Instead of trigger on a Materialized view?

Similar Questions

• Trigger on the materialized view

  Hello

  I have the scenario based (Database 11 g):

  There is a view materialized (PERSON), which contains the ID and NAME fields. This MV is update daily with a fast refresh.

  I have a second array (NAMES), with ID and NORM_NAME. This table contains the name of the person, without special characters.

  For example, for recording / * 1 BJORN * / in the PERSON table

  I would check * 1 BJORN * / in table NAMES.

  
  

  Problem is how to fill the NAME table after the filling of the materialized view.

  I used a trigger AFTER INSERT or update, as described below, but even if I update the master table (for this purpose, update the MV), I have only to trigger inserts.

  
  

  Is there a way to implement a trigger "after update" on a materialized view, or do I need another approach?
  

  
  

  /*

  
  

  create or replace TRIGGER TRG_TESTE_MV

  AFTER INSERT OR UPDATE ON THE PERSON

  REFERENCING OLD AS OLD AGAIN AS NEW

  FOR EACH LINE

  BEGIN

  IF THE INSERTION

  INSERT THE NAMES

  VALUES

  (: NEW.id,:NEW.NAME);

  END IF;

  IF THE UPDATE CAN

  UPDATE OF NAMES

  SET NAME =: NEW.NAME WHERE ID =: NEW.id;

  END IF;

  END;

  */

  Thanks for any help

  Your trigger fires, but I doubted that you will be satisfied with the results. You really need to understand how to refresh process works before you begin creating triggers of MV:

  SQL > create table emp1 in select * from EMP
  2.

  Table created.

  SQL > create materialized view emp1 with rowid journal
  2.

  Materialized view log that is created.

  SQL > create materialized view emp1_mv
  2 fast refresh
  3 on request
  4 with rowid
  5 as
  6 select * from emp1
  7.

  Materialized view created.

  SQL > create or replace
  trigger 2 emp1_mv_biudr
  3 before inserting
  4 or update
  5 or delete
  6 on emp1_mv
  7 for each line
  Start 8
  9 insert then dbms_output.put_line ('INSERT' |: new.ename); end if;
  10 if the deletion then dbms_output.put_line ('REMOVE' |: old.ename); end if;
  11 end;
  12.

  Trigger created.

  SQL > insert
  2 in emp1 (empno, ename, sal)
  3 values(1,'X',1000)
  4.

  1 line of creation.

  SQL > validation
  2.

  Validation complete.

  SQL > set serveroutput on
  SQL > exec dbms_mview.refresh ('emp1_mv', 'f');
  INSERTION OF X

  PL/SQL procedure successfully completed.

  SQL > update emp1
  2 set sal = sal + 1
  3 where ename ('King', 'JONES')
  4.

  2 lines to date.

  SQL > validation
  2.

  Validation complete.

  SQL > set serveroutput on
  SQL > exec dbms_mview.refresh ('emp1_mv', 'f');
  INSERTION OF JONES
  INSERTION OF KING

  PL/SQL procedure successfully completed.

  SQL > delete emp1
  2 where in ename ('ALLEN', 'SMITH')
  3.

  2 deleted rows.

  SQL > validation
  2.

  Validation complete.

  SQL > set serveroutput on
  SQL > exec dbms_mview.refresh ('emp1_mv', 'f');

  PL/SQL procedure successfully completed.

  SQL >

  As you can see, refresh MV updates ever. Results update underlying table to remove/insert in MV. That's why your trigger will not give the results that you expected.

  SY.

• Create materialized view at the trigger.

  Hello

  I use version below:

  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production

  PL/SQL Release 11.2.0.1.0 - Production

  I created a materialized view query below:

  CREATE THE FSG1_FUND000 MATERIALIZED VIEW

  PCTUSED, PCTFREE 5 70

  Users TABLESPACE

  STORAGE (INITIAL 500K NEXT 500K)

  Refresh a start fast with (sysdate) next (sysdate + (1 / 1440))

  WITH rowid

  AS

  SELECT * FROM ABNDEV_T24. FSG1_FUND000@abndev;

  This Mview if any insert or update only (WITHOUT DELETING) are coming which should be copy to another table. But in mView trigger does not work.

  So pls advice me no alternative.

  Querys trigger:

  create or replace trigger trg_dummy

  after insert or update on FSG1_FUND000

  for each line

  Start

  If the insertion

  insert into FSG1_FUND001 (RECID, XMLRECORD) values (: new.) RECID,: new. XMLRECORD);

  elsif update then

  insert into FSG1_FUND001 (RECID, XMLRECORD) values (: new.) RECID,: new. XMLRECORD);

  end if;

  end;

  /

  Kind regards

  Villa

  Hello

  I learned and referred website as much as we can not able to create a trigger in MView (sorry we create trigger but none use of creation because in view no insert and update happened). So I drop completely the materialized view concepts and relaxation.

  Instead of, I have using the procedure to insert records in a table and then I created one by dbms_scheduler job.

  This discussion will be useful for any future reference.

  -procedure-

  create or replace procedure p2

  as

  Start

  INSERT / * + APPEND * / INTO FSG1_FUND000 SELECT * FROM FSG1_FUND000@remote;

  End; BluShadow

  /

  -----------------job--------------------

  Begin

  DBMS_SCHEDULER. () CREATE_JOB

  job_name-online "JOB4."

  job_type-online "PLSQL_BLOCK."

  JOB_ACTION => ' BEGIN p2; END;',

  start_date => SYSDATE,

  repeat_interval => ' FREQ = MINUTELY; INTERVAL = 5;',

  End_date => NULL,

  -Online TRUE, enabled

  comments => "Inserting a record in a table");

  end;

  /

• How to create components of ADF BC as EO 'view with INSTEAD of trigger.

  I have a 'vision with INSTEAD OF trigger' on an external schema. is it possible to create the ADF EO on top of this point of view in my local schema?. If possible, then it is possible to insert/update this portal uses standard data ADF controls and module application.? I'm trying to see if it is possible with the standard controls of ADF without calling pl/sql API for insert/update this external table. any ideas are appreciated.
  
  
  --
  
  Kind regards
  
  Surya

  http://stegemanoracle.WordPress.com/2006/03/15/using-updatable-views-with-ADF/

• Overhead of triggers VS materialized view log files

  If I need to log UPDTEs, insertions and deletions on a table - is there a difference in charge through newspapers vs MV triggers?
  
  Thank you

  You said that MV newspaper is slightly more effective than a trigger. I'm curious to know why. How they work differently under the hood?

  If the essence of the debate is only why MV newspaper is more effective than the trigger that I think that Justin has stressed that is below good technical points

  1. you don't have to order at the PL/SQL engine.
  2. you also write the binary data that you will put in the newspapers of recovery instead of column-level data.
  And below the text in the documentation:

  Trigger internal for the materialized view log

  When changes are made to the master table or master materialized with DML view, an internal trigger records information about the affected rows in the materialized view log. This information includes the values of the primary key, rowid, or id of the object or both, as well as the values for the other columns in the materialized view log. It is an intern AFTER trigger LINE that runs automatically when you create a journal of materialized to view table main target or master materialized view. It inserts a line in the materialized view log, whenever an INSERT, UPDATE, or DELETE statement modifies data in the table. This trigger is always the last to fire.

  http://docs.Oracle.com/CD/B28359_01/server.111/b28326/repmview.htm#i30732

  3 trigger, i.e. we are coding for the track changes, newspaper MV i.e. tool/technology, which is provided by Oracle itself; So certainly "we are not that much able to write code that is equal to or better than the Oracle itself right?

  Feature of MV's trigger INSTEAD of, but under the hood, with close to internal components of Oracle.

  Concerning
  Girish Sharma

• change the source tables in the materialized view

  If I change the name of the source table in a materialized view, I have to delete and recreate the MV? For example, My MV uses a table from a DBlink. Instead I want to physically copy the table in the schema, and then create the MV using the local table, then change MV to use the remote table and I expect to start refreshing the MV for incremental data. Can I do it?

  No, you can't.  Oracle has no way of knowing that the modified table (name) is identical to the original table.

  Hemant K Collette

• Difference between the table and Materialized View

  Is there an advantage outside automatic synchronization (founded refresh selected type) using Materialized View?

  I came across this question as table and MV both store values, and we can also update table using the code what is the need of MV? Why not create a table instead of MV with the same definition and same charly?

  I need some explanation to force someone to convince himself.

  Thank you

  http://docs.Oracle.com/CD/B19306_01/server.102/b14223/basicmv.htm

  Sections that highlight its strengths:

  1. materialized views for data warehouses

  2. materialized views for distributed computing

  Query, re - write, features as Materialized view log files that can be used for replication between databases, etc...

• Error ORA-01115 creating the materialized view

  Hi friends,

  When I create a materialized view it by throwing some error

  CREATE THE PNR_RES_MV MATERIALIZED VIEW
  TABLESPACE FAS
  NOCACHE
  LOGGING
  NOCOMPRESS
  NOPARALLEL
  IMMEDIATE CONSTRUCTION
  REFRESH THE STRENGTH TO DEMAND
  WITH THE PRIMARY KEY
  AS
  SELECT C_CREATION_DATE, C_PNR, B.CARRIER_CD1, B.CARRIER_CD2, B.CURRENT_STATUS_CD, A.CANCELLED_IND, A.BOOKING_OFFC_NMBR,-, B.LEG_NMBR, C_PAX_NMBR
  COUNT (CASE WHEN TRIM (B.CURRENT_STATUS_CD) = "HK" AND (TRIM (C_CHANGE_OR_CANCELL_IND) = "OR C_CHANGE_OR_CANCELL_IND IS NULL) THEN 1 OTHER TRAILING NULL) CONFIRMED_COUNT,.
  COUNT (CASE WHEN (B.CURRENT_STATUS_CD) TRIM = "HK" AND (TRIM (C_CHANGE_OR_CANCELL_IND) = "or C_CHANGE_OR_CANCELL_IND IS NULL) null THEN 1 OTHER END) cancELLED_COUNT
  OF PNR_RES_LEG_PAX_MV B, PNR_RES HAS
  WHERE A.PNR = B.PNR
  AND a.CREATION_DATE = b.CREATION_DATE
  - and A.BOOKING_OFFC_NMBR = '1F'
  - AND C_PNR = 'XE76V. '
  AND A.FILE_UPDATE_DATE. A.UPDATE_DATE IN (SELECT MAX (D.FILE_UPDATE_DATE |)) (UPDATE_DATE) OF PNR_RES D WHERE D.PNR = B.PNR AND D.CREATION_DATE = B.CREATION_DATE)
  GROUP OF C_CREATION_DATE, C_PNR, B.CARRIER_CD1, B.CARRIER_CD2, B.CURRENT_STATUS_CD, A.CANCELLED_IND, A.BOOKING_OFFC_NMBR;

  
  

  
  

  When executing it it gives this error

  
  

  ORA-01115: reading block IO file error 4 (block # 63757)
  ORA-01110: data file 4: ' D:\APP\IGT\ORADATA\ORCL\USERS01. DBF'
  ORA-27070: async read/write failed
  OSD-04006: ReadFile() failure, unable to read the file
  S/O-error: (27 OS) the drive cannot find the sector requested.

  
  

  
  

  And I checked through RMAN

  RMAN > validate the audit logic datafile 4;

  From post 11 March 14
  using the control file of the target instead of recovery catalog database
  allocated channel: ORA_DISK_1
  channel ORA_DISK_1: SID = 127 type device = DISK
  channel ORA_DISK_1: starting from the data file validation
  channel ORA_DISK_1: datafile (s) for specification validation
  Enter a number of file datafile = 00004 name = D:\APP\IGT\ORADATA\ORCL\USERS01. DBF
  RMAN-00571: ===========================================================
  RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.
  RMAN-00571: ===========================================================
  RMAN-03009: failure to validate the command channel ORA_DISK_1 11/03/2014 13:0
  04:12
  ORA-19501: read error on the file 'D:\APP\IGT\ORADATA\ORCL\USERS01. DBF', block numbe
  r 63745 (block size = 8192)
  ORA-27070: async read/write failed
  OSD-04016: error queuing an asynchronous i/o request.
  S/O-error: (27 OS) the drive cannot find the sector requested.

  
  

  
  

  Please suggest me what to do it is a mistake to associate related database or OS. DB version is - 11 GR 2

  
  

  Kind regards

  
  

  Arya
  

  
  

  This is the error message that you should focus:

  > O/S-error: (27 OS) the drive cannot find the sector requested.

  Run disk checker utilities, eventually the file system is damaged.

  Hemant K Collette

• Do not to use the materialized view

  I wonder if we've already created a materialized view, can we prefer not to use this point of view, materialized for a query? I want to say can we determine if a query uses MV and other queries don't use MV?  Thank you.

  Hello Indra,

  I'm not completely sure about that, but you can read (with examples) concerning the indications- NO_REWRITE and REWRITE

  Text over the doc links:

  Council of REWRITING:

  The REWRITE Council instructs the optimizer to rewrite a query regarding the materialized views when possible, regardless of cost. Use the REWRITE trick with or without a display list. If you use REWRITE with a view list and the list contains an eligible materialized view, then Oracle uses this view regardless of its cost.

  Tip NO_REWRITE:

  The NO_REWRITE Council tells the optimizer to disable the rewrite of the query to the query block, of the substitution of the definition of the parameter QUERY_REWRITE_ENABLED .

  Be aware! -The NOREWRITE suspicion has been deprecated. Use the NO_REWRITE hint instead.

  Read here: setting QUERY_REWRITE_ENABLED

  -Nordine

• Fast refresh of a materialized view works incorrect

  Hi all

  I created a MV using the sql below:

  create a materialized view WLS

  Refresh quickly

  activate the query rewriting

  as

  SELECT Employees.USER_NAME,

  Permissions.ROLE_NAME,

  Vouchers.VOUCHER_ID,

  EmployeeRoles.FROM_DATE,

  EmployeeRoles.TO_DATE,

  VoucherPatterns.rowid ACC_VOUCHER_PATTERNS_ROW_ID,

  Vouchers.ROWID ACC_VOUCHERS_ROW_ID,

  Ledgers.ROWID ACC_LEDGERS_ROW_ID,

  Employees.ROWID BANK_EMPLOYEES_ROW_ID,

  IncExcUnits.rowid INC_EXC_UNITS_ROW_ID,

  EmployeeRoles.rowid BANK_EMPLOYEE_ROLES_ROW_ID,

  ParentRoles.rowid PARENT_ROLES_ROW_ID,

  Roles.ROWID ROLES_ROW_ID,

  Permissions.ROWID PERMISSIONS_ROLES_ROW_ID,

  RolesMemberships.rowid ROLES_MEMBERSHIPS_ROW_ID

  OF ACC_VOUCHER_PATTERNS VoucherPatterns,.

  Good ACC_VOUCHERS,

  ACC_LEDGERS books,

  BANK_EMPLOYEES employees,

  BANK_EMPLOYEE_INC_EXC_UNITS IncExcUnits,

  BANK_EMPLOYEE_ROLES EmployeeRoles,

  ParentRoles ROLES,

  Roles,

  Permissions of ROLES,

  ROLES_MEMBERSHIPS RolesMemberships

  WHERE Vouchers.TYPE_VOUCHER_PATTERN_FK =

  VoucherPatterns.VOUCHER_PATTERN_ID

  AND VoucherPatterns.CONFIRM_COUNT = 2

  AND Vouchers.STATE = 'UIS.

  AND Vouchers.LEDGER_FK = Ledgers.LEDGER_ID

  AND Employees.ID = IncExcUnits.BKEM_ID (+)

  AND (((IncExcUnits.INC_EXCLUD_TYPE EST NULL ou))

  IncExcUnits.INC_EXCLUD_TYPE! = "EXC") AND

  Ledgers.ORGANIZATION_UNIT_FK = Employees.ORGU_ID) OR

  (Ledgers.ORGANIZATION_UNIT_FK = IncExcUnits.ORGU_ID AND)

  IncExcUnits.INC_EXCLUD_TYPE = 'INC'))

  AND EmployeeRoles.BKEM_ID = Employees.ID

  AND ParentRoles.ID = EmployeeRoles.ROLS_ID

  AND ParentRoles.IS_PERMISSION = n

  AND ParentRoles.ROLE_TYPE = 'ORG '.

  AND ParentRoles.ID = Roles.ROLS_ID

  AND Roles.IS_PERMISSION = n

  AND Roles.ROLE_TYPE = 'SYS '.

  AND Permissions.IS_PERMISSION = 'Y '.

  AND Permissions.ROLE_NAME = 'ACC_AccVoucherConfirm. '

  AND Roles.ID = RolesMemberships.ROLS_ID

  AND Permissions.ID = RolesMemberships.ROLS_ID_MEMBER_OF;

  Then I issued a SELECT statement * although it and that works very well.

  And then I manipulated the data in tables such as, according to the clause WHERE MV, it should return no rows.

  Intuitively it will return the last data placed on it, before updating the MV

  But it returns the same data after issuing the following command in PL/SQL Developer:

  Call dbms_mview.refresh ("list = > ' WLS", method = > 'F');

  And unfortunately what follows will fix:

  Call dbms_mview.refresh ("list = > ' WLS", method = > "C");

  Why the Quick cooling of a refreshable quick MV works fine when its full refresh works well?

  How ever after that defeat made changes to tables and deliver the fast refresh using the following command the MV will contain accurate updated data:

  Call dbms_mview.refresh ("list = > ' WLS", method = > 'F');

  It seems that there is bug in clear lines of Fast refreshable MV but upserts work very well.

  I tried to simulate the problem to a simple query with simple tables with sample data, but those who have no problem.

  Please help me,

  Thank you

  And the solution is simple,

  Just avoid using the OR condition described in the WHERE clause and use UNION ALL instead!

  Don't forget that you have a calculated column of unique Creator for each of your unions.

  Thanks to myself!

• Materialized view, based on the stored procedure

  Hi all

  is it possible to create a materialized view on the results returned by a stored procedure?

  If this is not the case, do you think that any other way except for filling a table with data from the stored procedure and then founded the MV on it?

  Thanks in advance.

  MichaelTsilikidis wrote:

  Sorry I don't speak properly. In fact the procedure does not return a value, it fills one of its parameters (of the ref cursor type) of data. That's what I wanted.

  No it's not.

  REF CURSOR don't store data, so it's not possible.

  A Ref cursor is just a pointer to a query... and you can't "select from" a ref cursor, you can retrieve only one open.

  PL/SQL 101: Understand the Ref Cursor

  As correctly stated above, you can't question from a procedure to a function, and a materialized view is based on a query, you cannot use a procedure in a materialized view.

  You could use a function pipeline instead of a procedure, or have the pipeline function obtain the results of the procedure and pipelines, and then the materialized view could be based on the results of this function in the pipeline.

  example of function pipeline:

  SQL > CREATE or REPLACE TYPE AS OBJECT num_descript (num number, descript varchar2 (30))
  2.

  Type of creation.

  SQL >
  SQL > CREATE or REPLACE TYPE tbl_num_descript AS TABLE OF THE num_descript
  2.

  Type of creation.

  SQL >
  SQL >
  SQL > CREATE or REPLACE PACKAGE AS-reftest
  2 FUNCTION pipedata (number p_choice) tbl_num_descript RETURN PIPELINED;
  3 END;
  4.

  Package created.

  SQL >
  SQL > CREATE or REPLACE PACKAGE BODY AS-reftest
  2 FUNCTION pipedata (number p_choice) tbl_num_descript RETURN PIPELINED IS
  3 v_obj num_descript: = num_descript (NULL, NULL);
  4 v_rc sys_refcursor;
  5 BEGIN
  6. IF p_choice = 1 THEN
  7 v_rc OPEN to SELECT empno as num, ename like descript FROM emp;
  8 ELSIF p_choice = 2 THEN
  9 OPEN v_rc to SELECT deptno as num, dname as descript OF THE Department;
  10 END IF;
  11 LOOP
  12 FETCH v_rc INTO v_obj.num, v_obj.descript;
  EXIT 13 WHEN v_rc % NOTFOUND;
  14 PIPE ROW (v_obj);
  15 END LOOP;
  16 v_rc NARROW;
  RETURN 17;
  18 END;
  END 19;
  20.

  Package body created.

  SQL > select * from table (reftest.pipedata (1));

  DESCRIPT NUM
  ---------- ------------------------------
  7369 SMITH
  7499 ALLEN
  7521 WARD
  7566 JONES
  7654 MARTIN
  7698 BLAKE
  7782 CLARK
  7788 SCOTT
  KING 7839
  7844 TURNER
  7876 ADAMS
  JAMES 7900
  7902 FORD
  7934 MILLER

  14 selected lines.

  SQL > select * from table (reftest.pipedata (2));

  DESCRIPT NUM
  ---------- ------------------------------
  10 ACCOUNTING
  SEARCH 20
  30 SALES
  40 OPERATIONS

• the materialized view query

  Hello
  
  I had created a materialized view, it refreshes every 3 minutes. At the end of 3 minutes next time we are accessing the old records of materialized view should be deleted. Can someone help me with this query...
  

  create or replace materialized view deptd_mvu
       refresh fast on commit
       start with sysdate
       next sysdate + 3/(60*24)
       as select *
          from deptd;

  969052 wrote:
  No, my query shows all data are there is no error in my query? can u help me

  # It is not a mistake on your part of the implementation or Oracle. Error lies in understanding.

  Materialized view appeared in SELECT * FROM DEPT; So, it must take all the data that are available in the Dept table each time it is regenerated.

  What you intend to do is force the MView to choose the data "Modified" of table DEPT. Is not possible, unless you have some distinctive sign that the MView should be checked.

  For Eg :-(just an idea that I did not test this)

  Adding another column to identify records updated the: -.

  alter table dept add is_modified varchar2(1) default 'N';
  

  MView create instruction me altered as

  select *
    from dept
  where is_modified = 'Y';
  

  Write a trigger that sets the column IS_MODIFIED 'Y', each time that a record is inserted or updated. Don't worry about the deleted records (if this isn't a Soft Delete) as MView does not see records that are not present in the master table.

  You simply need to ensure that, whenever the MView is refreshed, the IS_MODIFIED the Department table must be set to 'n', so that it does not display a false positives.

• Is it possible to limit registration of deletion in the MATERIALIZED VIEW UPDATE?

  Hello
  I have materialized view can be updated and I want to just limit the functionality of record deletion on this point of view.
  that is, the user should update the view but not able to delete the records.
  
  Is it possible if yes then please describe the steps.
  
  Kind regards
  Kam.

  If your point of view materialzed is editable, write a trigger and throw an exception on delete.

  for triggers on views materialzed see...

  http://asktom.Oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:672989600346945045

• The Transformation of the Star can treat materialized views?

  Hello
  
  Oracle data warehouse Guide says that "the optimizer generates a subquery for a dimension table" when you apply a transform star. Star processing restrictions refer always to "dimension tables. I am referring to an Oracle 11 g server.
  
  My question is: If star can also manipulate materialized views instead of tables in database size? In my scenario, I intend to use views materialized, derived from dimension tables to build a simple star around a fact table schema. SQL queries directly consult the materialized views (contain the names of materialized views in the FROM clause) - no rewriting query or dimensional rollup is intended.
  
  Thanks for your advice.
  
  Concerning
  Johannes

  >
  If star can also manipulate materialized views instead of tables in database size?
  >
  Yes - in your use case, they are one and the same. A dimension table is a table that has a foreign key to one or more columns in the fact table.

  Your VM is your dimension tables.

• Refresh/update of the data in a materialized view

  Hello
  I have question about data in a materialized view, and how it is updated. I think Matt has all my dimension-ID and my (for my specialize needs) aggregated measures of my fact table. I used mat View Wizard to create my opinion - which works perfectly. But now I wonder if I should create some sort of mapping (?) or some kind of trigger to refresh the data in the view of mast. Or are updated automatically when I start my fact table mappings. I use OWB 11 GR 2
  
  THX

  MVs have properties for update - you a discount based on schedules or when dependent data are committed or manually.

  See you soon
  David