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Unique Constraint Error Merge Statement Oracle

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Now let's repeat this exercise using an ID value for a row that does not exist in the table: MERGE INTO merge_test dest USING (SELECT 20 AS id , 20 AS Thanks for the explanation and your quick responses are appreciated. Not the answer you're looking for? Login. have a peek here

Oracle then blocks session 2 as it detects a uniqueness conflict with the row that session 1 is inserting. Many thanks! They clearly say: your SQL statement never fails unless constraints are violated at the end of the transaction execution.. What is wrong?

Oracle Merge Distinct

HTH Regards Raj Report message to a moderator Re: MERGE statement and primary key constraint violation [message #301715 is a reply to message #301711] Thu, 21 February 2008 If an unique index is equivalent to nondeferrable unique constraint, then OK, but that doesn’t seem to always be the case: foreign keys can only be created on unique constraints, not SQL> SQL> insert into stab values (1,'New name of Ram',501); <----- Name value is more than 10 char ******* 1 row created. Regards Michel Report message to a moderator Re: MERGE statement and primary key constraint violation [message #301724 is a reply to message #301711] Thu, 21 February 2008 08:07

The answer that you gave very clearly answered all of my questions. The solution to this problem is to simply remove the MERGE and replace it with an INSERT/UPDATE combination: BEGIN INSERT INTO merge_test (id, val) VALUES (20, 20); EXCEPTION WHEN DUP_VAL_ON_INDEX THEN This is a very powerful feature in Oracle and there arehundereds of articles on-line about this. select count(field1) from source_table; select count(distinct field1) from source_table; Regards Raj P.S : As @Michael rightly pointed out why distinct if field1 is unique. [Updated on: Thu, 21 February 2008 08:11]Report

That is, given the same set of input data - we could come up with different "answers" depending on how the rows were accidentally processed. TABLE: ORDER_LOCK Name Null Type ---------------------- -------- ---------- ORDER_ID NOT NULL NUMBER(10) [PRIMARY KEY] ORDER_REF_ID NUMBER(10) [UNIQUE KEY] ORDER_MSG_SENT NUMBER(1) merge into ORDER_LOCK al using ( select ? Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are http://stackoverflow.com/questions/27398276/merge-statement-unique-index-constraint-validation-per-row-or-per-statement Curious given the code had been running in production for 6 months… The line number for the PL/SQL package that had thrown the exception showed that it came from a MERGE

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Get 1:1 Help Now Advertise Here Enjoyed your answer? Many users experience ORA-00001. Simple description of Consistent Read is When a (reading) query starts, it is important that the values of the rows selected are the same as when the query started, even if

  1. Regards Wolfgang and we said...
  2. sql> CREATE OR REPLACE TRIGGER t_trg 2 AFTER INSERT 3 ON t 4 DECLARE 5 my_exception EXCEPTION; 6 BEGIN 7 NULL; 8 RAISE my_exception; 9 EXCEPTION 10 WHEN my_exception 11 THEN
  3. In the post I used a MERGE of just a single row so that would work well.
  4. ORDER_MSG_SENT from dual ) t on (al.ORDER_REF_ID = t.ORDER_REF_ID) when not matched then insert (ORDER_ID, ORDER_REF_ID, ORDER_MSG_SENT) values (ORDER_LOCK_SEQ.nextval, t.ORDER_REF_ID, t.ORDER_MSG_SENT) I am using the above Merge from my applications (Java).

Oracle Merge Statement

This is explained with examples here: Database Concepts - 5. https://markhoxey.wordpress.com/2015/04/15/ora-00001-unique-key-violated-with-merge/ ORA_ERR_NUMBER$ --------------- ORA_ERR_MESG$ ---------------------------------------------------------- ---------------------------------------------------- R# ---------- 2290 ORA-02290: check constraint (CIDWWRITE.ORA-00001) violated 2 2290 ORA-02290: check constraint (CIDWWRITE.ORA-00001) violated 3 2290 ORA-02290: check constraint (CIDWWRITE.ORA-00001) violated 4 2290 ORA-02290: check Oracle Merge Distinct Ask Tom Sign In QuestionsArchivesPopularHotResourcesAbout QuestionsMERGE/UPDATE LOG ERRORS and Unique Constraints Breadcrumb Question and Answer Thanks for the question, Wolfgang. Ora 00001 Unique Constraint Violated While Inserting Here, it is explained that using a trigger method might help avoid ORA-00001 in that it does not allow duplicate primary keys.

Suppose, Session1 found that A and D fit the session's criteria, so it forms the edge A-D. navigate here Why cast an A-lister for Groot? Create a free website or blog at WordPress.com. %d bloggers like this: The Systems People Inc. cmis_client_revenue_tmp ----------------------------------- client_id,client_name,month,year,revenue 100, 'ABCD', 1/31/2007 10000 100,' 'ABCD', 1/31/2007 5000 In my actual table it should be like this 100 'ABCD' 1/31/2007 15000 If you need any more details,i can

sql>> INSERT INTO t 2 SELECT ROWNUM, 'Test DML' 3 FROM DUAL 4 CONNECT BY LEVEL <= 10 5 LOG ERRORS INTO err$_t REJECT LIMIT UNLIMITED; 10 rows created. SQL> INSERT INTO t 2 SELECT ROWNUM, 'Test DML' 3 FROM DUAL 4 CONNECT BY LEVEL <= 10; 10 rows created. But, I still don't understand why same row is getting inserted twice when XYZ NEWS don't exist in movies table. 0 LVL 9 Overall: Level 9 Oracle Database 9 Message Check This Out Someone decides they need to have a record with ID = 10, and so they insert using insert into table (id) values (10).

Report message to a moderator Re: MERGE statement and primary key constraint violation [message #301739 is a reply to message #301738] Thu, 21 February 2008 08:40 Michel Cadot If two topological spaces have the same topological properties, are they homeomorphic? Regards Mark Reply ↓ stewashton on July 26, 2016 at 8:52 pm said: Why not just handle the exception after the MERGE statement?

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Join Now For immediate help use Live now! SQL>select * from movies; MOVIE_NAME SHOWTIME ------------------------------ ----------- GONE WITH THE WIND 8:00 PM ABC Indexes are maintained during execution and for unique indexes the rowid is not considered "part of the key". This statement is a convenient way to combine multiple operations.

It is a production environment, so I can not remove the clause indefinitely. –davor Mar 18 '15 at 12:26 The first ACID property of a transaction is Atomicity. Report message to a moderator Re: MERGE statement and primary key constraint violation [message #301714 is a reply to message #301711] Thu, 21 February 2008 07:53 S.Rajaram Messages: See my ignore_row_on_dupkey_index tips. this contact form If you find an error or have a suggestion for improving our content, we would appreciate your feedback.

CASE #2: ERROR at line 1: ORA-00001: unique constraint (scott.SYS_C001718695) violated CASE #3: 1 row created.