Spotlight on Oracle 10.10 - Release Notes

Page Outs Alarm

This alarm is activated when the number of pages being written to disk exceeds a threshold. Sustained high paging rates can adversely effect the performance of a system.

Only those pages that have been altered are written to disk. Pages that have not been changed are dropped.

When this alarm is current, you should:

• Look at the Processes page on the Processes drilldown to see which process is causing the paging. Look at the Page Faults/sec column. This will help you determine the cause of paging.

  A high level of page faults and page outs indicates memory thrashing. If this is the case, the system may require more memory.

• Look at the Paging chart on the Summary page of the Memory drilldown. This shows how long the high paging has been occurring. Short periods of high paging are acceptable, but if the paging rate is high for a sustained period, there may be a problem with the system.
• Consider adding more physical memory to the system.
• Stop unnecessary services and processes on the system.

Related Topics

Processes Page

Summary Page