Difference between Materialised view in 10g and 11g

Hi,
I am beginner . I want to know the difference between Materialized view between 10g and 11g. Is there any impact if the materialized view used in 10g gets upgraded to 11g ?
awaiting ur response.Please and Thanks

In addition to the documentation, you might want to look at the blog of Alberto Dell'Era:
http://www.adellera.it/blog/
Alberto writes quite a bit about materialized views, including this important change in 11GR2:
http://www.adellera.it/blog/2009/11/03/11gr2-materialized-view-logs-changes/

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What is the difference between materialised view and normal view?

please expalin the difference in detail with an example.
thanks.

Hi User,
Welcome to Forum !!!!
Materialized view is nothing but a database Object similar to Tables,Indexes,Procedures etc.
It contains the results of a query.
The materialized view is refreshed when the query is executed. And are refreshed on demand
Unlike Views, it contain data.
It does not contain real-time data.
Materialized view are called Snapshot(In Older Versions of Oracle).
Thanks,
Shankar

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Hi All,
I am on 10.2 Standard edition and 11.1 Standard edition (2 databases in the application, one on 10g, another on 11g).
Being on standard edition, cannot use many common features e.g. partitioning, bitmap indexes etc.
I use to think that, partitioned view are no more supported by Oracle. But I can see that it works. I created 3 tables TEMP1, TEMP2 and TEMP3, all with exact same structure (columns and indices). Then created a view TEMP_VIEW, which is like
select col1, col2, col3 .... from temp1
union all
select col1, col2, col3 .... from temp2
union all
select col1, col2, col3 .... from temp3Here are the query execution and plans
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SQL> select * from temp_view where object_id=2620 and branch_cd = 'XYZ';
OWNER                          OBJECT_NAME                    SUBOBJECT_NAME                  OBJECT_ID DATA_OBJECT_ID
OBJECT_TYPE         CREATED   LAST_DDL_ TIMESTAMP           STATUS T G S BRANC
SYS                            LOADER_TRIGGER_INFO                                                 2620
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   5    2       TABLE ACCESS (BY INDEX ROWID) OF 'TEMP2' (TABLE) (Cost=2 Card=1 Bytes=132)
   6    5         INDEX (UNIQUE SCAN) OF 'TEMP2_PK' (INDEX (UNIQUE)) (Cost=1 Card=1)
   7    2       TABLE ACCESS (BY INDEX ROWID) OF 'TEMP3' (TABLE) (Cost=2 Card=1 Bytes=132)
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/* ----------------- 11g execution plan ----------------------- */
SQL> select * from temp_view where object_id=2620 and branch_cd = 'XYZ';
OWNER                          OBJECT_NAME                    SUBOBJECT_NAME                  OBJECT_ID DATA_OBJECT_ID
OBJECT_TYPE         CREATED   LAST_DDL_ TIMESTAMP           STATUS T G S BRANC
PUBLIC                         GV$XML_AUDIT_TRAIL                                                  2620
SYNONYM             16-NOV-09 16-NOV-09 2009-11-16:16:36:08 VALID   N N N XYZ
Elapsed: 00:00:00.03
Execution Plan
   0      SELECT STATEMENT Optimizer=ALL_ROWS (Cost=6 Card=3 Bytes=396)
   1    0   VIEW OF 'TEMP_VIEW' (VIEW) (Cost=6 Card=3 Bytes=396)
   2    1     UNION-ALL
   3    2       TABLE ACCESS (BY INDEX ROWID) OF 'TEMP1' (TABLE) (Cost=2 Card=1 Bytes=102)
   4    3         INDEX (UNIQUE SCAN) OF 'TEMP1_PK' (INDEX (UNIQUE)) (Cost=1 Card=1)
   5    2       TABLE ACCESS (BY INDEX ROWID) OF 'TEMP2' (TABLE) (Cost=2 Card=1 Bytes=102)
   6    5         INDEX (UNIQUE SCAN) OF 'TEMP2_PK' (INDEX (UNIQUE)) (Cost=1 Card=1)
   7    2       TABLE ACCESS (BY INDEX ROWID) OF 'TEMP3' (TABLE) (Cost=2 Card=1 Bytes=102)
   8    7         INDEX (UNIQUE SCAN) OF 'TEMP3_PK' (INDEX (UNIQUE)) (Cost=1 Card=1)Questions
1) I am expecting same behaviour on Oracle enterprise edition, will that be the case ?
2) On 10g, execution plan shows "UNION-ALL (PARTITION)", but on 11g it says, "UNION-ALL". What does that imply?
3) Which Oracle parameter can affect this behaviour? the old partition_view_enable parameter does not exist
4) If I go ahead and use this partitioned view, in which cases this can cause problems? At this point, it looks all good if I access the view using indexed columns (of the tables and all tables involved have exactly same indexes).
Thanks in advance

Billy Verreynne is an expert in this area and has been introducing people for years to 'partition views' and you can find many of his previous posts about how and when to use them (including example code) right here in these forums (most of them will be in the SQL and PL/SQL forum).
This feature has been around since Oracle 7 and the 7.3 document that details the info is still at
http://docs.oracle.com/cd/A57673_01/DOC/server/doc/A48506/partview.htm
Here is just one of his many other threads with more example code using five tables.
Table name in from clause

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Nimish Garg wrote:
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Please make us aware of any merits in going for 11g over 10g.
apps version 11.5.10.2
Regards

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Hi,
897293 wrote:
I want to know with example how to outer join three different tables in Oracle.The 3rd table comes into the result set the same way the 2nd one did:
FROM           table_1 t1
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http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/wnsql.htm#sthref5
Hoek,
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*10G:*
Connected to:
Oracle Database 10g Release 10.2.0.4.0 - Production
SQL> create table test_nvl (null_column number);
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1 row created.
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NULL_COLUMN
0
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Connected to:
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Thanks

BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE     11.2.0.2.0     Production
TNS for HPUX: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
CREATE TABLE test_nvl (null_column NUMBER);
INSERT INTO test_nvl
     VALUES (NULL);
COMMIT;
CREATE VIEW view_nvl
AS
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SELECT *
FROM view_nvl
WHERE null_column IS NOT NULL AND null_column = 0;
NULL_COLUMN
0

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# Fast-Start Failover for Maximum Performance Mode in a Data Guard Configuration
# Compression of Redo Traffic (Only for Gap Resolution) Over the Network in a Data Guard Configuration
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Part Number B28279-01
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Difference between Materialised view in 10g and 11g

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