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Precise for Oracle is capable of providing additional insight into a problem by helping you focus on the item or object that is causing the problem. When you click on certain findings in the SQL tab or the Object tab, and you launch to the tab that can provide additional information on the problem, the row representing the item or object that is most likely causing the problem is highlighted. This provides a further indication as to where you should focus your analysis.

About the Highlights area

The Highlights area displays a brief description of the findings for the selected type of operation.

The What to do next area displays one or more recommended steps to identify the cause of the problem. Carefully review all data for the finding before continuing.

About the Advice area

The Advice area displays one or more recommended options to resolve or reduce the problem for the selected finding. Carefully review all data for the finding and then perform the advice that best suits your needs.

How to investigate findings

When you start investigating the findings, it is good practice to start with the finding that has the highest severity ranking in the Findings table.

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Several Dashboard tab findings exist in the table to help the user. The Dashboard tab for an instance has the following findings:

  • High CPU Wait
  • High Other Host Wait
  • High Memory Wait
  • High Shared Pool Wait
  • High Rollback Segment Wait
  • High Redo Log Buffer Wait
  • High Log Switch and Clear Wait
  • High RAC/OPS Wait
  • High Other Lock Wait
  • High Background Process Wait
  • High Parallel Query Server Wait
  • High Buffer Wait
  • High Other Wait
  • High Remote Query Wait
  • High Client Communication Wait
  • High Resource Manager Wait
  • High MTS Wait
  • Heavy Statement
  • Frequently Executed Statement
  • Heavily Accessed Object
  • Locked Object
  • High Sorts on Disk
  • High Undo Activity
  • Heavily Accessed Cluster
  • Locked Cluster
  • Storage Contention on Device (Clariion)
  • Storage Contention on Device (Symmetrix Thick)
  • Storage Contention on Device (Symmetrix Thin)
  • Storage Contention on Device (Symmetrix F.A.S.T. VP)
  • Storage Contention on Redo Logs and DB Files
  • Storage Contention on Temporary Objects
  • Heavy Storage Device Holding Undo Objects
  • Unbalanced Storage Devices Activity
  • Heavy J2EE Caller Service
  • High SQL Executions for J2EE Caller Service

Anchor
HighCPUWait
HighCPUWait
High CPU Wait

Your instance has spent much of its In Oracle time waiting for CPU.

Table 12-1 High CPU Wait

 

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Description
What to do

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next

Perform one of the following options:

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  • Examine high wait for CPU statements in the Activity tab.

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  • Examine high CPU statements usage in the Activity tab.

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  • Examine CPU utilization in the Statistics tab.

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  • Try to identify the system processes consuming CPU resources using the Insight Savvy for OS tool.
Advice

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Perform one of the following options:

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  • Identify other processes in the system.

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  • The instance has spent much of its In Oracle time waiting for CPU; every process running in your system affects the available CPU resources.
    Effort spent tuning non-Oracle factors can improve Oracle performance.

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  • Identify heavy statements using CPU or Waiting for CPU and try to tune them.

Anchor
HighOtherHostWait
HighOtherHostWait
High Other Host Wait

Your instance has spent much of its In Oracle time in Other Host Wait.

Table 12-2 High Other Host Wait

 

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Description
What to do

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next

Perform one of the following options:

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  • Examine heavy wait for Other Host Wait statements in the Activity tab.

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  • Try to identify the system processes consuming OS resources using the Insight Savvy for OS tool.
Advice

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Other Host Wait can result from any of the following causes: asynchronous I/O, gateways, or the use of NFS and TP monitors. Check the statements and programs suffering from this state and check whether the above resources are being utilized efficiently.

High Memory Wait

Your instance has spent much of its In Oracle time waiting for memory.

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