CREATE A CONNECTION MATERIALIZED VIEW / SNAPSHOT LOG

Hello

Is there a difference between create log materialized view on and instant on creat.

Did some research on Google, who discovered: a snapshot log is a related table
the main table of a capture instant and is used for updating snapshots of the Greenbelt master.
The materialized view log is a table associated with the master table of a materialized view. Appear to be the same.

Moreover, import these tables? My database will work normally without the view log.

Kind regards
Becks

There is no difference.

The so-called "Snapshot Logs" pre Oracle8i were called "Materialized View Logs" for Oracle8i.

Search the syntax of SQL to CREATE MATERIALIZED VIEW LOG.

Hemant K Collette

Tags: Database

Similar Questions

  • Is it possible to create an empty materialized view?

    Hi all!
    I am creating a complex materialized view, but actually the query returns no data.
    It seems that it is not accepted by Oracle 10 g, is it true? I've not found anything research literature.

    The error I get is 'No more data to read shooting' and the connection to the DB is thus broken.
    Maybe you have ideas about the causes of this behavior?

    Thank you!

    Super multi-post forum

    Published by: Tubby on December 28, 2010 20:30

  • is this allowed? materialized view the log for the remote database (via db lin

    : Hi guys.

    try to do

    create materialized view log on user@xxx with sequence, rowid (col1, col2), including the new values;


    where xxx is a remote db link
    ------

    had this error

    ORA-00949 - illegal reference to the remote database

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    help pleaase!

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    do you mean that the materialized log should be created in the same location where the main table

    YES. Of course, it must be there! Any update to the main table should also update the MV log that is created against it!

    Hemant K Collette

  • 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,.
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    OF PNR_RES_LEG_PAX_MV B, PNR_RES HAS
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    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)
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    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

  • Creating a discount on commit Materialized view

    Hello

    I am trying to create a refresh materialized view validation so that whenever I run followed by DML commit on Master he table should get quickly reflect in my view materialized.

    I gave SELECT on table privilege to the user where this point of view will be created

    The master:

    GRANT SELECT ON HR. EMPLOYEES AT SCOTT.

    Scott:

    Scott.hremp CREATE MATERIALIZED VIEW

    COOL OFF QUICKLY ON COMMIT

    AS

    SELECT * FROM HR. EMPLOYEES;

    ERROR on line 4:

    ORA-01031: insufficient privileges

    Then I Grant all on the table EMPLOYEES at SCOTT.

    GRANT ALL ON hr. EMPLOYEES AT SCOTT;

    Then got following error when creating view materilized:

    SQL > CREATE MATERIALIZED VIEW scott.hremp

    2 QUICK REFRESH YOU COMMIT

    3 AS

    4. SELECT * HR. EMPLOYEES;

    SELECT * FROM HR. EMPLOYEES

    *

    ERROR on line 4:

    ORA-23413: table 'HR '. "" EMPLOYEES "do not have a materialized view log

    I create materialized view Master journal:

    SQL > CREATE MATERIALISEE NEWSPAPER VIEW on human resources. EMPLOYEES;

    Materialized view log that is created.

    Even after this, that I'm not able to create not Exist Error in materialized view Table and now:

    SQL > CREATE MATERIALIZED VIEW scott.hremp

    2 QUICK REFRESH YOU COMMIT

    3 AS

    4. SELECT * HR. EMPLOYEES;

    SELECT * FROM HR. EMPLOYEES

    *

    ERROR on line 4:

    ORA-12018: following error occurred during the generation of code for 'SCOTT '. "" HREMP ".

    ORA-00942: table or view does not exist

    Kindly guide me.

    Also, I want to know why I needed to GRANT ALL HR for the creation of this point of view, materialized.

    You also need a (selection) grant on the MV newspaper created for master during an attempt to build a quickly updatable MV.

    ISSUE: Permissions problem making fast refresh

    See you soon,.

  • How to create a complex organization Index Materialized View example

    Hello

    I have a database 11g that I'm trying to create a complex Materialized View I would make organization Index? How can I specify that I want for a primary key?
    CREATE THE RCS_STG MATERIALIZED VIEW. MV_NEXT_HOP_iot
    INDEX OF THE ORGANIZATION
    AS
    SELECT r1.resource_key, resource_key2, r2.resource_full_path_name, device_name, r2.resource_key, device_model,.
    service_telephone_number, service_package_name, telephone_number.telephone_number_key, c1.created_on
    OF network_resource r1 PARTITION (network_resource_subinterface).
    connection c1,
    network_resource r2 PARTITION (network_resource_subinterface),
    device d1,
    tn_network_resource,
    telephone_number
    WHERE r1.resource_key = c1.resource1_key
    AND c1.resource2_key = r2.resource_key
    AND d1.device_key = r2.device_key
    AND tn_network_resource.resource_key (+) = r2.resource_key
    AND telephone_number.telephone_number_key (+) = tn_network_resource.telephone_number_key
    UNION ALL
    SELECT r2.resource_key, resource_key2, r1.resource_full_path_name, device_name, r1.resource_key, device_model,.
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    AND telephone_number.telephone_number_key (+) = tn_network_resource.telephone_number_key
    /

    I get an error ORA-25175: no PRIMARY KEY constraint found

    I want to say resource_key, resource_key2, and service_telephone_number as my primary key?

    user12002352 wrote:
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    Should I do a create table iot_example in select * from 'my query above.

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    Take this knowledge and create the table you normally create a table (columns, constraints, etc...) as I showed in my example. And then post your order to create materialized view as you now except use the syntax I have demonstrated to make use of the existing index organized table.

  • 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

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    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;

    /

  • extracting data from the CLOB using materialized views

    Hello

    We have xml data from clob which I have a requirement to extract (~ 50 attributes) on a daily basis, so we decided to use materialized views with refreshes full (open good suggestions)

    A small snippet of code

    CREATE THE MWMRPT MATERIALIZED VIEW. TASK_INBOUND

    IMMEDIATE CONSTRUCTION

    FULL REFRESH ON DEMAND

    WITH ROWID

    AS

    SELECT M.TASK_ID, M.BO_STATUS_CD, b.*

    OF CISADM. M1_TASK m,

    XMLTABLE (' / a ' XMLPARSE PASSING ())

    CONTENT '< a > | M.BO_DATA_AREA | "< /a >."

    ) COLUMNS

    serviceDeliverySiteId varchar2 (15) PATH

    "cmPCGeneralInfo/serviceDeliverySiteId"

    serviceSequenceId varchar2 (3) PATH "cmPCGeneralInfo/serviceSequenceId"

    completedByAssignmentId varchar2 (50) PATH "completedByAssignmentId."

    Cust_id varchar2 (10) PATH "cmPCCustomerInformation/customerId,"

    ACCT_SEQ varchar2 (5) PATH "customerInformation/accountId"

    AGRMT_SEQ varchar2 (5) PATH cmPCCustomerAgreement/agreementId"."

    COLL_SEQ varchar2 (5) PATH "cmPCGeneralInfo/accountCollectionSeq"

    REVENUE_CLASS varchar2 (10) PATH "cmPCCustomerAgreement/revenueClassCode"

    REQUESTED_BY varchar2 (50) PATH ' attributes customerInformation/contactName',...~50

    This ddl ran > 20 hours and no materialized view created. There are certain limits that we have

    • Cannot create a materialized view log
    • cannot change the source as its defined provider table
    • cannot do an ETL

    DB is 11g R2

    Any ideas/suggestions are very much appreciated

    I explored a similar approach, using the following test case.

    It creates a table "MASTER_TABLE" containing 20,000 lines and a CLOB containing an XML fragment like this:

    09HOLVUF3T6VX5QUN8UBV9BRW3FHRB9JFO4TSV79R6J87QWVGN

    UUL47WDW6C63YIIBOP1X4FEEJ2Z7NCR9BDFHGSLA5YZ5SAH8Y8

    O1BU1EXLBU945HQLLFB3LUO03XPWMHBN8Y7SO8YRCQXRSWKKL4

    ...

    1HT88050QIGOPGUHGS9RKK54YP7W6OOI6NXVM107GM47R5LUNC

    9FJ1JZ615EOUIX6EKBIVOWFDYCPQZM2HBQQ8HDP3ABVJ5N1OJA

    then an intermediate table "MASTER_TABLE_XML" with the same columns with the exception of the CLOB which turns into XMLType and finally a MVIEW:

    SQL > create table master_table like

    2. Select level as id

    3, cast ('ROW' | to_char (Level) as varchar2 (30)) as the name

    4       , (

    5. Select xmlserialize (content

    XMLAGG 6)

    7 xmlelement (evalname ('ThisIsElement' | to_char (Level)), dbms_random.string ('X', 50))

    8                    )

    9 as clob dash

    10                  )

    11 double

    12 connect by level<=>

    (13) as xmlcontent

    14 double

    15 connect by level<= 20000="">

    Table created.

    SQL > call dbms_stats.gather_table_stats (user, 'MASTER_TABLE');

    Calls made.

    SQL > create table (master_table_xml)

    Identification number 2

    3, name varchar2 (30)

    4, xmlcontent xmltype

    5)

    binary xmltype 6 securefile XML column xmlcontent store

    7;

    Table created.

    SQL > create materialized view master_table_mv

    2 build postponed

    full 3 Refresh on demand

    4, as

    5. Select t.id

    6, t.nom

    7       , x.*

    master_table_xml 8 t

    9, xmltable ('/ r' in passing t.xmlcontent)

    10 columns

    11 path of varchar2 (50) ThisIsElement1 'ThisIsElement1 '.

    12, path of varchar2 (50) ThisIsElement2 'ThisIsElement2 '.

    13, path of varchar2 (50) ThisIsElement3 'ThisIsElement3 '.

    14, path of varchar2 (50) ThisIsElement4 'ThisIsElement4 '.

    15 road of varchar2 (50) ThisIsElement5 'ThisIsElement5 '.

    16, road of varchar2 (50) ThisIsElement6 'ThisIsElement6 '.

    17 road of varchar2 (50) ThisIsElement7 'ThisIsElement7 '.

    18 road of varchar2 (50) ThisIsElement8 'ThisIsElement8 '.

    19 road to varchar2 (50) ThisIsElement9 'ThisIsElement9 '.

    20, path of varchar2 (50) ThisIsElement10 'ThisIsElement10 '.

    21, road to varchar2 (50) ThisIsElement11 'ThisIsElement11 '.

    22 road of varchar2 (50) ThisIsElement12 'ThisIsElement12 '.

    23 road of varchar2 (50) ThisIsElement13 'ThisIsElement13 '.

    24, path of varchar2 (50) ThisIsElement14 'ThisIsElement14 '.

    25 road of varchar2 (50) ThisIsElement15 'ThisIsElement15 '.

    26, path of varchar2 (50) ThisIsElement16 'ThisIsElement16 '.

    27, way to varchar2 (50) ThisIsElement17 'ThisIsElement17 '.

    28 road of varchar2 (50) ThisIsElement18 'ThisIsElement18 '.

    29 road of varchar2 (50) ThisIsElement19 'ThisIsElement19 '.

    30, path of varchar2 (50) ThisIsElement20 'ThisIsElement20 '.

    31, path of varchar2 (50) ThisIsElement21 'ThisIsElement21 '.

    32 road of varchar2 (50) ThisIsElement22 'ThisIsElement22 '.

    33, path of varchar2 (50) ThisIsElement23 'ThisIsElement23 '.

    34 road of varchar2 (50) ThisIsElement24 'ThisIsElement24 '.

    35 road of varchar2 (50) ThisIsElement25 'ThisIsElement25 '.

    36, road to varchar2 (50) ThisIsElement26 'ThisIsElement26 '.

    37, path of varchar2 (50) ThisIsElement27 'ThisIsElement27 '.

    38, path of varchar2 (50) ThisIsElement28 'ThisIsElement28 '.

    39, path of varchar2 (50) ThisIsElement29 'ThisIsElement29 '.

    40, road of varchar2 (50) ThisIsElement30 'ThisIsElement30 '.

    41 road of varchar2 (50) ThisIsElement31 'ThisIsElement31 '.

    42, path of varchar2 (50) ThisIsElement32 'ThisIsElement32 '.

    43, road to varchar2 (50) ThisIsElement33 'ThisIsElement33 '.

    44, path of varchar2 (50) ThisIsElement34 'ThisIsElement34 '.

    45, path of varchar2 (50) ThisIsElement35 'ThisIsElement35 '.

    46, path of varchar2 (50) ThisIsElement36 'ThisIsElement36 '.

    47, path of varchar2 (50) ThisIsElement37 'ThisIsElement37 '.

    48, path of varchar2 (50) ThisIsElement38 'ThisIsElement38 '.

    49, path of varchar2 (50) ThisIsElement39 'ThisIsElement39 '.

    50 road of varchar2 (50) ThisIsElement40 'ThisIsElement40 '.

    51, path of varchar2 (50) ThisIsElement41 'ThisIsElement41 '.

    52, path of varchar2 (50) ThisIsElement42 'ThisIsElement42 '.

    53, path of varchar2 (50) ThisIsElement43 'ThisIsElement43 '.

    54, path of varchar2 (50) ThisIsElement44 'ThisIsElement44 '.

    55 road of varchar2 (50) ThisIsElement45 'ThisIsElement45 '.

    56, path of varchar2 (50) ThisIsElement46 'ThisIsElement46 '.

    57, path of varchar2 (50) ThisIsElement47 'ThisIsElement47 '.

    58 road of varchar2 (50) ThisIsElement48 'ThisIsElement48 '.

    59 road of varchar2 (50) ThisIsElement49 'ThisIsElement49 '.

    60 road of varchar2 (50) ThisIsElement50 'ThisIsElement50 '.

    (61) x;

    Materialized view created.

    The discount is then performed in two steps:

    1. INSERT INTO master_table_xml
    2. Refresh the MVIEW

    (Note: as we insert in an XMLType column, we need an XML (only root) document this time)

    SQL > set timing on

    SQL >

    SQL > truncate table master_table_xml;

    Table truncated.

    Elapsed time: 00:00:00.27

    SQL >

    SQL > insert into master_table_xml

    2. select id

    3, name

    4, xmlparse (document '' |) XmlContent |'')

    5 master_table;

    20000 rows created.

    Elapsed time: 00:04:38.72

    SQL >

    SQL > call dbms_mview.refresh ('MASTER_TABLE_MV');

    Calls made.

    Elapsed time: 00:00:22.42

    SQL >

    SQL > select count (*) in the master_table_mv;

    COUNT (*)

    ----------

    20000

    Elapsed time: 00:00:01.38

    SQL > truncate table master_table_xml;

    Table truncated.

    Elapsed time: 00:00:00.41

  • Moving all the newspapers and Materialized View at the schema level using the data pump in

    Hi Experts,

    Please help me on how I can exp/imp all materialized views andMV logs (as are some MVs) only the full scheme of other databases. I want to exclude everything else.

    Concerning
    -Samar-

    Using DBMS_METADATA. Create the following SQL script:

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    SET SERVEROUTPUT ON FORMAT WORD_WRAPPED
    SET TERMOUT OFF
    SPOOL C:\TEMP\MVIEW.SQL
    DECLARE
        CURSOR V_MLOG_CUR
          IS
            SELECT  DBMS_METADATA.GET_DDL('MATERIALIZED_VIEW_LOG',LOG_TABLE) DDL
              FROM  USER_MVIEW_LOGS;
        CURSOR V_MVIEW_CUR
          IS
            SELECT  DBMS_METADATA.GET_DDL('MATERIALIZED_VIEW',MVIEW_NAME) DDL
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        DBMS_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,'SQLTERMINATOR',TRUE);
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          DBMS_OUTPUT.PUT_LINE(V_REC.DDL);
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        FOR V_REC IN V_MVIEW_CUR LOOP
          DBMS_OUTPUT.PUT_LINE(V_REC.DDL);
        END LOOP;
    END;
    /
    SPOOL OFF
    

    In my case the script is saved as C:\TEMP\MVIEW_GEN. SQL. Now I will create a journal mview and mview in schema SCOTT and run the script above:

    SQL> CREATE MATERIALIZED VIEW LOG ON EMP
      2  /
    
    Materialized view log created.
    
    SQL> CREATE MATERIALIZED VIEW EMP_MV
      2  AS SELECT * FROM EMP
      3  /
    
    Materialized view created.
    
    SQL> @C:\TEMP\MVIEW_GEN
    SQL> 
    

    Run the C:\TEMP\MVIEW_GEN script. SQL generated a C:\TEMP\MVIEW queue. SQL:

      CREATE MATERIALIZED VIEW LOG ON "SCOTT"."EMP"
     PCTFREE 10 PCTUSED 30 INITRANS
    1 MAXTRANS 255 LOGGING
      STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1
    MAXEXTENTS 2147483645
      PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL
    DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
      TABLESPACE "USERS" 
    
    WITH PRIMARY KEY EXCLUDING NEW VALUES;
    
      CREATE MATERIALIZED VIEW "SCOTT"."EMP_MV" ("EMPNO", "ENAME", "JOB", "MGR",
    "HIREDATE", "SAL", "COMM", "DEPTNO")
      ORGANIZATION HEAP PCTFREE 10 PCTUSED 40
    INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
      STORAGE(INITIAL 65536 NEXT 1048576
    MINEXTENTS 1 MAXEXTENTS 2147483645
      PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
    BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
      TABLESPACE
    "USERS"
      BUILD IMMEDIATE
      USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 
    
    STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
    
    PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE
    DEFAULT CELL_FLASH_CACHE DEFAULT)
      TABLESPACE "USERS"
      REFRESH FORCE ON
    DEMAND
      WITH PRIMARY KEY USING DEFAULT LOCAL ROLLBACK SEGMENT
      USING ENFORCED
    CONSTRAINTS DISABLE QUERY REWRITE
      AS SELECT "EMP"."EMPNO"
    "EMPNO","EMP"."ENAME" "ENAME","EMP"."JOB" "JOB","EMP"."MGR"
    "MGR","EMP"."HIREDATE" "HIREDATE","EMP"."SAL" "SAL","EMP"."COMM"
    "COMM","EMP"."DEPTNO" "DEPTNO" FROM "EMP" "EMP";
                                   
    

    Now, you can run this on the database. You may need to adjust the tablespace and storage clauses. Or you can add more DBMS_METADATA. SET_TRANSFORM_PARAM calls to C:\TEMP\MVIEW_GEN. SQL to force DBMS_METADATA not to include the tablespace or / and the terms of storage.

    SY.

  • How to refres MATERIALIZED view

    Guy

    We are on the oracle9i database, I created Materialized view and wanted to refres seen helping of below mentioned the package but does not run.

    CREATE MATERIALIZED VIEW REFRESH DEPARTMENT_WISE_SALARY FORCE ON REQUEST TO

    Select D.DEPTNO, D.DNAME, SUM (E.SAL) SALARY OF EMP E, DEPT. D
    WHERE D.DEPTNO = E.DEPTNO
    D.DEPTNO GROUP, D.DNAME


    Run DBMS_REFRESH. REFRESH ('DEPARTMENT_WISE_SALARY');

    But it does not...

    Please any idea

    Hello

    the user this command... Hope, it will help you...: D
    Means of materialized view snapshot
    c means complete

    exec dbms_snapshot.refresh('','C');
    
     
    

    concerning
    K

    Published by: KPR on April 12, 2011 05:24

  • Questions on the tables of materialized views and MV newspaper

    Hi all

    Have some questions about Materialized View.

    (1) once the materialized view reads the records from the table MLOG, reviews the MLOG get purged. fix? or is that not the case? In some cases, I see still (old) records in the MLOG table even after updating MV.

    (2) how the table MLOG distinguishes between a reading which comes from a MV and a reading that comes from a user? If I execute manually
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    (3) one of our MV updates crashes intermittently. Based on the events of waiting I noticed that it was a 'db file sequential read' against the main table. Finally I had to put an end to the update. I don't know why it was sequential reading on the main table when she should be reading the table MLOG. Any ideas?

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    (4) sequential reads on a table are perfectly normal - it just means that someone looking for a block of data in the table (i.e. looking a line in the table of ROWID based on the ROWID in an index or a materialized view log).

    Justin

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