Updateable Materialized View

Hi Folks,
I have Database A and Database B. Would like to create the updateable Materialized view A1 in database B based on the master table database A i.e table Ax. I have created the the updateable materialized view using the following script.
CREATE MATERIALIZED VIEW TRDB.DIAGNOSTIC_TEST_DETAILS
TABLESPACE TRDB_DATA
NOCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
BUILD IMMEDIATE
USING INDEX
TABLESPACE MISC
REFRESH FAST ON DEMAND
WITH PRIMARY KEY
FOR UPDATE
AS
SELECT "DIAGNOSTIC_TEST_DETAILS"."TESTID" "TESTID","DIAGNOSTIC_TEST_DETAILS"."TARRID" "TARRID","DIAGNOSTIC_TEST_DETAILS"."TADDS_RCVD_TIME" "TADDS_RCVD_TIME","DIAGNOSTIC_TEST_DETAILS"."TESTCATEGORY" "TESTCATEGORY","DIAGNOSTIC_TEST_DETAILS"."TESTCONDUCTORUSER" "TESTCONDUCTORUSER","DIAGNOSTIC_TEST_DETAILS"."TESTCONDUCTORSPGROUP" "TESTCONDUCTORSPGROUP","DIAGNOSTIC_TEST_DETAILS"."MORT" "MORT","DIAGNOSTIC_TEST_DETAILS"."TESTALGVERSION" "TESTALGVERSION","DIAGNOSTIC_TEST_DETAILS"."FAULTTYPE" "FAULTTYPE","DIAGNOSTIC_TEST_DETAILS"."TESTCLIENTID" "TESTCLIENTID","DIAGNOSTIC_TEST_DETAILS"."INTRUSIONCONSENT" "INTRUSIONCONSENT","DIAGNOSTIC_TEST_DETAILS"."INVOKEID" "INVOKEID","DIAGNOSTIC_TEST_DETAILS"."TESTCONTEXT" "TESTCONTEXT","DIAGNOSTIC_TEST_DETAILS"."DIRECTORYNUMBER" "DIRECTORYNUMBER","DIAGNOSTIC_TEST_DETAILS"."PBXLINENUMBER" "PBXLINENUMBER","DIAGNOSTIC_TEST_DETAILS"."SERVICEID" "SERVICEID","DIAGNOSTIC_TEST_DETAILS"."TECHMARKER" "TECHMARKER","DIAGNOSTIC_TEST_DETAILS"."NTETYPE" "NTETYPE","DIAGNOSTIC_TEST_DETAILS"."CSSID" "CSSID","DIAGNOSTIC_TEST_DETAILS"."NNI" "NNI","DIAGNOSTIC_TEST_DETAILS"."EQPTNO" "EQPTNO","DIAGNOSTIC_TEST_DETAILS"."FIELDBUILDID" "FIELDBUILDID","DIAGNOSTIC_TEST_DETAILS"."TAMID" "TAMID","DIAGNOSTIC_TEST_DETAILS"."TAMLINEPORTID" "TAMLINEPORTID","DIAGNOSTIC_TEST_DETAILS"."TESTDN" "TESTDN","DIAGNOSTIC_TEST_DETAILS"."TDNNNI" "TDNNNI","DIAGNOSTIC_TEST_DETAILS"."TDNEQPTNO" "TDNEQPTNO","DIAGNOSTIC_TEST_DETAILS"."ERRORCODE" "ERRORCODE","DIAGNOSTIC_TEST_DETAILS"."ERRORTEXT" "ERRORTEXT","DIAGNOSTIC_TEST_DETAILS"."TESTOUTCOME" "TESTOUTCOME","DIAGNOSTIC_TEST_DETAILS"."TESTSTARTTIME" "TESTSTARTTIME","DIAGNOSTIC_TEST_DETAILS"."TESTDURATION" "TESTDURATION","DIAGNOSTIC_TEST_DETAILS"."MFL" "MFL","DIAGNOSTIC_TEST_DETAILS"."LINESIGNATURECODE" "LINESIGNATURECODE","DIAGNOSTIC_TEST_DETAILS"."LINESIGNATURETEXT" "LINESIGNATURETEXT","DIAGNOSTIC_TEST_DETAILS"."TERMFLAG" "TERMFLAG","DIAGNOSTIC_TEST_DETAILS"."TERMINATIONCODE" "TERMINATIONCODE","DIAGNOSTIC_TEST_DETAILS"."TERMINATIONTEXT" "TERMINATIONTEXT","DIAGNOSTIC_TEST_DETAILS"."FAULTSTATEMENTCODE" "FAULTSTATEMENTCODE","DIAGNOSTIC_TEST_DETAILS"."FAULTSTATEMENTTEXT" "FAULTSTATEMENTTEXT","DIAGNOSTIC_TEST_DETAILS"."DISTANCETOFAULT" "DISTANCETOFAULT","DIAGNOSTIC_TEST_DETAILS"."CABLELENGTH" "CABLELENGTH","DIAGNOSTIC_TEST_DETAILS"."ACVOLTAGEAETH" "ACVOLTAGEAETH","DIAGNOSTIC_TEST_DETAILS"."ACVOLTAGEBETH" "ACVOLTAGEBETH","DIAGNOSTIC_TEST_DETAILS"."ACVOLTAGEAB" "ACVOLTAGEAB","DIAGNOSTIC_TEST_DETAILS"."DCVOLTAGEAETH" "DCVOLTAGEAETH","DIAGNOSTIC_TEST_DETAILS"."DCVOLTAGEBETH" "DCVOLTAGEBETH","DIAGNOSTIC_TEST_DETAILS"."DCVOLTAGEBA" "DCVOLTAGEBA","DIAGNOSTIC_TEST_DETAILS"."DCCURRENTAB" "DCCURRENTAB","DIAGNOSTIC_TEST_DETAILS"."DCCURRENTBA" "DCCURRENTBA","DIAGNOSTIC_TEST_DETAILS"."RESAETH" "RESAETH","DIAGNOSTIC_TEST_DETAILS"."RESBETH" "RESBETH","DIAGNOSTIC_TEST_DETAILS"."RESAB" "RESAB","DIAGNOSTIC_TEST_DETAILS"."RESBA" "RESBA","DIAGNOSTIC_TEST_DETAILS"."RESABATT" "RESABATT","DIAGNOSTIC_TEST_DETAILS"."RESBBATT" "RESBBATT","DIAGNOSTIC_TEST_DETAILS"."CAPAETH" "CAPAETH","DIAGNOSTIC_TEST_DETAILS"."CAPBETH" "CAPBETH","DIAGNOSTIC_TEST_DETAILS"."CAPAB" "CAPAB","DIAGNOSTIC_TEST_DETAILS"."CAPBALANCE" "CAPBALANCE","DIAGNOSTIC_TEST_DETAILS"."EXCHBATT" "EXCHBATT","DIAGNOSTIC_TEST_DETAILS"."SQIL" "SQIL","DIAGNOSTIC_TEST_DETAILS"."SQREASON" "SQREASON","DIAGNOSTIC_TEST_DETAILS"."SQCOLOUR" "SQCOLOUR","DIAGNOSTIC_TEST_DETAILS"."BUSINESSFUNCTION" "BUSINESSFUNCTION","DIAGNOSTIC_TEST_DETAILS"."FAULTJOBREF" "FAULTJOBREF","DIAGNOSTIC_TEST_DETAILS"."PUSHBACKINDICATOR" "PUSHBACKINDICATOR" FROM "DIAGNOSTIC_TEST_DETAILS"@MASTER.NAT.BT.COM "DIAGNOSTIC_TEST_DETAILS";
Now when i am trying to update the rows from matrialized view, how the rows should get synchronized with the master table. Can any one help me for getting synchronized with master site from masterialized view site.
Thanks & Regards,
vj

OK, so you want to configure multi-master replication then, right?
What version of 10g-- 10.1.0.x or 10.2.0.x (the 4 digit version number may be useful here). What edition-- multi-master replication is only available in the enterprise edition.
If you are trying to set up a multi-master replication environment, I would strongly suggest that you read through the [Advanced Replication Guide|http://download.oracle.com/docs/cd/B19306_01/server.102/b14226/toc.htm] at least once cover to cover. Are you trying to use the replication management API to instantiate the replication environment? Or are you trying to use the Replication Management Tool in Enterprise Manager?
Justin

Similar Messages

Is it possible to refresh the table from a Materialized view

Hi,
Is it possible to update the underlying table on which a Materialized view is created when some changes in a Materialized view is done.Is this reverse compatibility possible in Materialized View?
Thanks in Advance,
V.Dennis

If you created the materialized view as UPDATEABLE then changes to it should automatically be relected in the underlying table. If this is not occurring I suggest you check the replication jobs. You probably have a stack of errors in DEFERROR.
Cheers, APC

Materialized view in Oracle 9i/10g SE?

Hi All,
Can we define MV's in standard edition of oracle9i & 10g database? If yes, are there any limitations on creation of MV's in Standard edition compare to Enterprise edition like Query rewrite, creation of log tables etc?
As per link : http://www.dba-oracle.com/art_so_oracle_standard_enterprise_edition.htm , MV's seems to be avialable in EE.
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Thanks in advance,
AJ

As far as I'm aware, you can create MV in standard and also there is no limitation that I'm aware off
Standard and Enterprise Edition
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\- transaction based
- row-level
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- DML replication only
- database 7 / 8.0 / 8i / 9i / 10g
Variants:
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- database 7 / 8.0 / 8i / 9i / 10g
- Enterprise Edition only
Variants:
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2. row-level synchronous replication
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\- (redo) log based
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- database 9i / 10g (10g has Down Streams Capture)

Materialized View UNION different tables 10g.

I am trying to create a materialized view from 2 different tables. According the documentation for 10G it should be available.
Here is my script.
DROP MATERIALIZED VIEW PERSON_MV_T16;
CREATE MATERIALIZED VIEW PERSON_MV_T16 refresh complete on demand
AS
SELECT
CAST(P.MARKER AS VARCHAR2(4)) AS MARKER,
P.ROWID P_ROW_ID,
CAST(P.ACTIVE_IND_DT AS DATE) AS ACTIVE_IND_DT
FROM PERSON_ORGS_APEX_MV P
UNION
SELECT
CAST(P.MARKER AS VARCHAR2(4)) AS MARKER,
P.ROWID P_ROW_ID,
CAST(P.ACTIVE_IND_DT AS DATE) AS ACTIVE_IND_DT
FROM PERSON_ORGS_APVX_MV P
delete from mv_capabilities_table;
begin
dbms_mview.explain_mview('PEOPLE.PERSON_MV_T16');
end;
select *
from mv_capabilities_table where capability_name not like '%PCT%' and capability_name = 'REFRESH_FAST_AFTER_INSERT';
I get the following error.
CAPABILITY_NAME = REFRESH_FAST_AFTER_INSERT
POSSIBLE = N
MSGTEXT = tables must be identical across the UNION operator
I wrapped them in CAST operations just to be sure they are the same type and size.

As far as I'm aware, you can create MV in standard and also there is no limitation that I'm aware off
Standard and Enterprise Edition
A. Basic replication (MV replication)
\- transaction based
- row-level
- asynchronous from master table to MV (Materialized View)
- DML replication only
- database 7 / 8.0 / 8i / 9i / 10g
Variants:
1. Read-only MV replication
2. Updateable MV replication:
2.1 asynchronous from MV to master
2.2 synchronous from MV to master
3. Writeable MV replication
Enterprise Edition only
B. Multimaster replication
\- transaction based
- row-level or procedural
- asynchronous or synchronous
- DML and DDL replication
- database 7 / 8.0 / 8i / 9i / 10g
- Enterprise Edition only
Variants:
1. row-level asynchronous replication
2. row-level synchronous replication
3. procedural asynchronous replication
4. procedural synchronous replication
C. Streams replication
(Standard Edition 10g can execute Apply process)
\- (redo) log based
- row-level
- asynchronous
- DML and DDL replication
- database 9i / 10g (10g has Down Streams Capture)

Moving data from Materialized View to downstream application

Database Version: 9i Release 2
I've created a Materialized View on a base table, the purpose of which is to capture data changes to send to a downstream application
(I've been advizsed to avoid using Streams for now until we upgrade to 10g)
I need to either:
a) Make that data available for another process to pick up and have knowledge of what it needs to pick up versus what it has already picked up
or
b) Send/Update a table or MV at a downstream MS SQL Server database (resides within our firewall)
Some notes/questions
I cannot change the structure of the underlying base table
On the MV I could capture a date-time which records each time a record is touched on the base table, the problem is that many of these updates are “meaningless” and I should not send such updates downstream
1.Is there a way I can timestamp/flag the records as they get inserted/updated on the MV? (potentially used by the pickup process to identify what it needs to pick up)
2. If I flag the records e.g. “needs pickup” – would it be ok to make the MV updateable so the process can then mark the records as “picked up”. Performance?
3. Can I create a trigger on the MV to write records to a secondary table as they are inserted/updated on the MV?
4. Could I use the MV log tables MLOG$ to help me in any way?
I’m guessing there is no way to do the following but:
5. Is there a way to include a column on a Materialized View but ignore it in terms of capturing changes. e.g. I have columns a,b,c,d,e on my base table, I want to include a,b,c in my Materialized View but I only want my MV to be updated if a or b is updated on base table. If only column c is updated do not send any update to MV
Many thanks for any insight

Yes I do have a unique identifier on each record in the base table and therefore also in the MV.
So now the Downstream application has to update some of its own database tables based on what is in the MV that I provide - just so I understand how would that work e.g.:
1. MV gets refreshed from my base table every minute
2. Some records are newly inserted and some simply updated
and this is the part I don't understand (I might be missing something obvious)....
3. Downstream application interrogates the MV every (say 1-2 minutes) and updates its own tables based on the data there.....but let's say MV contains 10,000 records and in the last minute 100 of those records have been updated and another 100 inserted - how will it know the 200 records it needs to pull?
Thanks again

What is the difference between view and materialized views

Hi
What is the difference between view and materialized view ? can we update the base table using views

can we update the base table using viewsYes:
VIEWS
1. an updatable view is one that lets you perform DML on the underlying table
(see Oracle Database Concepts 10g - 5 Schema Objects)
2. non-updatable view requires INSTEAD OF Triggers
(see Oracle Database Concepts 10g - 22 Triggers)
SNAPSHOTS
You can have updateable (and writeable) snapshots - in updateable (writeable) MV replication.
Oracle uses snapshots (Materialized Views - MV) for two different purposes:
1. replication
2. automated Query Rewrite facility (first introduced in Oracle Discoverer, later included in Oracle database 8i).
Replication types in Oracle are:
a) Basic replication (MV replication)
- transaction based
- row-level
- asynchronous from master table to MV (Materialized View)
- DML replication only
- database 7 / 8.0 / 8i / 9i / 10g
- Standard and Enterprise Edition
1. Read-only MV replication
2. Updateable MV replication:
2.1 asynchronous from MV to master
2.2 synchronous from MV to master
3. Writeable MV replication
b) Multimaster replication
- transaction based
- row-level or procedural
- asynchronous or synchronous
- DML and DDL replication
- database 7 / 8.0 / 8i / 9i / 10g
- Enterprise Edition only
1. row-level asynchronous replication
2. row-level synchronous replication
3. procedural asynchronous replication
4. procedural synchronous replication
c) Streams replication
- (redo) log based
- row-level
- asynchronous
- DML and DDL replication
- database 9i / 10g (10g has Down Streams Capture)
- Enterprise Edition only (Standard Edition 10g can execute Apply process)
Regards,
Zlatko Sirotic

Refresh/Update data in a materialized view

Hi,
I have question about the data in a materialized view and how it is refreshed. My mat view has all my dimension-ids and my (for my specialize needs) aggregated measures from my fact table. I used the mat view wizard to create my view - which works perfectly. But now I wonder if I have to create some sort of mapping(?) or some sort of trigger to refresh the data in the mat view. Or is the data automatically refreshed when I start my fact table mappings. I use OWB 11gR2
thx

MVs have properties for refresh - you an refresh based on schedules or when dependent data is committed or manually.
Cheers
David

How can I fast refresh the materialized view !!

I created a MV base on some tables in order to improve the querey speed.
but the mv I have created falied to refresh fast.
because there are two same table in the from clause:
jcdm jc1,jcdm jc2
create materialized view temp_mv
nologging
pctfree 0
storage (initial 2048k next 2048k pctincrease 0)
parallel
build immediate
refresh force
on demand
as
select
TAB_GSHX.rowid hx_rid,
TAB_GSHD.rowid hd_rid ,
JC1.rowid jc1_rid ,
JC2.rowid jc2_rid ,
YSHD_ID     HXID,
JC1.JCDM     QFD,
JC2.JCDM     JLD
FROM
TAB_GSHX,
TAB_GSHD,
jCDM JC1,
JCDM JC2
WHERE
YSHD_ID=YSHX_ID
AND YSHD_QFD=JC1.JBJC_ID
AND YSHD_JLD=JC2.JBJC_ID
AND TO_CHAR(YSHX_time,'YYYYMMDD')='20030101'
the column msgtxt of the table MV_CAPABILITIES_TABLE is :
"the multiple instances of the same table or view" and " one or more joins present in mv".
How can I succeed in fast refresh the above temp_mv!!!
thanks.

lianjun,
When you are using Oracle9i there is a procedure which can help you setup the materialized view. If some option isn't working it gives you hint why it doesn't work.
The procedure is dbms_mview.explain_mview.
Take a look at the documentation how to use it. (In the Oracle9i DWH guide the package is explained.)
Hope this helps
With kind regards,
Bas Roelands

How to get Materialized View to ignore unused columns in source table

When updating a column in a source table, records are generated in the corresponding materialized view log table. This happens even if the column being updated is not used in any MV that references the source table. That could be OK, so long as those updates are ignored. However they are not ignored, so when the MV is fast refreshed, I find it can take over a minute, even though no changes are required or made. Is there some way of configuring the materialized view log such that the materialized view refresh ignores these updates ?
So for examle if I have table TEST:
CREATE table test (
d_id NUMBER(10) PRIMARY KEY,
d_name VARCHAR2(100),
d_desc VARCHAR2(256)
This has an MV log MLOG$_TEST:
CREATE MATERIALIZED VIEW LOG ON TEST with rowid, sequence, primary key;
CREATE MATERIALIZED VIEW test_mv
refresh fast on demand
as
select d_id, d_name
from test;
INSERT 200,000 records
exec dbms_mview.refresh('TEST_MV','f');
update test set d_desc = upper(d_desc) ;
exec dbms_mview.refresh('TEST_MV','f'); -- This takes 37 seconds, yet no changes are required.
Oracle 10g/11g

I would love to hear a positive answer to this question - I have the exact same issue :-)
In the "old" days (version 8 I think it was) populating the materialized view logs was done by Oracle auto-creating triggers on the base table. A "trick" could then make that trigger become "FOR UPDATE OF <used_column_list>". Now-a-days it has been internalized so such "triggers" are not visible and modifiable by us mere mortals.
I have not found a way to explicitly tell Oracle "only populate MV log for updates of these columns." I think the underlying reason is that the MV log potentially could be used for several different materialized views at possibly several different target databases. So to be safe that the MV log can be used for any MV created in the future - Oracle always populates MV log at any update (I think.)
One way around the problem is to migrate to STREAMS replication rather than materialized views - but it seems to me like swatting a fly with a bowling ball...
One thing to be aware of: Once the MV log has been "bloated" with a lot of unneccessary logging, you may perhaps see that all your FAST REFRESHes afterwards becomes slow - even after the one that checked all the 200000 unneccessary updates. We have seen that it can happen that Oracle decides on full table scanning the MV log when it does a fast refresh - which usually makes sense. But after a "bloat" has happened, the high water mark of the MV log is now unnaturally high, which can make the full table scan slow by scanning a lot of empty blocks.
We have a nightly job that checks each MV log if it is empty. If it is empty, it locks the MV log and locks the base table, checks for emptiness again, and truncates the MV log if it is still empty, before finally unlocking the tables. That way if an update during the day has happened to bloat the MV log, all the empty space in the MV log will be reclaimed at night.
But I hope someone can answer both you and me with a better solution ;-)

Materialized View to run only once in a year...

Hi everybody...
I want to create a materialized view which will run only once in a year and specifically some minutes after 00:00 a.m. on new year's day,
so i created the following:
CREATE MATERIALIZED VIEW <mv_name>
BUILD IMMEDIATE
REFRESH START WITH TO_DATE('01/01/2007 00:15:00','DD/MM/RRRR HH24:MI:SS')
NEXT SYSDATE+366
I have two notes:
1) how to declare the refresh to be done the first new year's day after the day it'll be created , i mean not static date (01/01/2007)
2)some years are leap and some are not , so in order to run every new year's day how should i transform the above..????
3)is there any view which displays the next run of a materialized view..???
the view DBA_MV_REFRESH_TIMES displays the last refresh of mv's...
I use Oracle 10.2.0.1 on XP ...
Thanks , a lot
Simon

1).
use the expression that evaluates to next january first.
SQL> select sysdate, add_months(trunc(sysdate, 'yyyy'), 12) from dual ;
SYSDATE ADD_MONTHS(
19-JUN-2006 01-JAN-2007
1 row selected.
SQL>2). for this also use the same expression that will evaluate to the january first of the year after that.

The data of my materialized view....in the while

Hello
We have problems with materialized views
We have one wich re-build each a short period of time
¿Can i avoid the data to dissapear in the time process of refresh?
Is so annoing to our clients to see that "from time to time" the data just dissapear for one period of time -the time while the materialized view is refreshing-
Thank you in advance
Bruno. Madrid. Spain

> Is so annoing to our clients to see that "from time to time" the data just dissapear for
one period of time -the time while the materialized view is refreshing-
Have a similar problem. And dealing with large data volumes that makes the DELETE of the MV a very undesirable feature. Not as much a the resource footprint required, but the time it takes to do this - and the very tight processing windows that exist.
The solution is a self-rolled and very likely not ideal for most - but it works well enough for us in production.
No MV. Create a partition table. Create a staging table. Do a manual "full refresh" of the staging table (TRUNCATE and direct path INSERT). Follow this by a partition exchange with the partition table (no validation and including indexes). The result is that the data is replaced in the partitioned table within a second - no long running and expensive DELETE. End-users not effected by having a truncate pulling the data from beneath their reports.

Exporting data from a materialized view in Oracle 10g

Can anybody tell me how to export data to a remote server and import data in that remote server without using ftp utility. Actually I want to export the data from a materialized view to the remote server and import the same in the remote server.
If everything works well, I'll put the exporting and importing in a cronjob.
Please let me know how can I do that if that's possible .
Any reply would be appreciated.
Thanks.

Here is what I'm trying to do.
I created materialized views using multiple base tables in my local server and the base tables got populated using a long process.
Now I want to copy those data alone to some remote server since it doesn't have any base tables in it. For now, the remote server should depends on the localserver's data. I'm going to use the remote server's data for some testing purposes.
I know it is easy to create mat.views in the remote server but it doesn't have I don't want to do that now. I just want to copy the snapshots from my local server to the remote server.
Please let me know how to do that.
Thanks.

Issue with creation of a materialized view

Hi,
I have a SQL query that works fine.
But when I create a materialized view using the query, a few columns in the MV do not get populated at all.
What could be the issue here?
regards
Prem

Hi,
Thanks for the reply. Here is the code.
CREATE MATERIALIZED VIEW EDW.MV_OPPTY_ACTIVITY_AGG
TABLESPACE EDW_DIM_DAT
NOCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
BUILD IMMEDIATE
REFRESH COMPLETE ON DEMAND
WITH PRIMARY KEY
AS
select
OPPTY_ID OPPTY_ID,
OPPORTUNITY_KEY OPPORTUNITY_KEY,
oppty_number oppty_number ,
SALES_CONSULTANT_HIST_KEY SALES_CONSULTANT_HIST_KEY ,
company_add_source_key company_add_source_key,
SALES_CONSULTANT_ID SALES_CONSULTANT_ID,
ACTIVITY_TYPE ACTIVITY_TYPE ,
activity_DATE activity_DATE ,
LAST_MODIFIED_DATE LAST_MODIFIED_DATE ,
CUSTOMER_FLAG CUSTOMER_FLAG,
SALES_EMPLOYEE_HIST_KEY,
milestone_KEY,
oppty_milestone_name_hist stage_name,
oppty_milestone_id_hist stage_id,
milestone_prob prob_to_close,
start_date oppty_start_date,
oppty_close_date oppty_close_date,
end_date oppty_end_date,
sum(DURATION) TOTAL_DURATION,
sum (CASE WHEN ACTIVITY_type IN ('CU14', 'CU15', 'CU16', 'CU17',
'CU18', 'CU19', 'CU20', 'CU21') THEN DURATION ELSE 0 END ) CQM_DURATION,
sum (CASE WHEN ACTIVITY_type = 'CU01' THEN DURATION ELSE 0 END ) TRADE_SEM_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU02' THEN DURATION ELSE 0 END ) RFP_RFI_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU03' THEN DURATION ELSE 0 END ) INFO_GATH_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU04' THEN DURATION ELSE 0 END ) PREP_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU05' THEN DURATION ELSE 0 END ) PRES_DEMO_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU06' THEN DURATION ELSE 0 END ) POC_DURATION,
sum ( CASE WHEN ACTIVITY_type = 'CU07' THEN DURATION ELSE 0 END ) PRE_CUST_SUPP_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU08' THEN DURATION ELSE 0 END ) POST_CUST_SUPP_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU09' THEN DURATION ELSE 0 END ) PARTNER_SUPP_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU10' THEN DURATION ELSE 0 END ) TRAVEL_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU11' THEN DURATION ELSE 0 END ) KEYCODES_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU12' THEN DURATION ELSE 0 END ) SI_SUPP_DURATION,
sum ( CASE WHEN ACTIVITY_type = 'CU13' THEN DURATION ELSE 0 END ) CHANNEL_SUPP_DURATION,
sum( CASE WHEN ACTIVITY_type = 'CU23' THEN DURATION ELSE 0 END ) MIGRATION_DURATION ,
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MAX(LICENSE_LOCAL) LICENSE_LOCAL,
MAX(maintAINANCE_usd) maintAINANCE_usd,
MAX(maintAINANCE_LOCAL) maintAINANCE_LOCAL,
MAX(TRAINING_USD) training_usd,
MAX(TRAINING_LOCAL) training_LOCAL,
MAX(CONSULTING_USD) consulting_usd,
MAX(CONSULTING_LOCAL) consulting_LOCAL,
MAX(RENEWALS_USD) renewals_usd ,
MAX(RENEWAL_local) RENEWAL_local,
max(LOBANALYTICS2_LOCAL) epm_local,
max(LOBDATAINTEGRATION2_LOCAL) eim_local,
max(IDD_AMOUNT_LOCAL) idd_local,
max(ONDEMAND_AMOUNT_LOCAL) ondemand_local,
max(LOBANALYTICS2_usd) epm_usd,
max(LOBDATAINTEGRATION2_usd) eim_usd,
max(IDD_AMOUNT_usd) idd_usd,
max(ONDEMAND_AMOUNT_usd) ondemand_usd
FROM edw.sales_consulting_activity_fct t1 ,
select
o.oppty_id_number,
o.oppty_id,
O.OPPORTUNITY_KEY,
LICENSE_USD LICENSE_USD ,
LICENSE_LOCAL LICENSE_LOCAL,
o.FYM_USD maintAINANCE_usd,
o.FYM_LOCAL maintAINANCE_LOCAL,
o.TRAINING_USD training_usd,
o.TRAINING_LOCAL training_LOCAL,
o.CONSULTING_USD consulting_usd,
o.CONSULTING_LOCAL consulting_LOCAL,
o.RENEWAL_USD renewals_usd ,
o.RENEWAL_local RENEWAL_local ,
o.LOBANALYTICS2_LOCAL,
o.LOBANALYTICS2_usd,
o.LOBDATAINTEGRATION2_LOCAL,
o.IDD_AMOUNT_LOCAL,
o.ONDEMAND_AMOUNT_LOCAL,
o.LOBDATAINTEGRATION2_usd,
o.IDD_AMOUNT_usd,
o.ONDEMAND_AMOUNT_usd
from edw.opportunity_hist_fact o
where o.SOURCE_SYSTEM='SFDC'
and upper(status)='ACTIVE'
and o.last_modified_date = (select max(last_modified_date )from edw.opportunity_hist_fact o2 where o.opportunity_key = o2.opportunity_key))T2,
( Select activity_key,OPPTY_ID_NUMBER, MIL.milestone_KEY,MIL.milestone_name oppty_milestone_name_hist,milestone_id
oppty_milestone_id_hist, milestone_prob,start_date,oppty_close_date,end_date FROM
EDW.opportunity_hist_fact OPP,
edw.milestone MIL,
edw.sales_consulting_activity_fct act WHERE
ACTIVITY_DATE >=start_date (+) and activity_date <=opp.last_modified_date(+)
and OPP.OPPTY_ID_NUMBER (+) =act.OPPTY_NUMBER
and OPP.milestone_key =MIL.milestone_key(+) ) T3
where t1.oppty_NUMBER (+) =T2.OPPTY_ID_NUMBER
and t1.activity_key=t3.activity_key
--and oppty_number ='279749'
GROUP BY OPPTY_ID,
oppty_number,
OPPORTUNITY_KEY,
SALES_CONSULTANT_HIST_KEY ,
company_add_source_key,
SALES_CONSULTANT_ID,
SALES_EMPLOYEE_HIST_KEY,
ACTIVITY_TYPE ,
ACTIVITY_DATE ,
LAST_MODIFIED_DATE,
CUSTOMER_FLAG,
milestone_KEY,
oppty_milestone_name_hist,
oppty_milestone_id_hist,
milestone_prob,
start_date,
oppty_close_date,
end_date;
Regards,
Prem

Select query in materialized view with two dblinks

Hi All,
We have oracle 10g On windows.
We are trying to create materialized view. Scenario is we have base table on other database and we are creating mview on different database.
Basa database have two schema's and i am selecting records from that two schema's using two private db links.
But when i am tryin gto create mview its not getting created. After 15 hrs. its still showing creation command and not finished.
Query is :-
Is it good practice to have two db links in select query of materialized view.

Billy Verreynne wrote:
Chanchal Wankhade wrote:
Is it good practice to have two db links in select query of materialized view.Same db link being used twice, or two different db links?
If the former, you ideally want the local Oracle db to send the join to the remote database, and for the remote database to drive the join between those 2 tables. There is a hint (<i>driving_site</i>) that can be used - or the join query can be defined on the remote database as a view, and the local materialised view can then use that remote view.
If you have 2 different db links and joining across these - usually a bad idea to perform distributed database joins. There are lots of limitations as to how the tables can be joined. Worse case, full table scans of both remote tables, pulling all the rows from the 2 remote database tables to the local database, and joining these on the local database.
I have seen some severe performance issues in the past as a result of distributed joins. I'll rather use 2 materialised views for pulling both distributed tables's data locally, and then do the join on local data (using indexes, partition pruning, etc)Hi Billy,
My scenario is i have two database database A and database B. Database A is having two schema's SCOTT AND HR. SCOTT schema have select privileges on HR schema.
DB LINK is between Database B to Database A. name is db.link.B.A.oracle.com.
What if i priovide while creating materialized view, the schema name before the table name in database B for this particuler table so it will pick up the table from that schema using same DB LINK(db.link.B.A.oracle.com.) that i am using to fetch records from SCOTT schema.
Above schnario is like two base schema's and one db link using two schema.

Leave a distinct value in a materialized view on two tables

Hi and thank you for reading,
I have the following problem. I am creating a materialized view out of two tables, with "where a.id = b.id".
The resulting materialized view list several values twice. For example, one customer name has several contact details and thus the customer name is listed several times. Now I would like to join each customer name with just ONE contact detail, how can I do that? (Even if I would loose some information while doing this).
Thanks
Evgeny

Hi,
You can do this
SELECT   deptno, empno, ename, job, mgr, hiredate, sal, comm
    FROM emp_test
ORDER BY deptno;
    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE          SAL       COMM
        10       7782 CLARK      MANAGER         7839 1981-06-09       2450
        10       7839 KING       PRESIDENT            1981-11-17       5000          0
        10       7934 MILLER     CLERK           7782 1982-01-23       1300
        20       7566 JONES      MANAGER         7839 1981-04-02       2975
        20       7902 FORD       ANALYST         7566 1981-12-03       3000
        20       7876 ADAMS      CLERK           7788 1987-05-23       1100
        20       7369 SMITH      CLERK           7902 1980-12-17        800
        20       7788 SCOTT      ANALYST         7566 1987-04-19       3000
        30       7521 WARD       SALESMAN        7698 1981-02-22       1250        500
        30       7844 TURNER     SALESMAN        7698 1981-09-08       1500
        30       7499 ALLEN      SALESMAN        7698 1981-02-20       1600        300
        30       7900 JAMES      CLERK           7698 1981-12-03        950
        30       7698 BLAKE      MANAGER         7839 1981-05-01       2850
        30       7654 MARTIN     SALESMAN        7698 1981-09-28       1250       1400
14 rows selected.
SELECT CASE
          WHEN ROW_NUMBER () OVER (PARTITION BY deptno ORDER BY empno) =
                                                                     1
             THEN deptno
       END deptno,
       empno, ename, job, mgr, hiredate, sal, comm
FROM emp_test;
    DEPTNO      EMPNO ENAME      JOB              MGR HIREDATE          SAL       COMM
        10       7782 CLARK      MANAGER         7839 1981-06-09       2450
                 7839 KING       PRESIDENT            1981-11-17       5000          0
                 7934 MILLER     CLERK           7782 1982-01-23       1300
        20       7369 SMITH      CLERK           7902 1980-12-17        800
                 7566 JONES      MANAGER         7839 1981-04-02       2975
                 7788 SCOTT      ANALYST         7566 1987-04-19       3000
                 7876 ADAMS      CLERK           7788 1987-05-23       1100
                 7902 FORD       ANALYST         7566 1981-12-03       3000
        30       7499 ALLEN      SALESMAN        7698 1981-02-20       1600        300
                 7521 WARD       SALESMAN        7698 1981-02-22       1250        500
                 7654 MARTIN     SALESMAN        7698 1981-09-28       1250       1400
                 7698 BLAKE      MANAGER         7839 1981-05-01       2850
                 7844 TURNER     SALESMAN        7698 1981-09-08       1500
                 7900 JAMES      CLERK           7698 1981-12-03        950
14 rows selected.Edited by: Salim Chelabi on 2009-09-14 08:13

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