How to stop refreshing materialized views if the source table is null

any ideas?

Probably not what you were hoping for, but here's a few ideas.

Your account shows - 113 (85 pending)
1. How about helping to keep the forum clean by examining your 85 not resolved previous issues and give credit relatively USEFUL or RESPONDED to those who helped you in the past.

2. read the FAQ at the top right of the page and view information about your system and your software so that we know what you're working with.

3 ask your question in the body of the thread. Don't tell "of ideas.

What is your question? Is this an academic question or you have a real problem that needs to be addressed?

If you have a problem producing the DDL for the materialized view, and information about the type of discount that has been set up for this. Is there a newspaper view materialized on the underlying tables?

The simple answer to your quest is to use UPDATE them on REQUEST and check the base tables before making a manual
a: the best answer depends on what version of Oracle you are using and what is your actual configuration. Are your
MVs in REFRESH GROUPS? Who can make a difference in the response.

How can anyone help with this issue if you do not provide the information needed (FAQ)? Why is - someone MUST help if you show you don't appreciate help in marking questions to which answered once you have helped.

Tags: Database

Similar Questions

  • How to fast refresh materialized view parallel

    We have Oracle 11.2.0.1 on Redhat 5.2. We use a dozen views fast refresh materialized in our application.
    Occasionally refresh MV takes longer than the refresh interval.

    One of the ways to improve the performance of refresh MV is to update at the same time, for example
    http://www.dba-oracle.com/t_materialized_views_refreshing_performance.htm
    
    - Use parallel DML - Oracle author Michael Armstrong Smith notes "I've done parallel materialized view refreshing
     on tables recently and improved the load times considerably. Rather than having one load which took 2 hours,
     I run 4 parallel loads, one for each partition. The length of time for the whole process is now determined by
     how long the biggest partition takes to load. In my case, this is 40 minutes, with two 30 minute loads and one
     20 minute load.  Overall I am saving 1 hour 20 minutes. I can now add further partitions and do the same thing.
     My only limitation is the parallel loads because I don't have unlimited processing power.
    {code} My master tables are not partitioned, but think parallel will still better than non-parallel.
    
    Now the question, how to make refresh parallel. According to the paragraph cited above, Use parallel DML appears doing the job. Can someone  confirm that.
    
    We use {code}
    alter materialied view MV_OFFENSE parallel REFRESH FAST start with sysdate next sysdate+ 1/24;
    {code}to schedule refresh. Does the parallel clause here parallels query the MV or refresh the MV?
    
    Any other way to make MV refresh parallel?
    
    Thanks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

    Hello

    Just search for * 577870.1*. But before you search, select ID of item in the source list.

    Hope this helps.
    Best regards
    Jean Valentine

  • Run job/refresh materialized view at the moment!

    Hello

    What is the best use of method you when I want to execute a task that will refresh a materialized view.

    When the user clicks on a button, I want to refresh the materialized view next day at 01:00. Only once.

    Please suggest me the best methods to achieve this. Thanks in advance.


    Kind regards
    Igor

    Create a job.

    DECLARE
    v_job NUMBER;
    BEGIN
    dbms_job. Submit (-online v_job, what => employment ' BEGIN dbms_mvew.refresh (list of-online "schema.mv_name" method => "F");) END;', start_date-online trun (sysdate + 1) + 1/24);
    COMMIT;
    END;
    /

  • How to refresh materialized views

    I'm following the steps to migrate a 12.0.6 financials database to OATM (model Tablespace Oracle Applications). One of the steps say to "perform a refresh all materialized views complete." This step is not part of the Oracle OATM utility. I wasn't able to find much on Metalink on this one. How to achieve this? Thank you... Colin

    Colin,

    See Note: 391483.1 - how to refresh materialized views after migration to the model OATM
    https://metalink2.Oracle.com/MetaLink/PLSQL/ml2_documents.showDocument?p_database_id=not&P_ID=391483.1

  • The Materialized View - ORA-12052: is unable to fast refresh materialized view

    Hello

    I was hitting my head all day trying to create materialized views. I have made some progress, but have hit a brick wall, unfortunately!

    Basically, I have been invited to take a view and see if I can get the benefits of performance by transforming all or part of it in materialized views. Because the underlying tables of the config is updated quite frequently, I want to fast refresh materialized views on commit. However, when I try to create a materialized view containing an outer join in an aggregated materialized view table, I get ORA-12052: is unable to fast refresh materialized view.

    I went through the documentation and also Rob van Wijkvery useful series of blogs on the topic (especially http://rwijk.blogspot.co.uk/2009/09/fast-refreshable-materialized-view.html) but have not found anything that matches. Maybe I missed something somewhere along the line, or maybe I'm asking just something completely impossible?

    My db is 11.2.0.2.

    Here's the test scripts, I've worked with that:

    drop materialized view test1_test2_mv;
    Drop materialized view test2 journal;
    drop table test2;
    Drop materialized view test1_mv newspaper;
    drop materialized view test1_mv;
    Drop materialized view test1 journal;
    drop table test1;

    create table test1 (identification number,
    type varchar2 (10),
    number of Val,
    update_time date,
    constraint t1_pk primary key (id, type, val));

    Insert into test1
    Select 1, 'a', 1001, sysdate - 10/24 Union double all the
    Select 1, 'b', 1003, sysdate - 9/24 Union double all the
    Select 1, 'c', 1002, sysdate - 8/24 Union double all the
    Select 1, had ', 1004, sysdate - 7/24 Union double all the
    Select 1, 'e', 1005, sysdate - 6/24 Union double all the
    Select 1, 'c', 1006, sysdate - 5/24 Union double all the
    Select 2, 'a', 1002, sysdate - 4/24 Union double all the
    Select 2, 'b', 1005, sysdate - 3/24 Union double all the
    Select 3, 'a', 1001, sysdate - 2/24 Union double all the
    Select 3, 'c', 1006, sysdate - 1/24 Union double all the
    Select 3, 'e', 1008, sysdate - 2/24 Union double all the
    Select option 4, has ', 1004, sysdate - 3/24 Union double all the
    Select 5, 'b', 1002, sysdate - 4/24 Union double all the
    Select 5, 'g', 1001, sysdate - 5/24 Union double all the
    Select 6, 'h', 1004, sysdate - 6/24 Union double all the
    Select 7, 'b', 1007, sysdate - 7/24 Union double all the
    Select 7, had ', 1001, sysdate - 8/24 double;

    commit;

    Select * from test1;


    CREATE MATERIALIZED VIEW LOG ON test1
    WITH rowid, primary key (update_time)
    including the new values;


    Test1_mv CREATE MATERIALIZED VIEW
    IMMEDIATE CONSTRUCTION
    COOL OFF QUICKLY ON COMMIT
    Did YOU SELECT id,
    MAX (case when type = "there" end of val) THAT col_a,.
    MAX (case when type = 'b', then val end) AS col_b,.
    MAX (case when type = 'c' then end val) AS col_c,.
    MAX (case when type = ' then end of val) AS col_d,
    MAX (update_time) AS update_time
    OF test1
    WHERE TYPE in ('a',
    « b »,
    « c »,
    a ')
    GROUP BY id;

    CREATE MATERIALIZED VIEW LOG ON test1_mv
    WITH rowid
    including the new values;


    create table test2 (identification number,
    col2 number,
    COL3 varchar2 (10),
    number of COL4,
    constraint t2_pk primary key (id));

    Insert into test2
    Select 1, 1, 'bob', 1 double Union all
    Select 2, 1, "sue", 1 double Union all
    Select 3, 1, 'tom', 1 double Union all
    Select 4, 1, 'jay', 1 double Union all
    Select 5, 1, 'art', 1 double Union all
    Select 6, 1, 'kay', 1 double Union all
    Select 7, 1, 'max', 1 double Union all
    Select 8, 1, 'tim', 1 double Union all
    Select 9, 1, "liz", 1 from dual;

    commit;


    CREATE MATERIALIZED VIEW LOG ON test2
    WITH rowid, primary key
    including the new values;


    Test1_test2_mv CREATE MATERIALIZED VIEW
    IMMEDIATE CONSTRUCTION
    COOL OFF QUICKLY ON COMMIT
    LIKE SOME t2.rowid,.
    T1.ID,
    T1.col_a,
    T1.col_b,
    T1.col_c,
    T1.col_d,
    T1.update_time,
    T2.col2,
    T2. COL3
    OF test1_mv t1,.
    Test2 t2
    WHERE (+) t1.id = t2.id; -symbol of outer join is not correctly displayed on the forums without space, grr!

    ORA-12052: is unable to fast refresh materialized view TEST1_TEST2_MV

    Y at - it any way I can get the materialized view fast refresh on commit or I asking the impossible?

    Add t1.rowid:

    SQL > CREATE MATERIALIZED VIEW test1_test2_mv

    2 BUILD IMMEDIATE

    3 QUICK REFRESH YOU COMMIT

    4 AS t2.rowid SELECT rid2,

    5 t1.rowid rid1,

    6 t1.id

    T1.col_a 7,.

    T1.col_b 8,.

    T1.col_c 9,.

    T1.col_d 10,

    T1.update_time 11,

    T2.col2 12,

    13 t2.col3

    14 OF test1_mv t1,

    15 test2 T2

    16 WHERE t1.id = t2.id

    17.

    Materialized view created.

    SQL > select * from test1_test2_mv

    2.

    RID2 RID1 ID COL_A, COL_B, COL_C COL_D UPDATE_TIME COL2 COL3

    ------------------ ------------------ ---------- ---------- ---------- ---------- ---------- ------------------- ---------- ----------

    AAAYB6AANAAAANDAAA AAAYB/AANAAAAN/AAA 1 1001 1003 1006 1004 25 / 06 / 2014 12:54:16 1 bob

    AAAYB6AANAAAANDAAB AAAYB/AANAAAAN/AAB 2 1002 1005 25 / 06 / 2014 1 sue 14:54:16

    AAAYB6AANAAAANDAAC AAAYB/AANAAAAN/AAC 3 1001 1006 25 / 06 / 2014 16:54:16 1 tom

    AAAYB/AANAAAAN/AAD AAAYB6AANAAAANDAAD 4 1004 25/06/2014 14:54:16 1 jay

    AAAYB6AANAAAANDAAE AAAYB / AANAAAAN / AAE 5 1002 2014/06/25 13:54:16 1 art

    AAAYB6AANAAAANDAAF AAAYB/AANAAAAN/AAG 7 1007 1009 25 / 06 / 2014 10:54:16 max 1

    AAAYB/AANAAAAN/AAH                                                                                                        1 tim

    AAAYB/AANAAAAN/AAF                                                                                                        1 kay

    AAAYB/AANAAAAN/AAI                                                                                                        1 liz

    9 selected lines.

    SQL > update of test2

    2 set col3 = "fly."

    3 where id = 7

    6 m

    1 line update.

    SQL > validation

    2.

    Validation complete.

    SQL > select * from test1_test2_mv

    2.

    RID2 RID1 ID COL_A, COL_B, COL_C COL_D UPDATE_TIME COL2 COL3

    ------------------ ------------------ ---------- ---------- ---------- ---------- ---------- ------------------- ---------- ----------

    AAAYB6AANAAAANDAAA AAAYB/AANAAAAN/AAA 1 1001 1003 1006 1004 25 / 06 / 2014 12:54:16 1 bob

    AAAYB6AANAAAANDAAB AAAYB/AANAAAAN/AAB 2 1002 1005 25 / 06 / 2014 1 sue 14:54:16

    AAAYB6AANAAAANDAAC AAAYB/AANAAAAN/AAC 3 1001 1006 25 / 06 / 2014 16:54:16 1 tom

    AAAYB/AANAAAAN/AAD AAAYB6AANAAAANDAAD 4 1004 25/06/2014 14:54:16 1 jay

    AAAYB6AANAAAANDAAE AAAYB / AANAAAAN / AAE 5 1002 2014/06/25 13:54:16 1 art

    AAAYB/AANAAAAN/AAH                                                                                                        1 tim

    AAAYB/AANAAAAN/AAF                                                                                                        1 kay

    AAAYB/AANAAAAN/AAI                                                                                                        1 liz

    AAAYB6AANAAAANDAAF AAAYB/AANAAAAN/AAG 7 1007 1009 25 / 06 / 2014 10:54:16 1 rob

    9 selected lines.

  • 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

  • Pivot can be used in fast refresh materialized view?

    Hi, I have a question about materialized view nested mode fast refresh on Oracle 11 g (It support function of pivot, but oracle 10 g doesn't support).

    When I created, he throws "ORA-12015: cannot create a view fast refresh materialized by a complex query.
    Then I used dbms_mview.explain_mview to see reason, and it tell me the following
    REFRESH_FAST_AFTER_INSERT ' view inline or subquery in LIST not supported for this type of MV.

    Can someone help me, any suggestions will be appreciated
    create table empX as select * from scott.emp;
    alter table empX add constraint PK_empX_empno primary key (empno);
    
    --drop  MATERIALIZED VIEW LOG ON empX;
    CREATE MATERIALIZED VIEW LOG ON empX with rowid, sequence(empno);
    
    --drop MATERIALIZED VIEW mv_empX;
    CREATE MATERIALIZED VIEW mv_empX
    REFRESH FAST START WITH SYSDATE
    NEXT  SYSDATE + 1/1440
    AS   
      select * from
      (
       select rowid emp_rowid, deptno, job, sal from empX
      )
      PIVOT( max(sal) for job IN ('ANALYST' job1, 'CLERK' job2, 'MANAGER' job3));
     
    --select * from mv_capabilities_table
    declare
      lv_sqltext varchar2(4000);
    begin
      execute immediate 'truncate table mv_capabilities_table';
      lv_sqltext := 'select * from
      (
       select deptno, job, sal from empX
      )
      PIVOT( max(sal) for job IN (''ANALYST'' job1, ''CLERK'' job2, ''MANAGER'' job3))
      ';  
      dbms_mview.explain_mview(lv_sqltext,'nested=>TRUE');
      commit;
    end;
    /

    Let me help you...
    I have done following and it run/view updated because I just replaced quickly with a complete word, because there are limitations for quickly updatable views:

    SQL> show user;
    USER is "SCOTT"
    SQL> create table empX as select * from scott.emp;
    
    Table created.
    
    SQL> alter table empX add constraint PK_empX_empno primary key (empno);
    
    Table altered.
    
    SQL>
    SQL> --drop  MATERIALIZED VIEW LOG ON empX;
    SQL> CREATE MATERIALIZED VIEW LOG ON empX with rowid, sequence(empno);
    
    Materialized view log created.
    
    SQL>
    SQL> --drop MATERIALIZED VIEW mv_empX;
    SQL> CREATE MATERIALIZED VIEW mv_empX
      2  REFRESH COMPLETE WITH rowid
      3  START WITH sysdate
      4  NEXT  SYSDATE + 1/1440
      5  AS
      6    select * from
      7    (
      8     select rowid emp_rowid, deptno, job, sal from empX
      9    )
     10    PIVOT( max(sal) for job IN ('ANALYST' job1, 'CLERK' job2, 'MANAGER' job3));
    
    Materialized view created.
    
    SQL> select * from mv_empx;
    
    EMP_ROWID              DEPTNO       JOB1       JOB2       JOB3
    ------------------ ---------- ---------- ---------- ----------
    AAAShcAAEAAAATTAAN         10                  1300
    AAAShcAAEAAAATTAAE         30
    AAAShcAAEAAAATTAAJ         30
    AAAShcAAEAAAATTAAC         30
    AAAShcAAEAAAATTAAA         20                   800
    AAAShcAAEAAAATTAAK         20                  1100
    AAAShcAAEAAAATTAAM         20       3000
    AAAShcAAEAAAATTAAD         20                             2975
    AAAShcAAEAAAATTAAB         30
    AAAShcAAEAAAATTAAI         10
    AAAShcAAEAAAATTAAL         30                   950
    
    EMP_ROWID              DEPTNO       JOB1       JOB2       JOB3
    ------------------ ---------- ---------- ---------- ----------
    AAAShcAAEAAAATTAAF         30                             2850
    AAAShcAAEAAAATTAAG         10                             2450
    AAAShcAAEAAAATTAAH         20       3000
    
    14 rows selected.
    
    SQL> begin
      2  dbms_mview.refresh('SCOTT.mv_empx');
      3  end;
      4  /
    
    PL/SQL procedure successfully completed.
    
    SQL> select * from mv_empx;
    
    EMP_ROWID              DEPTNO       JOB1       JOB2       JOB3
    ------------------ ---------- ---------- ---------- ----------
    AAAShcAAEAAAATTAAN         10                  1300
    AAAShcAAEAAAATTAAE         30
    AAAShcAAEAAAATTAAJ         30
    AAAShcAAEAAAATTAAC         30
    AAAShcAAEAAAATTAAA         20                   800
    AAAShcAAEAAAATTAAK         20                  1100
    AAAShcAAEAAAATTAAM         20       3000
    AAAShcAAEAAAATTAAD         20                             2975
    AAAShcAAEAAAATTAAB         30
    AAAShcAAEAAAATTAAI         10
    AAAShcAAEAAAATTAAL         30                   950
    
    EMP_ROWID              DEPTNO       JOB1       JOB2       JOB3
    ------------------ ---------- ---------- ---------- ----------
    AAAShcAAEAAAATTAAF         30                             2850
    AAAShcAAEAAAATTAAG         10                             2450
    AAAShcAAEAAAATTAAH         20       3000
    
    14 rows selected.
    
    SQL>
    

    So, the answer is Yes, we can use Pivot with Materialized view but:
    1 MV must be full refresh.
    2 oracle version should be 11 g; of course the pivot is available in Oracle 11 g.

    If this answers your question, please close the message, otherwise continue.

    These links may also be of interest:
    http://docs.Oracle.com/CD/B28359_01/server.111/b28313/basicmv.htm#i1007028
    http://docs.Oracle.com/CD/B28359_01/server.111/b28313/basicmv.htm#i1007007

    http://rwijk.blogspot.in/2009/06/fast-refreshable-MATERIALIZED-view.html

    And:

    Please see if (Note: 179466.1 - view to fast refresh materialized diagnose ORA-12015 / complex queries) help.

    Concerning
    Girish Sharma

  • Refresh materialized views

    Hi all

    I created a procedure to refresh materialized views:

    create or replace procedure refresh_MV1 is
    Start
    dbms_mview. Refresh('Materialized_view_1','C')
    exception
    while others then
    INSERT into tablelog_mv (sysdate, 'Materialized_view_1', substr(sqlerrm,1,200));
    end;
    When I run run this procedurev (exec refresh_MV1), I am getting following error:

    due to: ORA-12018: following error occurred during the generation of code for "ISGCOS". «Materialized_view_1 "ORA-00942: table or view is no ORA-00942: table or view does not exist»

    But if I run anonymously without creating a procedure as below, it works very well and the matte view gets updated:

    Start
    dbms_mview. Refresh('Materialized_view_1','C')
    exception
    while others then
    INSERT into tablelog_mv (sysdate, 'Materialized_view_1', substr(sqlerrm,1,200));
    end;

    I couldn't understand what could be the problem?

    Thank you
    Chrystelle

    Privileges on tables and views must be granted directly to the user when they are referenced in the procedures. Grants to the roles will not work.

    Most likely your username has been granted privileges via a role

    grant all on Materialized_view_1 to myRole;
    grant myRole to myUser; -- this won't give you the privileges in a procedure
    

    You have the privileges directly

    grant all on Materialized_view_1 to myUser
    
  • Reg: Package code to refresh materialized views

    I'm new to pl/sql packages and procedures.i want it running for execution of informatica mappings that takes 0 and 1 gives when it is run successfully

    create or replace the BODY of PACKAGE as pkg_refresh_mv
    procedure prc_mv (p_mv_name varchar2) is
    Start
    dbms_mview. Refresh (p_mv_name);
    end prc_mv;

    procedure refresh_all_mv (proc_response IN OUT number) is


    Start
    dbms_mview. Refresh ("' materialized view", "C");
    dbms_mview. Refresh ("' materialized view", "C");

    proc_response: = 1;
    exception
    while others then
    proc_response: = 0;
    end refresh_all_mv;
    end pkg_refresh_mv;

    When I run this code I get the following errors


    PLS-00201: identifier 'PKG_REFRESH_MV' must be declared.
    PLS-00304: impossible to compile 'PKG_REFRESH_MV' body without its specification

    what needs to be changed


    Thank you

    try this one:

    CREATE OR REPLACE PACKAGE pkg_refresh_mv
    AS
       PROCEDURE prc_mv (p_mv_name VARCHAR2);
       PROCEDURE refresh_all_mv (proc_response IN OUT NUMBER);
    END pkg_refresh_mv;
    /
    
    CREATE OR REPLACE PACKAGE BODY pkg_refresh_mv
    AS
       PROCEDURE prc_mv (p_mv_name VARCHAR2)
       IS
       BEGIN
          dbms_mview.refresh (p_mv_name);
       END prc_mv;
    
       PROCEDURE refresh_all_mv (proc_response IN OUT NUMBER)
       IS
       BEGIN
          dbms_mview.refresh ('materialized view', 'C');
          dbms_mview.refresh ('materialized view', 'C');
    
          proc_response := 1;
       EXCEPTION
          WHEN OTHERS
          THEN
             proc_response := 0;
       END refresh_all_mv;
    END pkg_refresh_mv;
    /
    
  • Fast refresh materialized view problems

    I have two databases (A and B).

    In A database, user NICK has a table called COLOUR_MASTER.
    Also in this database, NICK issues creating materialized command newspaper view colour_master with the primary key, including the new values (and Yes, there is a primary key defined for this table)
    In database B, there is a link of database called A_LINK, connect, Nick, identified by password using 'dbA ';
    In database B, user IAN also creates a materialized view CM_MV cool off quickly in select * from colour_master@A_LINK

    This statement is done correctly, and there are several million lines in CM_MV when it's done.

    Immediately, IAN issued this command:

    Start
    dbms_mview. Refresh ('CM_MV');
    end;

    .. .and after a small pause, it gets the error

    ORA-12008: error path refresh materialized view
    ORA-02068: following sever error of A_LINK
    ORA-03113: end of file on communication channel

    One more + "select count (*) of colour_master@A_LINK" + subject immediately manages to return the correct number of records in the database so A 3113 is a bit misleading, I think that, in this case have crash, the database remains accessible at all times, there is no network problem (database A and B are both located in the same server so it of not like I'm trying of) connect to halfway around the globe).

    The only thing I can think is that there is a permissions issue causes this error. The creation of MV because is made via a link, it is not a problem of IAN see all appropriate, but once the updates come into play, it is perhaps.

    Any who can shed light on why I can't do the fast refresh from the view, I can create joyfully, please?

    I'm surprised no one asked you to do what is obvious: try to do a select * from colour_master@A_LINK, without that being wrapped in a create materialized MATERIALIZED view. Just do a simple select * from...

    My bet is that you will get an error ORA_22992 can not use selected from the remote tables LOB Locators . And if you can't do a simple select * in a remote table, I suspect that you can reasonably expect Fireworks when you try to create or refresh a view materialized on such a thing!

    Here's a quick test:

    In the 1 database:
    =========

    SQL> create table A (col1 varchar2(2), col2 clob);
    Table created.
    
    SQL> alter table A add constraint A1 primary key (col1);
    Table altered.
    
    SQL> insert into A values ('AA','This is an entry into a clob column');
    1 row created.
    
    SQL> commit;
    Commit complete.
    
    SQL> create materialized view log on A with primary key including new values;
    Materialized view log created.
    

    In the database 2
    =========

    SQL> connect ims_global/v0yager1@ussd
    Connected.
    
    SQL> create materialized view B refresh fast as
      2  select * from A@remotedb_link;
    
    Materialized view created.
    
    SQL> exec dbms_mview.refresh('B');
    BEGIN dbms_mview.refresh('B'); END;
    
    *
    ERROR at line 1:
    ORA-12008: error in materialized view refresh path
    ORA-02068: following severe error from REMOTEDB_LINK
    ORA-03113: end-of-file on communication channel
    ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2251
    ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2457
    ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2426
    ORA-06512: at line 1
    
    SQL> drop materialized view B;
    Materialized view dropped.
    
    SQL> create materialized view B refresh fast as
      2  select col1 from A@ims_link;
    
    Materialized view created.
    
    SQL> exec dbms_mview.refresh('B');
    PL/SQL procedure successfully completed.
    

    Which seems to reproduce your problem rather well, I think.

    I don't know if there is no work around for this. I mean, obviously you can't miss the CLOB column in your statement of 'create a MV' as I just did, but I don't know if you're still allowed or expected to be able to create a MV on lob columns and that such and such correction will allow you to do. Maybe someone else can provide this information.

    But at least you won't have to play Russian roulette with your init.ora parameters!

  • materialized view of the site / site of master

    Hello

    Currently I have an updatable materialized view and a main site.

    Whatever the changes bring to emp table of the main site that will be included in the emp materialized view in the view of the site.

    Whatever the changes bring to materialized view emp is also included in table emp from the main site.


    Right now, in my materialized view site, I have two jobs:
    defer_sys.push and dbms_refresh

    I would like to know the differences between the 2 posts...


    Can someone advise? Do I really need both jobs or only one of them will do?

    Range of jobs is important?

    Thank you

    Yes, you're right.

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