Query using Materalized view in oracle 9i and 10g

Hello
There are snapshots (materialized view) used in my application. We have recently migrated from 9i to 10g release 2 database.
After migration i have observed explain plan of query which is using materialized view and i found in 9i oracle treating materalized view as table. In 10g oracle is considerting it as MVIEW only (MAT_VIEW ACCESS BY INDEX ROWID). However in 10g cost of query which is using materialized view is much higher than 9i. And execution time is also random.
Can anbody pls. expalin diff. of materalized view access in oracle 9i and 10g.
Thanks

can you post your query with explain plan for both 9i version and 10g version.
Thanks,
karthick.

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Materialize view on oracle 9i and oracle 10g

Hi,
My sql query using Materialized view in from cluase.
its execution time on oralce 9i 9.0.2 is only 0.25 sec but on oracle 10g it takes 4 minutes.
Explain plan in oracle 9i it consider MV as table but in Oracle 10g it consider it as MV.
i m analyze all the table before executing the query although it takes time to execute it
Please can anyone hv the idea how to decrease the execution time.
Thanks in advance.

This is my QUERY
SELECT pp.hhc_code hhc_code, descp.item_id lucode, pp.ctry_code country_code,
pp.co_code company_code, descp.hq_descp_txt description
FROM prod_descp_en descp,
(SELECT DISTINCT ctry_code, co_code, item_id, hhc_code
FROM prod_perf_xref
WHERE procs_revis_nbr <= 1493) pp
WHERE descp.ctry_code = pp.ctry_code
AND descp.co_code = pp.co_code
AND descp.item_id = pp.item_id
AND EXISTS (
SELECT 'X'
FROM (SELECT prod_nbr, case_seq_nbr, prod_ctry_code, prod_co_code
FROM ord_ship_ln
WHERE (ord_ctry_code,
ord_co_code,
ord_doc_nbr,
ord_sys_srce
) IN (
SELECT ord_ctry_code, ord_co_code, ord_doc_nbr,
ord_sys_srce
FROM oms.ord_ship_hdr hr1
WHERE ( ( hr1.acctg_dest_ctry = '119'
AND hr1.acctg_dest_co = '003'
AND hr1.acctg_dest_nbr = 131
AND hr1.acctg_dest_type = '02'
OR ( hr1.srce_ctry_code = '119'
AND hr1.srce_co_code = '003'
AND hr1.srce_loc_nbr = 131
AND hr1.srce_loc_type_code = '02'
))) ln1
WHERE descp.product_nbr = ln1.prod_nbr
AND descp.case_nbr = ln1.case_seq_nbr
AND descp.ctry_code = ln1.prod_ctry_code
AND descp.co_code = ln1.prod_co_code)
ORACLE -9i
Plan
SELECT STATEMENT CHOOSECost: 1,528 Bytes: 138 Cardinality: 1
     16 HASH JOIN Cost: 1,528 Bytes: 138 Cardinality: 1
          12 HASH JOIN SEMI Cost: 1,316 Bytes: 93 Cardinality: 1
               1 TABLE ACCESS FULL OMS.PROD_DESCP_EN Cost: 10 Bytes: 1,160,406 Cardinality: 20,358
               11 VIEW SYS.VW_SQ_1 Cost: 1,290 Bytes: 515,484 Cardinality: 14,319
                    10 NESTED LOOPS Cost: 1,290 Bytes: 1,317,348 Cardinality: 14,319
                         8 TABLE ACCESS BY INDEX ROWID OMS.ORD_SHIP_HDR Cost: 138 Bytes: 31,104 Cardinality: 576
                              7 BITMAP CONVERSION TO ROWIDS
                                   6 BITMAP OR
                                        3 BITMAP CONVERSION FROM ROWIDS
                                             2 INDEX RANGE SCAN NON-UNIQUE OMS.ORD_SHIP_HDR_DEST_IDX1 Cost: 1
                                        5 BITMAP CONVERSION FROM ROWIDS
                                             4 INDEX RANGE SCAN NON-UNIQUE OMS.ORD_SHIP_HDR_SRCE_INDX Cost: 1
                         9 INDEX RANGE SCAN UNIQUE OMS.PKORD_SHIPLN1 Cost: 2 Bytes: 950 Cardinality: 25
          15 VIEW OMS. Cost: 211 Bytes: 598,860 Cardinality: 13,308
               14 SORT UNIQUE Cost: 211 Bytes: 532,320 Cardinality: 13,308
                    13 TABLE ACCESS FULL MFIDATA.PROD_PERF_XREF_T Cost: 164 Bytes: 532,320 Cardinality: 13,308
ORACLE -10g
Plan
SELECT STATEMENT CHOOSECost: 7,538 Bytes: 138 Cardinality: 1
     19 HASH JOIN Cost: 7,538 Bytes: 138 Cardinality: 1
          12 HASH JOIN SEMI Cost: 6,851 Bytes: 93 Cardinality: 1
               1 MAT_VIEW ACCESS FULL MAT_VIEW OMS.PROD_DESCP_EN Cost: 32 Bytes: 1,132,305 Cardinality: 19,865
               11 VIEW VIEW SYS.VW_SQ_1 Cost: 6,612 Bytes: 2,585,376 Cardinality: 71,816
                    10 NESTED LOOPS Cost: 6,612 Bytes: 6,607,072 Cardinality: 71,816
                         8 TABLE ACCESS BY INDEX ROWID TABLE OMS.ORD_SHIP_HDR Cost: 805 Bytes: 156,114 Cardinality: 2,891
                              7 BITMAP CONVERSION TO ROWIDS
                                   6 BITMAP OR
                                        3 BITMAP CONVERSION FROM ROWIDS
                                             2 INDEX RANGE SCAN INDEX OMS.ORD_SHIP_HDR_SRCE_INDX Cost: 6
                                        5 BITMAP CONVERSION FROM ROWIDS
                                             4 INDEX RANGE SCAN INDEX OMS.ORD_SHIP_HDR_DEST_IDX1 Cost: 1
                         9 INDEX RANGE SCAN INDEX (UNIQUE) OMS.PKORD_SHIPLN1 Cost: 2 Bytes: 950 Cardinality: 25
          18 VIEW OMS. Cost: 685 Bytes: 1,154,925 Cardinality: 25,665
               17 HASH UNIQUE Cost: 685 Bytes: 1,026,600 Cardinality: 25,665
                    16 VIEW VIEW MFIDATA.index$_join$_007 Cost: 511 Bytes: 1,026,600 Cardinality: 25,665
                         15 HASH JOIN
                              13 INDEX RANGE SCAN INDEX MFIDATA.IDX_PROD_PERF_XREF_ROW_DELT Cost: 419 Bytes: 1,026,600 Cardinality: 25,665
                              14 INDEX FAST FULL SCAN INDEX (UNIQUE) MFIDATA.IND_PROD_PERF_XREF_INDEX1 Cost: 309 Bytes: 1,026,600 Cardinality: 25,665

Oracle 9i and 10g in one computer

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http://www.ddbcinc.com/askDDBC

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What is the reason?
>>>>>>>>>>>>>>>>>>>>>
SQL> create table t ( a number, b number);
Table created.
SQL> insert into t values (1,2);
1 row created.
SQL> insert into t values (100, 200);
1 row created.
SQL> insert into t values (10, 20);
1 row created.
>>>>>>>>>
9i
>>>>>>>>>
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SUM(B) A
2 1
20 10
200 100
>>>>>>>>>
10g
>>>>>>>>>
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SUM(B) A
2 1
200 100
20 10

in oracle "group by" doesn't sort. Not strictly true.
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;)

At least 6 differences between Oracle 9i and 10g with complete understan

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cheers

Hi,
Forum thread already opened by you
check what is the major difference between 9i and 10g
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>
how SMON coalesces free space in oracle 9i and 10g?
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HTH.
Paul...
Software - OS (+ version), Server,
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Please include all of the above information with database queries.
This will help those who are trying to help you!
Furthermore, please do not top-post and do try to trim your replies!

Issue with .profile for oracle 9i and 10g

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Can we locate oracle 9i and 10g databases in same PC

hi all
wish U happy new year...
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regards
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when I was trying to up the database it is looking for another listener
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http://www.asagarwal.com

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Dear Members
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2.Left Outer Join
3.Right Outer Join
4.Self Join
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Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

What is major difference between oracle 9i and 10g

hi ,
I hv read some documentation of oracle 9i and 10g ,but i dont understand what is major difference between oracle 9i and 10g .

Its not the difference, but its the additional feaures.
There are many more feature in every aspect of database. which area are you specifically looking for..
I would reccomned a following doc on OTN
Oracle® Database New Features Guide 10g Release 2 (10.2)

What is difference between oracle 9i and 10g?

Hi All,
please explain difference between oracle 9i and 10g with example.
your suggestion would be greatly appreciated.

user13842301 wrote:
Hi All,
please explain difference between oracle 9i and 10g with example.
your suggestion would be greatly appreciated.One letter and one number :)
But seriously, they document this stuff (way too much to write in a forum reply).
For 10.1
http://download.oracle.com/docs/cd/B14117_01/server.101/b10750/toc.htm
and for the more popular 10.2
http://download.oracle.com/docs/cd/B19306_01/server.102/b14214/toc.htm

Diffrence between oracle 9i and 10g

i want to know what is the main difference between oracle 9i and 10g?

nmohapatra87 wrote:
i want to know what is the main difference between oracle 9i and 10g?You will get top new features in 10g as compared to 9i below
http://www.oracle-base.com/articles/10g/articles-10g.php
http://docs.oracle.com/cd/B19306_01/server.102/b14214/chapter1.htm
http://www.oracle.com/technetwork/articles/sql/index-082320.html

Query using Materalized view in oracle 9i and 10g

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