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Oracle Merge Statement
Session 1 commit; Session 2 SQL> insert into t1 2 select level l from dual connect by level <= 7; insert into t1 * ERROR at line 1: ORA-00001: unique constraint Regards Michel Report message to a moderator Re: MERGE statement and primary key constraint violation [message #301740 is a reply to message #301737] Thu, 21 February 2008 08:44 Hot Network Questions Why does removing Iceweasel nuke GNOME? You can use the merge to insert if it suites your needs. his comment is here
Minimum of a function on an open interval What is way to eat rice with hands in front of westerners such that it doesn't appear to be yucky? Therefore, it becomes: -- this is existing source table create table source_table as select level L from dual connect by level <= 10; --Session 1 SELECT * FROM source_table WHERE L October 11, 2012 - 6:53 pm UTC Reviewer: suzanne weiss from Portland OR We have a third party file that we've processed with a MERGE in the past. Session 2 will block, since it is waiting for the lock held by Session 1): 3) Session 1 commits => Session 2 now tries to perform the insert, which will raise
Oracle Merge Statement
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- One day we might insert "row A" and then update it with "row B" Next day we might insert "row B" and then update it with "row A" same inputs exactly,
- I also updated my question (edit3). –davor Mar 20 '15 at 16:54 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google
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- sql> set serveroutput on sql> INSERT INTO t 2 SELECT 11, 'Test DML after Statement Trigger' 3 FROM DUAL 4 LOG ERRORS INTO err$_t REJECT LIMIT UNLIMITED; In My_exception LOG ERRORS
- Note that constraints are only part of the question.
- You can remove them from input files.
when I execute the same merge command: I get ORA-00001: unique constraint which makes sense because of the primary key. I'll look into it. So I wonder why the error is logged in the first place. so, - AQ?
Feel free to ask questions on our Oracle forum. Ora 00001 Unique Constraint Violated While Inserting I have MERGE statements running for several tens of hours with LOG ERRORS INTO clause. cmis_client_revenue_tmp ----------------------------------- client_id,client_name,month,year,revenue 100, 'ABCD', 1/31/2007 10000 100,' 'ABCD', 1/31/2007 5000 In my actual table it should be like this 100 'ABCD' 1/31/2007 15000 If you need any more details,i can ORA_ERR_NUMBER$ --------------- 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
So I am finding the scope of tables in Merge and Insert are inconsistent inside LOG ERRORS clause. The most sensible thing to do if your MERGE encounters an ORA-00001 is a ROLLBACK and re-trying the operation - if the first session has committed in the meantime, the second This is explained with examples here: Database Concepts - 5. Senior MemberAccount Moderator No, it means you (your data) have to satisfy the constraints that are in your model (and implemented in Oracle) and this is true with any SQL statement
Ora 00001 Unique Constraint Violated While Inserting
The expectationwas based"row-by-row" thought process. SQL>select * from movies; MOVIE_NAME SHOWTIME ------------------------------ ----------- GONE WITH THE WIND 8:00 PM ABC Oracle Merge Statement But I find it difficult to understand how the same applies to indexes. What is the underlying process here?
The insert which the Merge statement is doing is conditional, i.e. this content Thanks. 0 LVL 9 Overall: Level 9 Oracle Database 9 Message Expert Comment by:neo94142006-06-25 the merge statement is comparing all the rows in movies table to find matching and not Consider the following scenario: 1) Session 1 executes this MERGE statement (without committing it): merge into ORDER_LOCK al using ( select 1 ORDER_REF_ID, sysdate ORDER_MSG_SENT from dual ) t on (al.ORDER_REF_ID Some unique constraint errors (based on unique indexes) are logged far before the statement finishes upserting (among others, I see the sequence going up), and I do not know why (although
Can someone please tell me why Oracle is returning ora-0001 unique constraint error when I execute below code using merge command merge into movies M1 using movies m2 on (m2.movie_name = This is how it will work and is supposed to work. The most recent file had duplicate entries. http://fullflash.net/unique-constraint/unique-constraint-violated-oracle.html ops$tkyte%ORA11GR1> merge into dtab d 2 using stab s 3 on (s.id=d.id-0.1) 4 when not matched then 5 insert (id,name) values (s.id,s.name) 6 log errors into errlogtab('MigKey='||to_char(s.migkey)) reject limit unlimited; 0
I'll explain this experience with simplified example. Suggested Solutions Title # Comments Views Activity Left Justify field in Oracle 6 54 45d apply oracle patches on windows error 2 33 38d Oracle SQL Select Statement 19 46 26d November 27, 2009 - 10:28 am UTC Reviewer: Kuldeep from India 1 row created.
while the second session, attempting to obtain a lock on the same row, is blocked.
Also, an unique function based index has no unique constraint equivalent. If XYZ NEWS data does not exist in the movies table then why ora-0001 is occuring? Asked: September 17, 2008 - 3:15 pm UTC Answered by: Tom Kyte � Last updated: September 22, 2008 - 4:58 pm UTC Category: Database � Version: 10.2.0.3 Whilst you are here, sql>> INSERT INTO t 2 SELECT ROWNUM, 'Test DML' 3 FROM DUAL 4 CONNECT BY LEVEL <= 10 5 LOG ERRORS INTO err$_t REJECT LIMIT UNLIMITED; 10 rows created.
Here is the scenario presented by Sam Stephens: Lets say you have one row in your table, with ID = 1. Thanks again Followup October 26, 2009 - 2:13 pm UTC http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_9014.htm#SQLRF20000 see "Restrictions on DML Error Logging" Link broken October 08, 2009 - 1:00 pm UTC Reviewer: Ted from Philly Tom, In long: but there is a ton of stuff going on under the covers to make it so we can actually update millions of records - so the checking is not check over here so if there is 2 row already inserted, it will insert 2 row.
LOG ERRORS works... now if you tried your merge statement it will add 3 rows. I can insert this record from the ERROR table into main table without causing unique constraint failure. 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:
the question was "why" This was very useful - Thank you. Aug 23 '07 #2 reply Expert 5K+ P: 8,127 debasisdas If there is no primary key there must be an Unique constraint and that is getting violated by the merge. Oracle Database MS SQL Server Using the Oracle Datapump Export and Import Utilities Video by: Steve This video shows how to Export data from an Oracle database using the Datapump Export