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Totally separately activities, totally unrelated activities. JUST USE A SEQUENCE, period. CREATE OR REPLACE TRIGGER job_queue_bi BEFORE INSERT OR UPDATE OF job_name ON job_queue_t FOR EACH ROW declare count1 NUMBER; invalid_job_name EXCEPTION; begin SELECT count(1) INTO count1 FROM job_queue_t WHERE job_name = statment trigger June 30, 2005 - 8:33 pm UTC Reviewer: mohannad i create the following database trigger: create or replace trigger full222 after insert on emp declare i number(10); begin select

[email protected]> [email protected]> declare 2 l_sal number; 3 l_avg_sal number; 4 begin 5 for x in ( select * from emp ) 6 loop 7 update emp 8 set sal = sal in that trigger, called as PART OF THE PROCESSING of an insert statement, you are reading the table you are modifying. we are not talking about two uses accessing the same record. Thanks Reply Anonymous said February 8, 2013 at 1:52 pm Simply Awesome🙂 Reply Sreekanth said February 19, 2013 at 8:43 am By Using Autonomous Transaction and Statement level Trigger..

Ramana Followup August 14, 2007 - 10:35 am UTC do not do that, you do not need to update the table (we are not sqlserver!!) create trigger t before insert on Most mutating table errors are caused by bad logic or poor design, so assuming this is not the case for you and using autonomous transaction will not give you the results The table CUG can only have records of the following types A: Type = 1 B: Type = 2 (Leader for C or D) C: Type = 3 (Lead by B) I get the new information: January 05, 2004 - 4:13 am UTC Reviewer: Li ys from CHINA If I use 'Insert into table SELECT ...',The 4091 error will happen,if only insert

This restriction applies to all the row level triggers and hence we run into mutating table error. versioning rows October 09, 2007 - 7:01 pm UTC Reviewer: A reader Hi I have a requiremenet which is whenever a row is updated in table T1 the row which is anywhere... Many thanks for such a guidance.

In a multi-user situation, you won't see my insert -- I won't see yours, we generate the same number. First let us create a table and then trigger.
SQL> CREATE TABLE TEST
2  AS SELECT * FROM USER_OBJECTS; Table created. Steve Callan has these notes on the ORA-04091 error: "Here is a problem many developers run into: ORA-04091 table owner.table_name is mutating, trigger/function may not see it. May 17, 2005 - 9:12 am UTC Reviewer: Arun from Hyderabad, India Hi Tom, What exactly do you mean by 'unstable set of rows' seen by a trigger.

Followup January 05, 2004 - 7:32 am UTC thanks -- fixed the link. Not the answer you're looking for? 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 Here we get correct result without getting mutating table error.

Further Reading HunBug: Mutating Tables, a workaround which allows committed and uncommitted session data to be viewed. g_change_tab.last LOOP SELECT COUNT(*) INTO l_count FROM tab1; INSERT INTO tab1_audit (id, action, tab1_id, record_count, created_time) VALUES (tab1_audit_seq.NEXTVAL, g_change_tab(i).action, g_change_tab(i).id, l_count, SYSTIMESTAMP); END LOOP; g_change_tab.delete; END tab1_statement_change; END trigger_api; / SHOW Test Schema Mutating Table Demonstration Solution 1 (Collection in Package Variable) Solution 2 (Global Temporary Table) Test Schema The following schema objects are necessary to run the code in this article. You won't get 1, 2, 3, 4, 5, ....

We have covered compound triggers in a previous blog post. up vote 7 down vote favorite 1 I understand mutating table errors are caused by a design flaw or problematic query. Mutation work-around or CONNECT BYs directly in the queries? Example: Given the trees: 0 2 | / \ 1 3 6 / \ 4 5 we should have the edges (descendent -> ancestor): 0->0 1->0 2->2 3->3 3->2 4->4 4->3

What is the possible real world use case for something like this. Thanks a lot for your time and effort. asked 5 years ago viewed 39278 times active 1 year ago Linked 2 Copy a single record to a replica table before update using trigger (Oracle 12c) Related 1Error with Oracle For instance a delete was issued and the trigger gets fired.at the same time it also needs the count of the records in the table.

Tell you what -- you give me an example where you think it would be "safe" to read the table and what the trigger is to accomplish (what business rule it thanks alot Followup June 30, 2005 - 9:52 am UTC see above. share|improve this answer edited Sep 6 '11 at 16:46 answered Sep 6 '11 at 12:24 Leigh Riffel 18.4k1053127 add a comment| up vote 2 down vote Have a look at the CREATE OR REPLACE TRIGGER tab1_ariu_trg AFTER INSERT OR UPDATE ON tab1 FOR EACH ROW BEGIN IF inserting THEN trigger_api.tab1_row_change(p_id => :new.id, p_action => 'INSERT'); ELSE trigger_api.tab1_row_change(p_id => :new.id, p_action => 'UPDATE');

You didn't mention any database triggers at all. Why can't the default behaviour be that a trigger sees the data in an 'as is' condition, i.e. 1. We studied the "Mutating Table" Problem and found the following explanations in the Oracle8i Application Developer's Guide. The introduction of Compound Triggers in Oracle 11g Release 1 makes solving mutating table errors much simpler as a single trigger definition can perform most of the actions.

Very helpful! Only row triggers are subject to mutating table constraints, STATEMENT triggers (before/after) are not. Followup September 28, 2007 - 6:04 pm UTC you are missing a lock table, so no - it is not correct. (why would you bother to create a named exception, catch This allows most foreign key constraint actions to be implemented via their obvious after-row trigger, providing the constraint is not self-referential.

SQL> INSERT INTO tab1 (id, description) VALUES (tab1_seq.NEXTVAL, 'FOUR'); 1 row created. Thanks a lot Reply Anonymous said September 10, 2015 at 9:33 am What about the temporary table method ?? Let them commit.