6/1/2015 CacheManagementinOBIEE11g

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Cache Management in OBIEE 11gKashifMon13:22

UnionTransformation

StoredProcedureTransformations

SourceQualifierTransformation

SorterTransformation

SequenceGeneratorTransformation

RouterTransformation

NormalizerTransformation

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6/1/2015 CacheManagementinOBIEE11g

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1)InOBIEEwehavetwotypesofcache1.OracleBIPresentationServerCache2.OracleBiServerCache

1.OracleBIPresentationServerCache1)Itisatemporarycache,itwillbestoredinbelowlocation

C:\OBI11g.6\instances\instance2\tmp\OracleBIPresentationServicesComponent\coreapplication_obips1\sawrptcache2)Itwillbeuniqueperparticularuserandsession3)OBIEEwehavetwotypesofcache

2.OracleBIServerCache

4)InOBIEE11gcacheparametersaremanagedusingEM.5)EMinitiallywillchangenqsocnfig.INIfile.6)InNqsconfigfileenable=yesthencacheisenabledelsecacheisdisabled.7)Bydefaultcachefileswillbestoredinbelowpath8)E:/bi11g/instances/instance1/bifoundation/oracleBIservercomponenets/coreapplic

ationobis1/cache.

Advantageofcache:1)Lessnetworktraffic.2)Hugeperformanceimprovement.

RankTransformation

Lookup(Unconnected)Transformation

Lookup(connected)Transformation

FilterTransformation

ExpressionTransformation

AggregatorTransformation

Top 100 Informatica Interview QuestionsI have attended Informatica interview last week inwipro and couple of other companies, Questionbelow I faced in those companies. 1...

OBIEE 11G ARCHITECTURE WITHEXPLANATIONBelow diagram describes the standard logicalarchitecture of Oracle business intelligence 11g

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6/1/2015 CacheManagementinOBIEE11g

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Disadvantageofcache:

1)Thereisachancetogetstaledata.2)Harddiskmemoryiswasted.3)Maintenanceofcachebyadmin.

Cachearchitecture:

CacheManagementinOBIEE11g

Reportlogicalsqlwillbecomparedwithcachedatabaselogicalsqls,ifanythingismatchingthencorrespondingcacheoutputwillbeshowntotheuserelseitwillexecutefromthedb.

Enablingcache:

1)OpenEMcapacitymanagementperformance lock&editselectcacheenabledapplyactivatechangescloserestartoracleBIserver.

2) GotoNQSconfigfile&noticethatenable=yes.Runanyonereport&go to thecachelocation&observeafileiscreated.

3) OpenRPD in onlinemode go tomanage cacheobservealltheparameters.

system The entire systemarchitecture is c...

Normalization In SQL((1NF, 2NF, 3NF, BCNF,4NF, 5NF)Normalization: Normalization isstep-by-step process of reducing

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Stored ProcedureTransformations InInformaticaSTORED PROCEDURE A procedureis a pre-defined set of PL/SQL

statements to carry out a task. It is a PassiveTransformatio...

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4)Signoutfromanalysissigninasabellpassword:Admin123runsameabovereportintheRPDmanagecachenoticethatusecountisupdatedto1.

Staledata:

Olddataiscalledasstaledata.

AreportranfromDB&storedthatresult intocache&theDBisupdatedwithnewvaluesthenwerunthesameabovereportwewillgetoutputfromcachethatmeansolddatatoeliminatethisproblemweneedtodopurgingfollowedbyseeding.

Purging:

Cleaningcachefilesiscalledaspurging.

Wehavefourtypesofpurging.

1. Manual.2. Persistencytime.3. Eventpoolingtable.

4.ODBCfunctions.Manual:

Afterenablingcacherunanyonereport.ThencachewillbecreatedopenRPDinonlinemodemanagecache right clickontheentryclickonpurgeokclose.

Persistency:

Itisusefultopurgecachebasedonfixedtime.Toprovidethissettingweneedtoknowaccuratelythetableupdatedfrequency.

Process:

OpenRPDinonlinemodedoubleclickonD1_productsgotogeneraltabselectcachepersistencetimetype2minsokcheckinsavereloadservermetadatadevelopareportwithspecificcolumns&noticethatcacheiscreatedafter2minsautomaticallycachewillbepurged.

Note:wecancontrolcacheattablelevelinphysicallayerdoubleclickonanytable

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Connected LookupTransformation InInformaticaPassive Transformation Used tosearch To get the related values

To compare the values Used in slowly changingdim...

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Cache Management InOBIEE 11g1) In OBIEE we have two typesof cache 1. Oracle BIPresentation Server Cache 2...

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generaltabenable/disablecache.Reverttocacheablecacheneverexpires.

Eventpoolingtable:

Step1:creatingeventpoolingtable:

LogintoDBassupplier2usercreatetablesnqeptasselect*fromdevbiplatformsnqept.

Select*fromsnqept.

Step2:creatingatriggers:

TomonitorD1productscreate(or)replacetriggerEVENTTABLEUPDATETRIGGERafterinsertorupdateordeleteonD1productsforeachrow.

Begin

Insertintosnqept(updatetype,updateTS,tablename)values(sysdate,D1products)

End

/

Confirmtriggerisworkingornotbyexecutingbelowstatement.

Updated1productssetgenericdescription=potatochipwheregenericdescription=potatochips

Select*fromsnqept.

Hencetriggerisworking.

ConfiguringEPTtable:

Inphysicallayerrightclickonsupplier2connectionpoolimportmetadataimportsnqepttablefinish.

ToolsmenuutilitiesselectoracleBIeventtablesexecuteselectsnqeptprovidepoolingfrequencyas2minsokcheckinchangesok.

Testing:

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Developareportwithspecificdescription&makesurecacheiscreated.

UpdatesomedatainD1products,thenafter2mins(poolingfrequencies)cachewillbecleanedaswellsnqepttablewillbetruncated.

Odbcfunctions:

WehavefourtypesofODBCfunctions,thoseareusefultopurgecacheprogrammatically&thosefunctionsare

1.SApurgeallcache.2.SApurgecachebydb.3.SApurgecachebytable.4.SApurgecachebyquery.

Itisaaccuratemethodtopurgethecache.NormallythesefunctionswillbeexecutedbyETteamusingtheirpostloadoption.

Processforunderstanding:

Developareportmakesurecacheiscreatedadministrationundermaintenance&troubleshootingissuesqltypecallSApurgeallcacheissuesqlgo&seeincachefolder.cacheisremoved.

Seeding:

Insertingcacheintocachefolderiscalledasseeding.

Seedingsaretwotypes.

1.Manualseeding.

2.Byusingschedule.

1.Manualseeding:

Navigatetothereportinthecatalogclickonthatreportthenautomaticallycachewillbecreated.

2.Byusingschedule:

Logintoanalyticsdevelopareportwithvsdollarssavename:seedingreportnewagentschedulefrequency:once

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data&type2min.forwardtocurrenttime.ClickondelaycontentselectcontentasanalysisbrowseselectseedingreportclickondestinationsoracleBIservercachesavename:seedagentafter2minsgotocachefolder&noticethatacachefileisavailable.

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2 COMMENTS:

AwesomeBro..Finallyiclearedmyalldoubts..

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RAKESH PATIL 18September2014at08:09

Hi,Ihavemadesmallchangesinmothpromptinanalyticspageandranthereport. I got the physical query from cache. Without usingSAPurgeAllCache()how/Fromwhere toget thephysicalquery for themodifiedone.Canupleasehelpwithasolution

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RAMYAA KRISHN 20October2014at04:54

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