'||:new.Bureauno); END IF; END; / When I insert some record into r_module table,I can't get the 4091 error,but when I update one, th
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 http://stackoverflow.com/questions/6915325/oracle-after-update-trigger-solving-ora-04091-mutating-table-error 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 https://decipherinfosys.wordpress.com/2009/06/22/mutating-tabletrigger-error-and-how-to-resolve-it/ a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up ORACLE After update trigger: solving ORA-04091 mutating table error up vote 2 down vote mutating trigger favorite I am trying to create a trigger: create or replace trigger NAME_OF_TRIGGER after insert or update on table1 REFERENCING OLD AS OLD NEW AS NEW for each row to fill in automatically a couple of non obligatory fields when updating/inserting on a table. This requires me to use a cursor that selects from table2 and also table1 (the subject of the trigger). Is there any way to avoid the mutating trigger in mutating table error without using a temporary table for values or an autonomous transaction? sql oracle plsql triggers mutating-table share|improve this question edited Aug 2 '11 at 16:54 APC 87.3k1384184 asked Aug 2 '11 at 16:26 JoséNunoFerreira 150111 add a comment| 1 Answer 1 active oldest votes up vote 7 down vote accepted "Is there any way to avoid the mutating table error without using a temporary table for values or an autonomous transaction?" tl;dr no. The mutating table error is caused by querying the table which owns the trigger, or tables which are involved in a foreign key relationship with the owning table (at least in older versions of the database, not sure whether it still obtains). In a properly designed application this should not be necessary. This is why many people regard mutating tables as an indicator of poor data modelling. For instance, mutation is often associated with insufficient normalisation. To paraphrase Jamie Zawinski: Some people, when confronted with a mutating table exception, think "I know, I'll use autonomous transactions." Now they have two problems. Sometimes the error can be avoided by simply modifying the :NEW values in a BEFORE INSERT OR UPDATE trigger or by using virtual columns. But you'll need to post more deta
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