materialized wiev fast refresh every minute

Similar Questions

• Materialized view fast refresh option

  Dear all,

  I have a vision materilized which refreshes every 5 minutes and his works well, but one of the base tables has 300 fields and I need this view refresh only when 3 of the fields of 300 has evolved.

  If anyone can help me, I understand that

  The script of my VM is:

  CREATE MATERIALIZED VIEW SCHEMA1. INVM_TARJETADEBITO_SALDOS_VM

  N OCACHE

  LOGGING

  NOCOMPRESS

  NOPARALLEL

  BUILD IMMEDIATE

  REFRESH FAST START WITH SYSDATE NEXT SYSDATE + 5/1440

  WITH THE PRIMARY KEY

  AS

  SELECT CHAMP_1, CHAMP_2, FIELD_3, FIELD_4

  OF SCHEMA1. TABLE_1 has, SCHEMA1. TABLE_2 b

  WHERE a.PK_1 = b.PK_1;

  Best regards

  Diego Nuñez

  > but one of the base tables has 300 fields and I need from this point of view, refresh only when 3 of the fields of 300 has evolved.

  You cannot set this "restriction".  If a row is updated - know if 1 single byte in a column or 300 columns are updated - the line qualifies to be propagated to the MV.

  That you can set is * that * columns are replicated in the MV.

  For the journal of MV, you can also specify which columns are referenced as columns of filter (with the WITH clause).  It is usually of the columns that use the MV and/or is the joining columns for a MV that has a join.

  Hemant K Collette

• Vista icons in windows Explorer refreshes every minute or so, how fix?

  Every minute or so icons start refreshing in Explorer. I tried increasing the icon hidden in the registry, the removal of "IconChache.db", all to nothing is (apart from reinstalling my OS). Whenever the icons updated performance decreases significantly. I ran antivirus (Avast free with Microsoft Security Essentials) scans, everything came without any problem. On another note, Explorer sometimes crashes when opening an image.

  Hello

  Have you tried system restore?

  If the system restore is not enough, you can create a new user account and check.
  To create a user account:
  a. to open user accounts, click the Start button, select Control Panel, click user accounts and parental controlsand then click user accounts.
  b. click Manage another account. If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.
  c. click on create a new account.
  d. type the name that you want to assign to the user account, click an account type, and then click create an account.
  For more information, visit the below mentioned link:
  http://Windows.Microsoft.com/en-us/Windows-Vista/create-a-user-account
  If the computer works well in the new user account, you may have corrupted profile.
  Here is the link totroulbleshoot a corrupted profile, you can follow the steps mentioned in the link.
  http://Windows.Microsoft.com/en-us/Windows-Vista/fix-a-corrupted-user-profile
   
   
   
   

• Materialized - view fast refresh connects

  I understand that there is a data change log maintained internally to fast refresh materialized view (CDC) Capture occurs.
  
  My question is, will this newspaper get purged once the changes are applied to a corresponding materialized view or it will persist with other changes is attached to it?
  
  What would be the size of the change log for 150 million documents covering 40 base tables?

  Sorry, I haven't used groups of refreshment MV.

• View materialized with fast refresh and CLOB

  People,

  I have a table named ABC in a database named D1. This table has a CLOB column named CLOBCOL.

  I'm trying to replicate ABC table in the database of D2 using dblink.

  So, I tried to create Materialized View ABCMV of database D2 using the dblink. But cannot create because of the CLOB data type.

  Yes, thought of creating discovered first in database D1 and then create Materialized View in the database D2.

  But, the problem is that if I do, then the materialized view cannot be "refresh quickly" because he has materialized view log. Now, as this materialized view is supposed to rest on the view to D1, where and how can I create materialized view log.

  Help, please.

  Hello

  How about this trick - don't know if you can change your table in the source?

  TEST@DEMODB > alter table test add col4 as (DBMS_LOB. SUBSTR (col3, 500, 1)) virtual;

  Modified table.

  Test2@DEMODB > create a materialized view rich quickly updated with rowid as select col1, col2, col4 test@demo;

  Materialized view created.

  TEST2@EETGRID >

  See you soon,.

  Rich

• 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.

• 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

• Failed to create the fast refresh on the materialized view

  Hi, I am creating a materialized on the tables with fast refresh view on commit but I get an error message.

  I have created the following logs:

  Bonus CREATE MATERIALIZED VIEW LOG ON
  Users TABLESPACE
  WITH THE PRIMARY KEY
  INCLUDING THE NEW VALUES

  Used to CREATE MATERIALIZED VIEW LOG ON
  Users TABLESPACE
  WITH THE PRIMARY KEY
  INCLUDING THE NEW VALUES

  I then try to create the following:

  Test.BAM CREATE MATERIALIZED VIEW

  IMMEDIATE CONSTRUCTION
  COOL OFF QUICKLY ON COMMIT
  AS
  SELECT a.dept_no, SUM (a.salary)
  EMPLOYEE a, b bonus
  WHERE a.employee_id = b.employee_id
  GROUP BY dept_no

  When I do that, I get the following error:

  . ORA-12032: cannot use column rowid of materialized

  view log on 'test '. "" BONUS ".

  If I change to a full refresh, it works pretty well. If I create a MV with a fast refresh on a query just within the limits of the table bonus it also works very well, for example ' select * bonus where employee_id = 2'

  What I am doing wrong? Also when looking at the notes for MV connects in some places, he said using the primary key and others, he says to the sequence of use and row_id. Which is correct and what difference does it make?

  11.2 aix.

  Thank you very much

  I suggest that investigate you the reason why your MV is not quickly updatable with the following method:

  (1) create MV_CAPABILITIES_TABLE with @?/rdbms/admin/utlxmv.sql

  (2) exec ('BAM') dbms_mview.explain_mview

  3)

  column format a100 msgtxt

  column related_text format a20

  SELECT the possible, capability_name, related_text,

  msgtxt

  OF mv_capabilities_table;

  That should tell you the reason why he isn't yet quickly updatable.

  There was a popular quote on men and fishing, but I don't remember it for now :-)

  Kind regards

  Uwe Hesse

• 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 conducive to fast refresh method

  In AWM when I select refresh FASTER method and select the materialized view, get the error below:
  "Quick Refresh method requires the materialized view logs and a complete refresh previously run the MV cube." I need this fast a cube materialized view refresh, so that it performs an incremental refresh and re-aggregation of only the changed lines in the source table.
  can someone help me on this?

  Remember to choose the 'Force' that runs fast if possible update, as otherwise it performs a complete refresh. You can also specify Complete as the Refresh method in the dialog box Assistant Maintenance first, you keep the cube.

  You'll need create materialized on all the base tables, view logs if you have not already done so, otherwise the cube will be able to do a fast refresh (differential).

• 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

• fast refresh on MATERIALIZED VIEW

  Oracle 10 g R2 (10.2.0.5)
  
  Scott.mv_test CREATE MATERIALIZED VIEW
  Users TABLESPACE
  NOCACHE
  LOGGING
  NOCOMPRESS
  NOPARALLEL
  IMMEDIATE CONSTRUCTION
  REFRESH THE STRENGTH TO DEMAND
  WITH THE PRIMARY KEY
  AS
  Select...
  
  I this MV, when I do the QUICK refersh as follows, I get the error message
  
  SQL > execute DBMS_MVIEW. REFRESH ('MV_TEST', 'f');
  DBMS_MVIEW BEGIN. REFRESH ('MV_TEST', 'f'); END;
  
  *
  ERROR on line 1:
  ORA-12004: QUICK COOLING can be used to view materialized "SCOTT." "" MV_TEST ".
  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
  
  But it works with full refresh.
  
  Is this planned, any help would be appreciated.
  
  Thank you

  ORA-12004: REFRESH FAST cannot be used for materialized view "string"."string"
  Cause:      The materialized view log does not exist or cannot be used. PCT refresh is also not enabled on the materialized view
  Action:      Use just REFRESH, which will reinstantiate the entire table. If a materialized view log exists and the form of the materialized view allows the use of a materialized view log or PCT refresh is possible after a given set of changes, REFRESH FAST will be available starting the next time the materialized view is refreshed.
  

  http://ORA-12004.ora-code.com/

• ORA-12052: is unable to fast refresh materialized view string.string

  Hello
  
  I try to create the same xx and xx, after creating a newspaper, I get this error. Follow my structure:
  

  create table PEDIDO
  (
    NR_PEDIDO        NUMBER not null,
    DESCRICAO_PEDIDO VARCHAR2(10)
  );
  
  alter table PEDIDO
    add constraint PEDIDO_PK primary key (NR_PEDIDO);
  
  create table ITEM_PEDIDO
  (
    NR_PEDIDO  NUMBER not null,
    NR_PRODUTO VARCHAR2(10) not null
  );
  alter table ITEM_PEDIDO
    add constraint ITEM_PK primary key (NR_PEDIDO, NR_PRODUTO);
  alter table ITEM_PEDIDO
    add constraint PEDIDO_ITEM_FK foreign key (NR_PEDIDO)
    references PEDIDO (NR_PEDIDO) on delete cascade;
  
  create index INDEX_ITEM_PEDIDO on ITEM_PEDIDO (NR_PEDIDO);
  
  insert into pedido
  values (1, 'A');
  
  insert into pedido
  values (2, 'B');
  
  insert into item_pedido
  values (1, 'X');
  
  insert into item_pedido
  values (1, 'Z');
  
  insert into item_pedido
  values (2, 'X');
  
  commit;

  When you try to create, I get the error ORA-12052:
  

  drop materialized view log on pedido;
  drop materialized view log on item_pedido;
  
  create materialized view log on pedido;
  create materialized view log on item_pedido;
  
  create materialized view mv_pedido_item
  refresh fast as
  select pe.nr_pedido, pe.descricao_pedido, ip.nr_produto
    from pedido pe, item_pedido ip where pe.nr_pedido = ip.nr_pedido;

  Oracle Database 10g Enterprise Edition Release 10.2.0.4.0

  Hello Luiz,

  Thank you for provding test cases.

  SQL> drop materialized view log on pedido;
  Materialized View log dropped.
  SQL> drop materialized view log on item_pedido;
  Materialized View log dropped.
  SQL> create materialized view log on pedido
    with rowid;
  Materialized View log created.
  SQL> create materialized view log on item_pedido
    with rowid;
  Materialized View log created.
  SQL> create materialized view mv_pedido_item
  refresh fast as
  select pe.nr_pedido, pe.descricao_pedido, ip.nr_produto, pe.rowid pe_rowid, ip.rowid ip_rowid
    from pedido pe, item_pedido ip where pe.nr_pedido = ip.nr_pedido;
  Materialized view created.
  
  BANNER
  --------------------------------------------------------------------------------
  Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
  1 row selected.
  

  Concerning
  Peter

• Fast refresh materialized views

  Hi all
  
  We have tables in the remote database and we created materialized views in our local database using the database but link to refresh these take a long time, so we can use fast refresh on these materialized views?
  
  Kind regards
  RAM

  Look at ATOMIC_REFRESH option, if you set this to FALSE, you can see the performance because it will use the path of DIRECT ACCESS and TRUNCATE. Data will be unavailable while being refreshed well.

  See you soon
  If

• 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!