How to use hints in Obiee to increase performance
Anybody please tell me how can we use hints to increase performance of ad hoc and dashboard reports in obiee
Hi,
Check this,
http://www.howtoexam.com/index.php?option=com_content&view=article&id=75%3Ausing-hints-in-obiee-rpd-and-answers&catid=790%3Acomputers-and-software&Itemid=166
Rgds,
Dpka
Similar Messages
-
How to use Javascript in OBIEE?
Hi all,
can any one tell how to use javascript in OBIEE. i.e steps to follow to insert the javascript in OBIEE 11g or 10gIf you are trying to display total number of pages in a report, Add the below formula in the column of the report and hide that column in the report.
FX = sum(count(1))/25
You can then reference the column in the narrative view like this: "Total pages in the report are @5" and out put may be "Total Pages in the report are 30".
Or
You can also use something like the below:
To calculate them use fi:
CEILING(CAST(RCOUNT("FactColumn In the Report (Sum All)") as DOUBLE)/ 25) for the page number
CEILING(CAST(COUNT("FactColumn In the Report (Sum All)") as DOUBLE)/ 25) for the total pages
Put the above formula in the column and reference it in the narrative view like I mentioned in the previous example.
If you are report view is pivot, then please refer to this link: http://oraclebizint.wordpress.com/2008/01/17/oracle-bi-101332-pagination-in-pivot-tables/
Hope this helps.
Thanks,
-Amith. -
How to use CLOB in OBIEE 11g (11115) Reporting
Hello All,
I have a CLOB object. I need to use that in the report.
It just has text only. I defied it in RPD as LONGVARCHAR or OBJECT but it did not work out.
I tried using evaluate with TO_CLOB but i am getting below error any time
inconsistent datatypes: expected - got CLOB at OCI call OCIStmtExecute. [nQSError: 17010] SQL statement preparation failed.
Please give me a clue how to use a CLOB column in report.
I see a rittmen blog which is using as LOOKUP but i dont have that option either.
Please let me know what wrong i am doing.
Thanks in Advance.
KNDBMS_LOB.substr(<table.columnname>,<length of characters>,<start position>)
Check this
http://shivabizint.wordpress.com/2010/04/20/varchar2-greater-than-4000-in-obiee/
Mark if helps.
Thanks, -
Need Expert's Advice - How to use LabView Efficiently and to increase Readability
My application is fairly complex. It is a real world testing applications that simultaneously controls 16 servo motors running various stress testing routines asynchronously and all at the same time. The application includes queues, state machines, sub VI's, dynamically launched VI's, subpanels, semaphores, XML files, ini files, global variables, shared variables, physical analog and digital interfaces and industrial networking. Just about every technique and trick that LabView 2010 has to offer and the kitchen sink as well.
Still I am not happy with the productivity that LabVIEW 2010 has provided, nor the readability of my final product.
Sometimes there are too many wires. Much of my state machines have a dozen or more wires just going from input to output, doing nothing, just because one or two states in the machine need that variable in some state. Yeah, I could spend alot of time bundling and unbundling and rebundling those values, but I don't think that would improve things much.
We have had a long discussion about the use or misuse of Local variables in this forum and I don't want to repeat that here. I use them sparingly where I think it is relatively safe to do so. I also have a bug whenever I try and copy some code that contains one or more local variables. On Pasting the code with local variables, the result is something other than what I expected, I am not sure what. I have to undo the paste and rebuild the code one object at a time.
I am also having trouble using trouble using Variable Property Nodes. When I cut and paste them, they often loose their reference object and I have to go back into the code and redo the Link To on each one. That wastes alot of time and effort.
Creating subVIs is often not appropriate when the code makes many references to objects on the Front Panel. Some simple code will turn into a bunch of object references and dereferences which also tends to take alot of work to clean up and often does not help overall readability in many cases. I use subVIs when appropriate, but because of the interface overhead, not as often as I would like to. My application already has over 150 sub VIs.
The LabView Clean Up Diagram function often works poorly. It leaves way too much empty space between objects, making my diagrams 3 to 4 24" screens wide. That is way too much and difficult to navigate effectively. The Clean Up function puts objects in strange places relative to other objects used nearby. It does a poor job routing wires and often makes deciphering diagrams more difficult rather than easier.
My troubleshooting strategies don't work well for large diagrams and complex applications. The diagrams are so complex that execution highlighting may take 20 minutes for a single pass. Probes help, but breakpoint aren't of much use, because single stepping afterwards often takes you to somewhere else in the same diagram. I can't follow the logic well doing this.
Using structures, I may have Case structures nested 5 to 10 levels deep inside some Event Structure inside a While Loop. Difficult to work with and not very readable.
All and all, I can make it work, but I am not happy about the end result.
I am hoping to benefit from some expert advice from those that are experienced in producing large complex applications efficiently, debugging efficiently and producing readable diagrams that they are proud of.
Can anyone offer their advice on how best to use the LabView features to achieve these results in complex applications? I hope that you can help show me the light.I'm not an expert but I'm charged out as one at work.
I am off today so I'll share some thoughts that may help or possibly inspire others to chime. I have tried to continually improve my code in those areas and would greatly welcome others sharing their approaches and insights.
Note:
I do refactoring services to help customers with this situation. What I will write does not represent what we do in a code review since our final delverable is a complete final design and that is beyond the scope of this reply.
I'll comment on your points.
dbaechtel wrote:
My application is fairly complex. ...
While watching Olympic figure skating competion slow-motion replays, I learned how the subtleties of how the launching skate is planted while entering a jump can make the difference between a good jump and a bad one.
In software, we plant our foot when we turn from the design to the development. I have to admit that there where a couple of times when I moved from design to development too early and found myself in a situation like you have described.
How to know when design is done?
Waterfall says "cross every 't' and dot every 'i' " while Agile says "code now worry about design latter" and Bottom-up "says "demo working why bother designing" (Please feel free to coment on these over-simplifications gang).
My answer is not much more helpful for those new to LabVIEW.
My design work is done when my design diagrams are more complicated than the LabVIEW diagrm they describe.
dbaechtel wrote:
simultaneously controls 16 servo motors running various stress testing routines asynchronously and all at the same time. The application includes ...and the kitchen sink as well.
Have you posted any design documents you have? These will help greatly in letting us understand your application. More on diagrams latter.
Anytime I see multiple "variations on a theme", I think LVOOP (LabVIEW OOP ) . I'll spare you the LVOOP sales pitch but will testify that once you get your first class cloned off and running as a sibling (or child) you'll appreciate how nice it is to be able to use LVOOP.
Discalimer:
If you don't already have an OOP frame of mind, the learning curve will be steep.
dbaechtel wrote:
Still I am not happy with the productivity that LabVIEW 2010 has provided, nor the readability of my final product.
Sometimes there are too many wires....going from input to output, doing nothing,... spend alot of time bundling and unbundling and rebundling those values, but I don't think that would improve things much.
Full disclaimer:
I used to be of the same opinion and even used performance arguements to make my point. I have since, changed my mind.
Let me illustrate (hopefully). This link (if it works for you, use lefthand pane to navigate hierachy) shows an app I wrote from about 10 years ago when I was in my early days of routing wires. Even the "Main" VI started to suffer from too many wires as this preview from that links shows.
Clustering related data values using Type Definitions is the first method I would would urge. This makes it easier to find the VIs that use the Type def via the browse relationships>>>callers. If I implement my code correctly, any problem I believe is associated with a particualr piece of data that is a Type def has to be in one of the VIs that use that type def therefore easier to maintain.
When I wrote "related data" I am refering data normalization rules (which my wife knows and I picked-up from her and I claim no expertise in this area) where only values that are used together are grouped. E.G. Cluster named File contains "Path" and "Refnum" but not "PhaseOfMoon". This works out nicely with first creating sub-VI since all of the data related to file operations are right there whe I need it and it leads into the next concept ...
When I look at a value in a shift register on the diagram taking up space that is only used in a small sub-set of states, I concider using an Action Engine . This moves the wire from the current diagram into the Action Engine (AE), and cleans up the diagram. The AE brings with it built-in protection so provided I keep all of the opearations related to the the Type def inside the AE I am protected when I start using multiple threads that need at that data (trust me, it may not make a difference now but end users are clever). So that extra wire is effective encapsualted and abstracted away from the diagram you are looking at.
But I said earlier that I would not sell LVOOP so I'll show you what LVOOP based LV apps look like to contrast what I was doing ten years ago in that earlier link. This is what the top level VI looks like.
And this is the Analysis mode of that app.
I suspose I should not mention that LVOOP has wizards that automatically create the sub-VI (accessors) that bundle/unbundle the clusters, should I?
Continuing...
dbaechtel wrote:
We have had a long discussion about the use or misuse of Local variables...I also have a bug whenever I try and copy some code...
If you can simplify the code and duplicat ethe bug. please do so. We can get it logged and fixed.
dbaechtel wrote:
I am also having trouble using trouble using Variable Property Nodes....
That sounds like a usage issue. Posting code to illustrate the process will et us take a shot at figuring out what is happening.
dbaechtel wrote:
Creating subVIs is often not appropriate... My application already has over 150 sub VIs.
"Back in the day..." LV would not even try to create a sub-VI that involved controls/indicators. I use sub-VIs to maintain a common GUI often but I do it on purpose and when I find myself creating a sub-VI that involves a control/indicator, I hit ctrl-z immediately!
I figure a way around it (AE ?) and then do the sub-VI.
Judging by your brief explanation and assuming you do a LVOOP implementation, I would estimate that app need 750-1500 VIs.
dbaechtel wrote:
The LabView Clean Up Diagram function often works poorly....
THe clean-up works fine for how I use it. After throwing together "scratch code" and debugging the "rats nest" I'll hit clean-up as a first step. It guess good enough on simple digrams and in some cases inspires me to structure the diagram in a different way that I may not have thought about. If I don't like, ctrl-z.
Good deisgn and modualr implementaion led to smaller diagrams that just don't need thrre screens.
dbaechtel wrote:
My troubleshooting strategies don't work well for large diagrams and complex applications....Can anyone offer their advice on how best to use the LabView features to achieve these results in complex applications? I hope that you can help show me the light.
Smaller diagrams single step faster since the sub-VI run full speed. I cringe thinking about a 3-screen diagram with multiple probes open ( shivver!).
Re: Nestested structres
Sub-VIs (wink, wink, nudge, nudge)
If it works you have prven the concept is possible. That is the first step in an application.
I hope that gives you some ideas.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
Hi,
If I want to use hints in PL/SQL procedure, it is valid to write it this way:
begin
update /*+ INDEX(opp DIM_OPP_REFDB_IDX) */
scott.rec_dim_opportunity opp
set opp.mp_opportunity_re ....
endI doubt when I tried it that the optimizer didn't actually use the index.
Thanks in advance.
Oracle 10g R1
Windows 2003 32-bitthe table is of 90MB and when the UPDATE statement is used in SQL, the explain plan output shows that the index is used.
When I execute it from a procedure, the Current Statement show in TOAD doesn't show that the index is used and the update takes forever. Explain plan of the statement (as show in TOAD) shows that full table scan is being used. -
How to use hint on with clause query
Hi all,
I have a query and it consits full of tabs with WITH clause. Top level I am just selecting all the tabs (queries with WITH clause) by saying select * from tab1,tab2,.....so on .
Now my question is If I want to use hint on my SQL can I use the same by using tab1,tab2...
tab1, tab2 are not actually tables ....each tab represents one SQL with WITH clause.
Please let me know if there is any confusion on my post.What's stopping you from trying it yourself?
Post your results here to help others. -
Evaluate( 'to_char(%1,%2)' as char,SUM(EQ_HOLDING_FACT.shares),'FM999,999,999,990')
A general error has occurred. [nQSError: 42015] Cannot function ship the following expression: Evaluate( to_char(%1,%2),D1.c18, 'FM999,999,999,990')
how to resolve itYou can use the following as needed: In answers for example:
CAST(your_column AS CHAR)
CAST(your_column as INTEGER)
CAST(you_column as DOUBLE)
-- replace 'your_column' with the appropriate column name. -
How to use several Jserv-Processes to improve performance
Hi,
we are developing our new website with portal and the performance is not very high. In some papers I have read about using several JServ's on different servers to improve speed.
Has anyone tried this?
If someone has a documentation to setup several processes, let me know please.
Thanks.
OliverHi,
I am also interested in setting up several JServ processes for
portal (if possible). Can you pleas add me to the notification list if there
is already a procedure out there? Thanks. To open this out slightly (sorry to the original posters) I understand that release 2 uses OC4J instead of Jserv. As jserv only supported single thread and OC4J supports multiple threads, I wondered if anyone (from Oracle) had indicative figures for performance improvements (though I guess this is only realised for OC4J components).
John Skelton ([email protected] - the default email is wrong; thinks... must change my profile) -
Hi,
how can I use Hints in OBIEE Query in OBIEE 11g?
Thank you, best regards. R.Hi,
Check this,
http://www.howtoexam.com/index.php?option=com_content&view=article&id=75%3Ausing-hints-in-obiee-rpd-and-answers&catid=790%3Acomputers-and-software&Itemid=166
Thanks
Satya -
Using DB Links - Improving SELECT query performance
Hi there,
I am using dblink in the following query:
I would like to improve performance of the query by using hints as per described in the link: http://www.experts-exchange.com/Database/Oracle/9.x/Q_23640348.html. However, i am not sure how can i include this in my select query.
Details are:
Oracle - 9i Database Terminal Release .8
DB Link: TCPROD
Could someone please explain with an example how to use hints to get the query to select data on the remote database and then return the results to the target database?
Many Thanks.
SELECT ec.obid AS prObid,
ec.b2ProgramName AS program,
ec.projectName AS project,
ec.wbsID AS prNo,
ec.wbsName AS title,
ec.revision AS revision,
ec.superseded AS revisionSuperseded,
ec.lifeCycleState AS lifeCycleState,
ec.b2ChangeType AS type,
ec.b2Complexity AS subType,
ec.r1SsiCode AS ssi,
ec.b2disposition as disposition,
ec.wbsOriginator AS requestor,
ec.wbsAdministrator AS administrator,
ec.changepriority as priority,
ec.r1tsc as tsc,
ec.t1comments as tenixComments,
ec.b2securityclass as securityClassification,
ec.t1changesafety as safety,
ec.t1actionofficer as actionOfficer,
ec.t1changereason as changeReason,
ec.t1wbsextchangenumber as extChangeNo,
ec.creator as creator,
to_date(substr(ec.creationdate,
0,
instr(ec.creationdate, ':', 1, 3) - 1),
'YYYY/MM/DD-HH24:MI:SS') as creationdate,
to_date(ec.originatorassigndate, 'YYYY/MM/DD') as originatorassigndate,
zbd.description as description,
zbc.comments as comments
FROM (SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM awdbt1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM mart1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM mpsdt1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM nondt1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnast1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnlht1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnolt1m4.cmPrRpIt@TCPROD
UNION
SELECT obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rzptt1m4.cmPrRpIt@TCPRODit's the tablename in the hint, not the column name
something like
SELECT ec.obid AS prObid,
ec.b2ProgramName AS program,
ec.projectName AS project,
ec.wbsID AS prNo,
ec.wbsName AS title,
ec.revision AS revision,
ec.superseded AS revisionSuperseded,
ec.lifeCycleState AS lifeCycleState,
ec.b2ChangeType AS type,
ec.b2Complexity AS subType,
ec.r1SsiCode AS ssi,
ec.b2disposition as disposition,
ec.wbsOriginator AS requestor,
ec.wbsAdministrator AS administrator,
ec.changepriority as priority,
ec.r1tsc as tsc,
ec.t1comments as tenixComments,
ec.b2securityclass as securityClassification,
ec.t1changesafety as safety,
ec.t1actionofficer as actionOfficer,
ec.t1changereason as changeReason,
ec.t1wbsextchangenumber as extChangeNo,
ec.creator as creator,
to_date(substr(ec.creationdate,
0,
instr(ec.creationdate, ':', 1, 3) - 1),
'YYYY/MM/DD-HH24:MI:SS') as creationdate,
to_date(ec.originatorassigndate, 'YYYY/MM/DD') as originatorassigndate
FROM (SELECT /*+ DRIVING_SITE(awdbt1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM awdbt1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(mart1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM mart1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(mpsdt1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM mpsdt1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(nondt1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM nondt1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(rnast1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnast1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(rnlht1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnlht1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(rnolt1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rnolt1m4.cmPrRpIt@TCPROD
UNION
SELECT /*+ DRIVING_SITE(rzptt1m4.cmPrRpIt) */ obid,
b2ProgramName,
projectName,
wbsID,
wbsName,
revision,
superseded,
lifeCycleState,
b2ChangeType,
b2Complexity,
r1SsiCode,
b2disposition,
wbsOriginator,
wbsAdministrator,
changepriority,
r1tsc,
t1comments,
b2securityclass,
t1changesafety,
t1actionofficer,
t1changereason,
t1wbsextchangenumber,
creator,
creationdate,
originatorassigndate
FROM rzptt1m4.cmPrRpIt@TCPROD) ec(not tested, of course) -
How to use Oracle Hints in OBIEE
Hello guys
I have a report that is running forever and I have reviewed the explain plan over and over, which makes me think that the join between these 2 tables are slowing everything down --- The fact table has 10Billion records and the Dim has 10 Millions records. Even if the report has filters on various columns of the 2 tables, it is still taking forever. The explain is showing that its doing a nested loop join of these 2 tables which takes a lot of time.
I am thinking of using some Hint to force the query to scan the dimension table first (with the filter condition I defined, it will return 80 rows only from Dim table), and then use the result set of the scanning to go and look for matching records only in the fact table. Its should help speed up the query..
I'd like to know what kind of hints can help with that kind of operation, also how to define these kind of hints in OBIEE. Now I know that in Physical Layers, I can include hints in physical table property, but how to determine which table (fact or dim) to embed the join hints?
Need advice from anybody who have experience working with hints?
Much appreciation!Just an update:
I have tried a couple of join operation hints like USE_NL and USE_HASH hints, it changes the join method but didn't help with performance at all.
The original SQL that OBIEE generates is: ----------Takes about 20 mins to return a dozen rows
select sum(T991020.LP Amount) as c1,
T991021.DAYOFWEEK as c2,
T991021.PU DATES as c3
from RD_Grant.PU_DATES T991021, Dimension -----Huge
PU_Grant.PU_FACTS_9 T991020 FACT ----Gigantic
where (T991020.COMPANY = T991021.COMPANY
and T991020.DATES = T991021.DATES
and T991020.DATES between "10/10/2009" and "31/10/2009"
and T991021.DAYOFWEEK = 'Sunday'
and T991021.DATES between '09/13/2009' and '11/03/2009')
group by T991021.PU DATES, T991021.DAYOFWEEK
Basically I am still thinking of finding a way to force the query to scan the dimension table first (with the filter condition I defined, it will return 80 rows only from Dim table), and then use the result set of the scanning to go and look for matching records only in the fact table. Its should help speed up the query..
Any suggestions?
Thanks
Edited by: user7276913 on Nov 5, 2009 7:07 PM
Edited by: user7276913 on Nov 5, 2009 7:22 PM -
How to use Table valued MSSQL function in OBIEE
Hi all,
Can some one help me to understand how to use table valued function in OBIEE? I want to use a table valued function (MSSQL function, with some input parameter), in the physical layer to pull the data?
I know for MSSQL Stored Procedure we can write as
EXEC SP_NAME @Parameter = 'VLUEOF(NQ_SESSION.Variablename)'
but now I have a table valued function in the query window I can get the data as
select * from myfunction(parametervalue)
In physical layer of OBIEE I have tried as
select * from myfunction('VLUEOF(NQ_SESSION.Variablename)'), but I'm getting error as the NQ_SESSION variable doesn't have a value , but actually I have initialized the variable but still Im getting error.
Can some one help me to solve this.
Thanks,
MithunFollow this link and try yourself. let me know for issues
Substring instr issue in obiee
Appreciate if you mark
Edited by: Srini VEERAVALLI on Feb 20, 2013 8:13 AM -
I bought 3 iPhone 4s and each should have 5gb of cloud. I want to only use my one iTunes ID. How can I get this storage space increased to the 15 GB?
iCloud storage is not allocated by device. iCloud storage is allocated to your iCloud AppleID. You get 5GB of iCloud storage.
-
How to use SQL OVER and PARTITION BY in OBIEE Expression Builder??
Hi there,
I want to create a new logical coulmn with the following SQL query.
SUM(Inventory Detail.Qty) OVER(PARTITION BY Inventory Detail.A,Inventory Detail.B,Item.C,Inventory Detail.D,MyDATE )/SUM(Inventory Detail.Qty) OVER(PARTITION BY Inventory Detail.A,Inventory Detail.B,Item.C )
How to use the OVER and PARTITION BY in OBIEE Expression Builder??
Thanks in Advancehi bipin,
We cant use by in Expression builder(rpd) .But use the same formula like this in Fx of answers
SUM(Inventory Detail.Qty) OVER(PARTITION BY Inventory Detail.A,Inventory Detail.B,Item.C,Inventory Detail.D,MyDATE )/SUM(Inventory Detail.Qty) >OVER(PARTITION BY Inventory Detail.A,Inventory Detail.B,Item.C )SUM(Inventory Detail.Qty by Detail,ITEM,Mydate)/SUM(qty by detail,item)
First check the numerator whether it was giving correct results or not then go with denominator
compare the results with sql that u have
Let me know if that does work
thanks,
saichand.v
Edited by: Saichand Varanasi on Jul 27, 2010 9:27 PM
Edited by: Saichand Varanasi on Jul 27, 2010 9:28 PM -
How to use TRUNC function with dates in Expression Builder in OBIEE.
Hi There,
How to use TRUNC function with dates in Expression Builder in OBIEE.
TRUNC (SYSDATE, 'MM') returns '07/01/2010' where sysdate is '07/15/2010' in SQL. I need to use the same thing in expression builder in BMM layer logical column.
Thanks in advanceuse this instead:
TIMESTAMPADD(SQL_TSI_DAY, ( DAYOFMONTH(CURRENT_DATE) * -1) + 1, CURRENT_DATE)
Maybe you are looking for
-
Using Mac Pro running Snow Leopard (10.6.8) & editing & printing from Photoshop CS 6. Have new Canon Pixma Pro-100 printer and set it up yesterday. First thing printed was a document from MS Word (a letter) 8.5 X 11 plain paper - this came out OK.
-
screen is dim
-
I'm looking at this site and I like to create a photo gallery page turn similar to this. Any idea how I do this?
-
How can I build a News/Article (Entertainment and Gaming) website with Adobe Muse CC 14.1?
Hello, I've created a website in Muse but there's one thing that is really giving me a headache I want to create a news portal where other people who have no understanding of HTML can post news and articles. We're using Adobe Muse CC 14.1.. Any help?
-
How do I enable magnetic timeline in Final Cut Pro X 10.0.8?
I can't find out anywhere? It is profoundly annoying! Please help.