Expert Oracle Exadata - Parent Directory

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CHAPTER 12 MONITORING EXADATA PERFORMANCEFigure 12-3. Monitored SQL statement execution detailsThe Monitored SQL Execution Details page has a lot of information in it. This page is pretty selfexplanatoryif you have read SQL execution plans before, so we won’t go through every single detail here,but will focus on the most important metrics. Compared to old-fashioned DBMS_XPLAN output, the SQLMonitoring page is very interactive, so make sure that you hover your mouse over and click on almosteverything on the screen, to see the full array of functionality available to you.Let’s start from the top section on the page. At the top of the screen, right after the Monitored SQLExecution Details header, you see a little icon, which shows the status of the selected SQL statement’sexecution. The little circle will mean that the statement is still being executed (the cursor has not beenclosed nor cancelled).The Overview section, illustrated in Figure 12-4, will show some basic details, like which SQL ID isbeing executed, by whom, and so on. You can see the SQL text when you click on the little (i) icon next tothe SQL ID. You will see the SQL statement text and, beginning with version 11.2.0.2, you will also see thebind variable values used for the execution. Figure 12-5 shows the display that you get by clicking that (i)icon.384
CHAPTER 12 MONITORING EXADATA PERFORMANCEFigure 12-4. SQL Monitoring overivew sectionFigure 12-5. Bind variable values in the SQL Monitoring detail pageOf course, whether you should use bind variables for your long-running reports and DW queries is anentirely separate question. You shouldn’t use binds for long-running queries in your DW; you’d want tosacrifice some response time for hard-parsing a new query plan for each combination of literal valuesand possibly get an optimal plan for each variable set. Nevertheless, monitoring bind variable values of385
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For your convenience Apress has pla
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IntroductionThank you for purchasin
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INTRODUCTIONwere implementing Exada
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CHAPTER 1 WHAT IS EXADATA?end of t
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CHAPTER 1 WHAT IS EXADATA? Kevin S
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CHAPTER 1 WHAT IS EXADATA?Limited
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CHAPTER 1 WHAT IS EXADATA?Software
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C H A P T E R 2Offloading / Smart S
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CHAPTER 2 OFFLOADING / SMART SCANR
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CHAPTER 2 OFFLOADING / SMART SCAN3
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CHAPTER 2 OFFLOADING / SMART SCANo
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CHAPTER 2 OFFLOADING / SMART SCANS
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CHAPTER 2 OFFLOADING / SMART SCANX
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CHAPTER 2 OFFLOADING / SMART SCANC
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C H A P T E R 3Hybrid Columnar Comp
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CHAPTER 3 HYBRID COLUMNAR COMPRESS
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C H A P T E R 4Storage IndexesStora
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CHAPTER 4 STORAGE INDEXESMonitorin
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CHAPTER 4 STORAGE INDEXESVersion:
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CHAPTER 4 STORAGE INDEXES• For e
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CHAPTER 4 STORAGE INDEXES• _cell
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CHAPTER 4 STORAGE INDEXESSYS@EXDB1
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CHAPTER 4 STORAGE INDEXESpositives
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CHAPTER 4 STORAGE INDEXESIncorrect
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CHAPTER 4 STORAGE INDEXES---------
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CHAPTER 4 STORAGE INDEXES1 row sel
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C H A P T E R 5Exadata Smart Flash
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CHAPTER 5 EXADATA SMART FLASH CACH
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C H A P T E R 6Exadata Parallel Ope
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CHAPTER 6 MAKING PCBSParameter Def
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CHAPTER 6 MAKING PCBSTable 6-2. Hi
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CHAPTER 6 MAKING PCBSSo as you can
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CHAPTER 6 MAKING PCBS-- switch to
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CHAPTER 6 MAKING PCBSThe Old WayBe
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CHAPTER 6 MAKING PCBS642 05cq2hb1r
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CHAPTER 6 MAKING PCBS((4 × CPU_co
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CHAPTER 6 MAKING PCBSSYS@EXDB1> /S
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CHAPTER 6 MAKING PCBSSYS@EXDB1> @q
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CHAPTER 6 MAKING PCBSControlDescri
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CHAPTER 6 MAKING PCBSthe normal ca
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CHAPTER 6 MAKING PCBSEnter value f
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CHAPTER 6 MAKING PCBSphysical read
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CHAPTER 6 MAKING PCBStransaction t
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CHAPTER 7 RESOURCE MANAGEMENTimpor
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CHAPTER 7 RESOURCE MANAGEMENTSQL>
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CHAPTER 7 RESOURCE MANAGEMENTStep
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CHAPTER 7 RESOURCE MANAGEMENTNow,
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CHAPTER 7 RESOURCE MANAGEMENT50% m
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CHAPTER 7 RESOURCE MANAGEMENTgroup
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CHAPTER 7 RESOURCE MANAGEMENTLIST
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C H A P T E R 8Configuring ExadataO
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CHAPTER 8 CONFIGURING EXADATAThe P
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CHAPTER 8 CONFIGURING EXADATAregis
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CHAPTER 8 CONFIGURING EXADATATable
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CHAPTER 8 CONFIGURING EXADATA Note
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CHAPTER 9 RECOVERING EXADATAprovid
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CHAPTER 9 RECOVERING EXADATANetmas
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CHAPTER 9 RECOVERING EXADATASystem
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CHAPTER 9 RECOVERING EXADATA-rw-r-
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CHAPTER 9 RECOVERING EXADATA■ No
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CHAPTER 10 EXADATA WAIT EVENTSSYS@
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CHAPTER 10 EXADATA WAIT EVENTScell
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CHAPTER 10 EXADATA WAIT EVENTScolu
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CHAPTER 10 EXADATA WAIT EVENTSYou
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CHAPTER 13 MIGRATING TO EXADATA2.
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C H A P T E R 14Storage LayoutIn Or
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CHAPTER 14 STORAGE LAYOUTFailure G
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CHAPTER 14 STORAGE LAYOUTGrid Disk
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CHAPTER 14 STORAGE LAYOUTASM Disk
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CHAPTER 14 STORAGE LAYOUT1 st Grid
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CHAPTER 14 STORAGE LAYOUTTable 14-
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CHAPTER 14 STORAGE LAYOUTparameter
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CHAPTER 15 COMPUTE NODE LAYOUTCPU
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CHAPTER 15 COMPUTE NODE LAYOUTmore
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CHAPTER 15 COMPUTE NODE LAYOUTReca
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CHAPTER 15 COMPUTE NODE LAYOUTspin
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C H A P T E R 16Unlearning Some Thi
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CHAPTER 16 UNLEARNING SOME THINGS
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A P P E N D I X ACellCLI and dcliCe
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APPENDIX A CELLCLI AND DCLILIST FL
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APPENDIX A CELLCLI AND DCLICellCLI
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APPENDIX A CELLCLI AND DCLI• Dis
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A P P E N D I X BOnline Exadata Res
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A P P E N D I X CDiagnostic Scripts
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APPENDIX C DIAGNOSTIC SCRIPTSScrip
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Index• AAccess control list (ACL)
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• INDEXnetwork componentsclient a
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• INDEX• Epredicate offload, 36
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• INDEXOTHER_GROUPS consumer grou
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• INDEXCPU utilization, 152mixed
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• INDEXstructure, 105sub-query, 1
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Expert Oracle Exadatan n nKerry Osb
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Contents• About the Authors......
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• CONTENTSHow to Verify That Smar
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• CONTENTSControlling ESFC Usage
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• CONTENTSSummary ...............
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• CONTENTS• Chapter 12: Monitor
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• CONTENTS• Chapter 16: Unlearn
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About the Technical Reviewer Kevin
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