Error In Materialized View Refresh Path Unique Constraint
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and unique constraints/indexes Posted on August 25, 2011 by dnikiforov There is well-known issue with the ability of MV-based replication to keep referencial integrity constraints ora-12008 error in materialized view refresh path ora-00001 unique constraint on the replication side. Oracle provides such mechanisms as refresh groups, atomic
Error In Materialized View Refresh Path Too Many Values
transaction refersh and deferred constraints to support referenctial integrity. But apart from this issue there is another one error in materialized view refresh path oracle what is related to how replication mechanisms treat changes in the master table. If we switch on tracing event 10046 and perform DBMS_MVIEW.REFRESH for a single on prebuilt table
Ora-12008 Error In Materialized View Refresh Path Ora-01555
fast refreshable MV based on primary key, we can see something like below (generic code): SELECT DISTINCT LOG$.{PK COLUMN} FROM (SELECT MLOG$.{PK COLUMN} FROM {MVIEW_LOG} MLOG$ WHERE "SNAPTIME$$" > :1 AND ("DMLTYPE$$" != 'I')) LOG$ WHERE (LOG$.{PK COLUMN}) NOT IN (SELECT MAS_TAB$.{PK COLUMN} FROM "MAS_TAB$" WHERE LOG$.{PK COLUMN} = MAS_TAB$.{PK COLUMN}) DELETE FROM {PREBUILD TABLE} SNAP$ WHERE "X" = ora-12008 error in materialized view refresh path ora-01031 insufficient privileges :1 SELECT CURRENT$.{COLUMN LIST} FROM (SELECT {COLUMN LIST} FROM {MASTER TABLE}) CURRENT$, (SELECT DISTINCT MLOG$.{PK COLUMN} FROM {MV LOG} MLOG$ WHERE "SNAPTIME$$" > :1 AND ("DMLTYPE$$" != 'D')) LOG$ WHERE CURRENT$.{PK COLUMN} = LOG$.{PK COLUMN} UPDATE {PREBUILD TABLE} SET {COLUMNS...} = {VALUES...} WHERE {PK COLUMN} = :1 INSERT INTO (COLUMN LIST) VALUES (VALUES LIST) As we can see this pseudo-code selects promary key values of rows what are related to DELETE operation (DMLTYPE$$ != ‘I'), checks what these rows don't exist and deletes them (in batch or row-by-row but using single-row operator DELETE). The next part of the code selects values what are related to "inserted" rows (we should take into account UPDATE operation is treated as DELETE+INSERT). To differ UPDATE and INSERT the code seems is trying to UPDATE row with specific primary key. If affected row does not exist the code insertes new row. It's essential to notice what refresh mechanism breaks down changes to separate SQL operators event the original statement changing master table was a single multi-row operator. This behaviour leads t
constraint violated [message #338089] Sun, 03 August 2008 06:06 babuknb Messages: 1734Registered: December 2005 Location: NJ Senior Member Hello, I got this error message in my replication environment. ORA-12012: error on auto execute of job 2182370 ORA-12008:
Ora-12008 Error In Materialized View Refresh Path Ora-00942 Table Or View Does Not Exist
error in materialized view refresh path ORA-00001: unique constraint (TE.S_TE_MTH_DBASE_SALES_INFO_A_U1) violated ORA-06512: at
Ora-12008 Error In Materialized View Refresh Path Ora-08103 Object No Longer Exists
"SYS.DBMS_SNAPSHOT", line 189 Materialized view and Base table having only one unique index. There are no referable constraints in my ora-12008 error in materialized view refresh path ora-01555 snapshot too old base table. Because source table not refer any other tables. Even; materialized view log created using rowid because there are no primary key constraints in my base table. When I manually refresh materialized view https://dnikiforov.wordpress.com/2011/08/25/materialized-view-and-unique-constraints/ I got the below error message ORA-00001: unique constraint (TE.S_TE_MTH_DBASE_SALES_INFO_A_U1) violated How it's possible? Because there is parent/child relationship in my source table and there is no way to enter duplicate records it's unique index. Please let me know why occurs this error? Babu [Updated on: Sun, 03 August 2008 06:07]Report message to a moderator Re: ORA-00001: unique constraint violated [message #338093 is a http://www.orafaq.com/forum/t/122816/ reply to message #338089] Sun, 03 August 2008 08:25 Michel Cadot Messages: 63863Registered: March 2007 Location: Nanterre, France, http://... Senior MemberAccount Moderator Search the root of the error then you'll get the reason why it happens. Regards Michel Report message to a moderator Re: ORA-00001: unique constraint violated [message #338704 is a reply to message #338093] Tue, 05 August 2008 13:51 babuknb Messages: 1734Registered: December 2005 Location: NJ Senior Member Hello Mr.Michel, Thanks for your support and sorry for my late response. I am sure; there is no root errors. Can you explain me why its happen? Thanks & Regards Babu Report message to a moderator Re: ORA-00001: unique constraint violated [message #338708 is a reply to message #338704] Tue, 05 August 2008 14:15 Michel Cadot Messages: 63863Registered: March 2007 Location: Nanterre, France, http://... Senior MemberAccount Moderator Yes there is a root error as you have duplicates they don't appear by miracle. Search why you have duplicates. Search what are the duplicates. Regards Michel Report message to a moderator Re: ORA-00001: unique constraint violated [message #338709 is a reply to message #338708] Tue, 05 August 2008 14:26 babuknb Messages: 1734Regist
2012 - 5:01 pm UTC Category: Database – Version: 9.2 Latest Followup You Asked Hi Tom, After going through Oracle 9i conecpts manual and your site I have not understood yet following concept A constraint that is defined as deferable https://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:10954765239682 can be specified as one of following 1. initially immediate or 2. initially defered
https://blogs.oracle.com/db/entry/master_note_for_mview_ora-_error_diagnosis_for_materialized_view_create_or_refresh I think I know what is defered constraints but not defered initally immediate and defered initially defered constraints and secondly what is the use of these constraints ? ( Defered constraints can be use for child parent insert ) It will be great help if you explain above two concepts with examples. thanks for your help. and we error in said... The initially immediate/deferred part tell us how the constraint should be enforced by default o initially immediate -- check constraint at the end of the statement execution o initially deferred -- wait to check until the transaction ends (or you invoke set constraint immediate) Consider: ops$tkyte@ORA920> create table t 2 ( x int constraint check_x check ( x > 0 ) deferrable initially immediate, 3 y int constraint check_y check ( y > error in materialized 0 ) deferrable initially deferred 4 ) 5 / Table created. ops$tkyte@ORA920> ops$tkyte@ORA920> insert into t values ( 1,1 ); 1 row created. ops$tkyte@ORA920> commit; Commit complete. so, when both constraints are OK, rows go in... ops$tkyte@ORA920> ops$tkyte@ORA920> insert into t values ( -1,1); insert into t values ( -1,1) * ERROR at line 1: ORA-02290: check constraint (OPS$TKYTE.CHECK_X) violated check_x is deferrable but initially "immediate" so that row is rejected straight away ops$tkyte@ORA920> insert into t values ( 1,-1); 1 row created. Now, the constraint check_y is deferrable and initially deferred so it doesn't fail until.... ops$tkyte@ORA920> commit; commit * ERROR at line 1: ORA-02091: transaction rolled back ORA-02290: check constraint (OPS$TKYTE.CHECK_Y) violated we commit ops$tkyte@ORA920> ops$tkyte@ORA920> set constraints all deferred; Constraint set. ops$tkyte@ORA920> insert into t values ( -1,1); 1 row created. Now, by setting the initially immediate constraint to deferred mode -- that statement succeeds, but.. ops$tkyte@ORA920> commit; commit * ERROR at line 1: ORA-02091: transaction rolled back ORA-02290: check constraint (OPS$TKYTE.CHECK_X) violated the transaction fails since the check constraint is checked upon commit.. ops$tkyte@ORA920> ops$tkyte@ORA920> set constraints all immediate; Constraint set. ops$tkyte@ORA920> insert into t values ( 1,-1); insert into t values ( 1,-1) * ERROR at line 1: ORA-02290: check constraint (OPS$TKYTE.CHECK_Y) violated and now the statement that used to work when t
Transpo... » Master Note for MVIEW 'ORA-' error diagnosis. For Materialized View CREATE or REFRESH By LajosV-Oracle on Sep 01, 2010 ++++++++++++++++++++++++++++++++++++++++++++++++++++The complete and the most recent version of this article can be viewedfrom My Oracle Support Knowledge Section.Master Note for MVIEW 'ORA-' error diagnosis. For Materialized View CREATE or REFRESH (Doc ID 1087507.1)++++++++++++++++++++++++++++++++++++++++++++++++++++ Applies to: Oracle Server - Enterprise Edition - Version: 10.1.0.5 to 11.2.0.2.0 - Release: 10.1 to 11.2Information in this document applies to any platform. Purpose How to use this Doc.This article has been created to provide a path to existing My Oracle Support articles that have beenwritten to cover the many possible 'ORA-' related issues that can arise from the creation, refresh andgeneral maintenance of Materialized Views (also know as - Snapshots / MVIEW).Please follow the links above or use the error message you would like a possible solution to as the search criteria (Ctrl-f) within this document.The search will take you to the section that explains the error, and provides links to existing documents (where they exist) in My Oracle Support. These documents have been written from previousoccurance of the error and show the Cause and Solution in each case. Which ORA- error message should I use?The error messages will appear as a single line or part of an error stack. It is a good idea to use thecorrect error as some are just high level errors that are not too important initially. Example 1.ORA-12028: materialized view type is not supported by master site @RKEK2212.EVA.TAO.SE Example 2.ORA-12012: error on auto execute of job 32ORA-12008: error in materialized view refresh path -- These 2 lines are ORA-01008: not all variables bound -- significant hereORA-02063: preceding line from DMDPRODORA-06512: at "SYS.DBMS_SNAPSHOT", line 2251ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2457ORA-06512: at "SYS.DBMS_IREFRESH", line 685ORA-06512: at "SYS.DBMS_REFRESH", line 195 Scope and Application This is article is intended for DBA's, Users and Support Engineers who have received an ORA- type error when running, refreshing or creating Materialized Views (MVIEWs). Master Note for MVIEW 'ORA-' error diagnosis. For Materialized View CREATE or REFRESH Error List with explanations and links to Oracle Support Articles 1. ORA-04021: timeout occurred while waiting to lock object %s