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Using the DISPLAY Command

Using the DISPLAY Command

Display type

EPILOG produces four different types of data displays: DETAIL SUMMARY, resource, and COLLECTOPT. Display Typeson page 65 discusses these. DETAIL is the default.

Workload

The DETAIL and SUMMARY displays require that a workload be specified. A workload is simply a PSB group that allows you to focus your tuning efforts on specific PSBs. Workload specifications are discussed in Workloadson page 70.

Date/time

The date and time specification limits the display to a particular set of time intervals. If you did not supply date/time information, EPILOG tries to process the entire set of online data, beginning with the oldest and ending with the most current. The time specifications are quite flexible; see Date/Time Specificationson page 73.

Exceptions

Exceptions are used with DETAIL and SUMMARY displays to select only specific kinds of intervals, such as all threads that spent more than 20% of their time waiting for database access.In this way, you can select only those intervals during which the service goals were not achieved.

For additional information on how to use this keyword, see Exceptionson page 77.

Miscellaneous options

Each display type has its own array of optional keywords and parameters. See Miscellaneous Keywordson page 84 for a list of the optional keywords for the DISPLAY command.

Introduction

The DISPLAY command has five categories of keywords.The syntax of the DISPLAY command is:

DISPLAY

display type workload - date/time - exceptions - miscellaneous options -

64

OMEGAMON II for DBCTL Historical Component (EPILOG) Reference Manual Version 510

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