Query rewrite does not always work?
Hi -
I created several cubes at this point.
Cube #1: simple time and volume. Query re-write works great.
Cube #2: simple customer (geography) hierarchy and volume. Query re-write works great.
Cube #3: Added product dimension along with time and customer. I also added ytd volume and same period prior period volume calculations.
The Cube#3 is not peforming a query re-write.
All cubes have MV and Query rewrite enabled.
I am using lastest verisons of 11G and AWM.
Any ideas how to debug why query rewrite is not working?
Thanks,
Frank.
Hi Frank,
See the information at the following link:- https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=577293.1
This is titled 'Oracle OLAP 11g: How to ensure use of Cube Materialized Views/Query Rewrite'
I hope it helps
Thanks,
Stuart Bunby
OLAP Blog: http://oracleOLAP.blogspot.com
OLAP Wiki: http://wiki.oracle.com/page/Oracle+OLAP+Option
OLAP on OTN: http://www.oracle.com/technology/products/bi/olap/index.html
DW on OTN : http://www.oracle.com/technology/products/bi/db/11g/index.html
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I have several customers with the same problem.
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Hello all,
let me start by wishing you all the best for the forthcoming year !
And now, the problem
I am trying to create a materialized view so that a few slow reports that run on OBIEE (10g) make use of query rewrite functionality. Unfortunately any attempt that had made was unsuccessful. I though of posting the query that is created by OBIEE and the different materialized views that i have created, so that anyone that had a similar problem before might help me through it. So here it goes ( there is a separate discussion for the other query here ) :
First comes the query that was created by OBIEE when no materialized view existed.
SELECT DISTINCT D1.c5 AS c1, D1.c10 AS c2, D1.c9 AS c3, D1.c6 AS c4, D1.c8 AS c5, D1.c8 / NULLIF (D1.c6, 0) AS c6,
D1.c7 AS c7, D1.c7 / NULLIF (D1.c6, 0) AS c8, D1.c4 AS c9, D1.c3 / NULLIF (D1.c1, 0) AS c10, D1.c2 / NULLIF (D1.c1, 0) AS c11
FROM (SELECT SUM (D1.c6) OVER (PARTITION BY D1.c5) AS c1,
SUM (D1.c7) OVER (PARTITION BY D1.c5) AS c2,
SUM (D1.c8) OVER (PARTITION BY D1.c5) AS c3,
SUM (D1.c4) OVER (PARTITION BY D1.c5) AS c4,
D1.c5 AS c5, D1.c6 AS c6, D1.c7 AS c7, D1.c8 AS c8, D1.c9 AS c9, D1.c10 AS c10
FROM ( SELECT COUNT (CASE D1.c12 WHEN 1 THEN D1.c11 ELSE NULL END) AS c4, D1.c5 AS c5, SUM (D1.c13) AS c6,
SUM (D1.c14) AS c7, SUM (D1.c15) AS c8, COUNT (DISTINCT D1.c11) AS c9, D1.c10 AS c10
FROM (SELECT /*+ PARALLEL(T16913,8) */
T19403.YEAR_MONTH AS c5,
T7252.PERCENTAGE AS c10,
T366.BARCODE AS c11,
ROW_NUMBER () OVER ( PARTITION BY T19403.YEAR_MONTH, T366.BARCODE ORDER BY T19403.YEAR_MONTH DESC, T366.BARCODE DESC) AS c12,
T16913.PHA_QUANTITY AS c13,
T16913.EXEC_COST AS c14,
T16913.EXEC_VALUE AS c15
FROM EXECALENDAR_DIM T19403,
DRUG_DIM T366,
PERCENTAGE_DIM T7252,
PRESCDRUG_FACT T16913
WHERE (T366.DWHKEY = T16913.DRU_DWHKEY
AND T7252.DWHKEY = T16913.PER_DWHKEY
AND T16913.EXECUTION_DATE =
T19403.CALENDAR_DATE
AND T19403.YEAR_MONTH = '201212')) D1
GROUP BY D1.c5, D1.c10) D1) D1
ORDER BY c1, c2
so my first try was that
CREATE MATERIALIZED VIEW PRESCDRUG_FACT_MV BUILD IMMEDIATE REFRESH ON DEMAND ENABLE QUERY REWRITE AS
SELECT /*+ PARALLEL(PRESCDRUG_FACT,8) */
EXECALENDAR_DIM.YEAR_MONTH as YEAR_MONTH
,PRESCDRUG_FACT.PER_DWHKEY
,count(*) as COUNT_ALL
,COUNT (EXECALENDAR_DIM.YEAR_MONTH) AS c_YEAR_MONTH
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_CD) DRUG_CODE
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_BARCODE) BARCODE
-- quantities
,SUM (PRESCDRUG_FACT.PHA_QUANTITY) AS PHA_QUANTITY
,SUM (PRESCDRUG_FACT.DOC_QUANTITY) AS DOC_QUANTITY
,SUM (PRESCDRUG_FACT.APR_QUANTITY) AS APR_QUANTITY
-- values
,SUM (PRESCDRUG_FACT.EXEC_VALUE) AS EXEC_VALUE
,SUM (PRESCDRUG_FACT.PUB_VALUE) AS PUB_VALUE
,SUM (PRESCDRUG_FACT.APR_VALUE) AS APR_VALUE
-- costs
,SUM (PRESCDRUG_FACT.EXEC_COST) AS EXEC_COST
,SUM (PRESCDRUG_FACT.PUB_COST) AS PUB_COST
,SUM (PRESCDRUG_FACT.APR_COST) AS APR_COST
FROM EXECALENDAR_DIM, PRESCDRUG_FACT
WHERE EXECALENDAR_DIM.CALENDAR_DATE = PRESCDRUG_FACT.EXECUTION_DATE
AND EXECALENDAR_DIM.YEAR_MONTH in ( '201212')
GROUP BY EXECALENDAR_DIM.YEAR_MONTH ,PRESCDRUG_FACT.PER_DWHKEY
and i got the following messages from DBMS_MVIEW.EXPLAIN_REWRITE
QSM-01150: query did not rewrite
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, EXECALENDAR_DIM, on column, CALENDAR_DATE
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXECUTION_DATE
QSM-01082: Joining materialized view, PRESCDRUG_FACT_MV, with table, PRESCDRUG_FACT, not possible
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, DRU_DWHKEY
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXEC_VALUE
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXEC_COST
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, PHA_QUANTITY
QSM-01155: multi-mv query rewrite not possible when there is a Window Function
QSM-01219: no suitable materialized view found to rewrite this query
My second attempt is the following ( in comparison to the first i have added the DRUG_BARCODE column in the grouping clause
CREATE MATERIALIZED VIEW PRESCDRUG_FACT_MV BUILD IMMEDIATE REFRESH ON DEMAND ENABLE QUERY REWRITE AS
SELECT /*+ PARALLEL(PRESCDRUG_FACT,8) */
EXECALENDAR_DIM.YEAR_MONTH as YEAR_MONTH
,PRESCDRUG_FACT.PER_DWHKEY
,PRESCDRUG_FACT.DRUG_BARCODE
,count(*) as COUNT_ALL
,COUNT (EXECALENDAR_DIM.YEAR_MONTH) AS c_YEAR_MONTH
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_CD) DRUG_CODE
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_BARCODE) BARCODE
,COUNT (DISTINCT PRESCDRUG_FACT.PRESC_NUMBER) PRESC_NUMBER
,COUNT (DISTINCT PRESCDRUG_FACT.PRESC_ID) PRESC_ID
-- quantities
,SUM (PRESCDRUG_FACT.PHA_QUANTITY) AS PHA_QUANTITY
,SUM (PRESCDRUG_FACT.DOC_QUANTITY) AS DOC_QUANTITY
,SUM (PRESCDRUG_FACT.APR_QUANTITY) AS APR_QUANTITY
-- values
,SUM (PRESCDRUG_FACT.EXEC_VALUE) AS EXEC_VALUE
,SUM (PRESCDRUG_FACT.PUB_VALUE) AS PUB_VALUE
,SUM (PRESCDRUG_FACT.APR_VALUE) AS APR_VALUE
-- costs
,SUM (PRESCDRUG_FACT.EXEC_COST) AS EXEC_COST
,SUM (PRESCDRUG_FACT.PUB_COST) AS PUB_COST
,SUM (PRESCDRUG_FACT.APR_COST) AS APR_COST
FROM EXECALENDAR_DIM, PRESCDRUG_FACT
WHERE EXECALENDAR_DIM.CALENDAR_DATE = PRESCDRUG_FACT.EXECUTION_DATE
AND EXECALENDAR_DIM.YEAR_MONTH in ( '201212')
GROUP BY EXECALENDAR_DIM.YEAR_MONTH ,PRESCDRUG_FACT.PER_DWHKEY,DRUG_BARCODE
and the results of DBMS_MVIEW.EXPLAIN_REWRITE
QSM-01150: query did not rewrite
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, EXECALENDAR_DIM, on column, CALENDAR_DATE
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXECUTION_DATE
QSM-01082: Joining materialized view, PRESCDRUG_FACT_MV, with table, PRESCDRUG_FACT, not possible
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, DRU_DWHKEY
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXEC_VALUE
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, EXEC_COST
QSM-01102: materialized view, PRESCDRUG_FACT_MV, requires join back to table, PRESCDRUG_FACT, on column, PHA_QUANTITY
QSM-01155: multi-mv query rewrite not possible when there is a Window Function
QSM-01219: no suitable materialized view found to rewrite this query
third try (rolling up the group results)
CREATE MATERIALIZED VIEW PRESCDRUG_FACT_MV BUILD IMMEDIATE REFRESH ON DEMAND ENABLE QUERY REWRITE AS
SELECT /*+ PARALLEL(PRESCDRUG_FACT,8) */
EXECALENDAR_DIM.YEAR_MONTH as YEAR_MONTH
,PRESCDRUG_FACT.PER_DWHKEY
,PRESCDRUG_FACT.DRUG_BARCODE
,count(*) as COUNT_ALL
,COUNT (EXECALENDAR_DIM.YEAR_MONTH) AS c_YEAR_MONTH
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_CD) DRUG_CODE
,COUNT (DISTINCT PRESCDRUG_FACT.DRUG_BARCODE) BARCODE
,COUNT (DISTINCT PRESCDRUG_FACT.PRESC_NUMBER) PRESC_NUMBER
,COUNT (DISTINCT PRESCDRUG_FACT.PRESC_ID) PRESC_ID
-- quantities
,SUM (PRESCDRUG_FACT.PHA_QUANTITY) AS PHA_QUANTITY
,SUM (PRESCDRUG_FACT.DOC_QUANTITY) AS DOC_QUANTITY
,SUM (PRESCDRUG_FACT.APR_QUANTITY) AS APR_QUANTITY
-- values
,SUM (PRESCDRUG_FACT.EXEC_VALUE) AS EXEC_VALUE
,SUM (PRESCDRUG_FACT.PUB_VALUE) AS PUB_VALUE
,SUM (PRESCDRUG_FACT.APR_VALUE) AS APR_VALUE
-- costs
,SUM (PRESCDRUG_FACT.EXEC_COST) AS EXEC_COST
,SUM (PRESCDRUG_FACT.PUB_COST) AS PUB_COST
,SUM (PRESCDRUG_FACT.APR_COST) AS APR_COST
FROM EXECALENDAR_DIM, PRESCDRUG_FACT
WHERE EXECALENDAR_DIM.CALENDAR_DATE = PRESCDRUG_FACT.EXECUTION_DATE
AND EXECALENDAR_DIM.YEAR_MONTH in ( '201212')
GROUP BY EXECALENDAR_DIM.YEAR_MONTH , rollup (PRESCDRUG_FACT.PER_DWHKEY, DRUG_BARCODE)
results from DBMS_MVIEW.EXPLAIN_REWRITE
QSM-01150: query did not rewrite
QSM-01295: no suitable grouping_id found in materialized view with grouping sets
QSM-01155: multi-mv query rewrite not possible when there is a Window Function
QSM-01219: no suitable materialized view found to rewrite this query
So, no luck so far. My guess is that it has to do something with the partition clause that appears in the original query.
anyway, if anything cross your minds..
thanks in advance
TheodoreHello again,
It appeared that, the problem is present only when I try the query in pl/sql developer.
For some reason, even though I set QUERY_REWRITE_INTEGRITY to STALE_TOLERATED, it behaved as this parameter was set to ENFORCED.
So the case was that:
for session - STALE_TOLERATED
for system - ENFORCED
In v$parameter2 against "QUERY_REWRITE_INTEGRITY" was shown "stale_tolerated", but the query was not rewritten.
When I do the same (altering the session and perform the select query) in SQLPlus, everything works as expected - the query is rewritten.
And I conclude the problem is in PL/SQL Developer (my version is 8.0.1.1498) or something related to this.
Edited by: Verdi on 2010-2-12 14:00 -
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description Backup ISP
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ip sla schedule 20 life forever start-time now
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interface FastEthernet3
description Backup ISP
switchport access vlan 800
no ip address
interface FastEthernet4
description Primary ISP
ip dhcp client route track 100
ip address dhcp
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
crypto ipsec client ezvpn EZVPN-to-1941
interface Vlan800
description Backup ISP
ip address dhcp
ip nat outside
ip virtual-reassembly in
track 100 list boolean or
object 101
object 102
track 101 ip sla 10 reachability
track 102 ip sla 20 reachability
ip sla 10
icmp-echo 4.2.2.2 source-interface FastEthernet4
threshold 1000
timeout 1500
frequency 5
ip sla schedule 10 life forever start-time now
ip sla 20
icmp-echo 208.67.222.222 source-interface FastEthernet4
threshold 1000
timeout 1500
frequency 5
ip sla schedule 20 life forever start-time now
ip route 4.2.2.2 255.255.255.255 FastEthernet4 permanent
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Firewire port does not always work to import movies from video camera
I've been having issues with my Mac Pro lately, it is an 06 model. Opening up iMovie and starting the import process for video from my Canon camera, the software will not recognize that the camera is connected.
In system profile I do see that the camera is connected via the fire-wire port and shows the correct name, etc.
After a bit of troubleshooting, restarting software, I unplugged the fire-wire connector that is part of the dongle coming from the 23" cinema display and the camera appeared like it should.
System profile indicated that the fire-wire connection from the 23" display was unknown. I do know that I can plug other items into the display and they work fine.
Rebooting the Mac Pro did not have any effect either.
Granted, it is working, but I wish I did not have to unplug the cinema display port each time I want to do this.The firewire port on the Display does not have enough internal power requirements to support some devices. Try the firewire port on the back of the Mac Pro. If you are using a firewire repeater then don't connect it to the Display firewire port, use the Mac pro.
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Adobe 9 plugin save function does not always work
This may not be a problem with Adobe Reader or Internet Explorer, but my credit card company says it is, so I need to look.
When I try to get my on-line statements from a particular credit card company, a new IE window with Adobe Reader running "underneath" comes up fine. When I press the "Save" icon (the floppy disk icon) nothing happens.
I have done this recently with another similar site (brokerage account) successfully, so my version of Reader and/or IE7 do not seem to be the problem. Note that in all cases the bank/broker do not give direct access to the pdf file, which is probably for security reasons -- in other words, "right-click/save-as" does not work for on-line statements. Instead they run a server-end script which "presents" the pdf to the new browser window. All of this indicates that they have control over the security and therefore disallow me from saving locally.
If anyone knows of a setting I need to make, or if they can confirm that the problem is on the server end, I could use the help. I want to stay paperless, so you'll be helping the environment if you help me :)
My alternative is to print the statement, then scan it and throw it out, which is obviously ridiculous :)I am having much the same problem as the OP and Martin.
Currently I am running Reader 9 on a Vista computer. This is a new computer and I was able to save my credit card statement in January. Then after I saved my statement in January, I believe I upgraded Reader at some point, and when I tried to save my February statement it wouldn't work.
I have tried to right click on the document, and there is no "Save As..." option. But like someone else posted, it's just a long gibberish type name in IE address bar.
I also tried printing the document to a file, but that does not work either. It fails to bring up the dialog box asking the usual queations. I can print the document on my printer.
I have spent several sessions with the credit card company website tech support people. Per their suggestions I have uninstalled and reinstalled Reader 9, they also had me delete cookies, change popup blocker settings, add security certificates, etc.
None of that worked, and they tell me it's an Adobe problem.
Like other posters I can save this same statement using my laptop with an earlier version of Reader. In my case Reader 7.
Like Martin posted, and the credit card tech people suggested, I believe this is a Reader 9 problem.
I hope someone has a fix.
Thanks,
Don Sepanski -
Starting with TB 31.2 - some four months ago - I have not been able to open TB to the Inbox. I downloaded the "Select INbox" add on many times (and disabled/removed as many times) but it does not work consistently. When it does finally work I have no idea why. And then the next time, it doesn't work again!
I still have this problem. There doesn't seem to be any rhyme or reason to it. This morning TB opened to the Inbox but I have little confidence that it will do that again.
In earlier post I already replied that I don't have CCleaner on my computer. I also have not downloaded any programs since I began to have this problem.
Now I wonder if the Intego Net Barrier and Virus Barrier could be having a negative influence. I've been using these for years and have not changed their settings in any way for years. If they could be the reason that the settings are erased between TB starts what should I do?
You can probably tell that I only use my computer and do not understand anything about programming, etc.! I need complete, step-by-step explanations for a computer dummy.
Thanks in advance. -
Airplay does not always work with Apple TV (no airplay symbol)
We have two iPhones and one iPad (all using iOS6). Sometimes we can connect any device without problems, sometimes the Airplay symbol does not appear on the iPhone or iPad at all. Rebooting (unplugging and plugging again power cord) the Apple TV sometimes helps. Anyhow, I checked all hints from the Apple FAQ and the only thing I don't use is iOS 7 (but currently iOS 6 should still be ok).
Does anybody made the same experience?This morning I downgraded the firmware of my Apple TV to 5.3 (I was on 6.0.2). This solved my problem! :)
I too had lagging playback, both from iTunes as well as for Airplaying a video from my iPad. Often the video or airplay just would not start.
With firmware 5.3 my ATV is again as fast as it used to be: videos start promptly, no waiting for the spinning disc and hoping the thing will start. It just works now :) -
Sleep button on main menu does not always work..
For my own convenience, I added the "sleep" selection to my iPod's main menu, so I wouldn't have to worry about holding down the play/pause button instead. Quite often, this button simply doesn't work in putting the iPod to sleep. Holding the play/pause button works, but clicking sleep seems to do nothing half the time. The iPod realises that it's being clicked, since it makes the "click" noise from the speaker.. yet nothing happens. Is this some sort of wierd bug? And if so, why does the sleep option work some times and not others?
I usually give mine at least 15 sec and mine works perfectly.If i dont wait for it to spin down it will not cut off.try it.......
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