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Service functions will not interrupt the console display unless you have already
set debug mode. Sign-on is necessary to access DST. All active service functions
end.
v Start DST in debug mode on IPL
Service functions can interrupt the normal operating system process to display
debug information. When an operating display appears, you can enter DST by
performing the System Request Key procedure. This displays the Use Dedicated
Service Tools (DST) display without requiring you to log on to DST. For more
information on the System Request Key procedure, see “Pressing the System
Request Key while the system is operational” on page 7.
Start a service tool
Select this option from the Use Dedicated Service (DST) Tools display.
Note: The Start a service tool option is also available from the System Service Tools
(SST) display.
It displays the available service functions.
Options on the Start a Service Tool display
The following options are available from the Start a Service Tool display:
v Display/Alter/Dump
v Licensed Internal Code log
v Licensed Internal Code trace
v Hardware service manager
v Main storage dump manager
v Product activity log
v Operator panel functions
v Performance data collector
v Work with communications trace (available only on systems with SST)
Display/Alter/Dump: Select this option from the Start a Service Tool display.
Note: The Display/Alter/Dump option is also available under System Service Tools
(SST).
This option allows you to display or change virtual storage data. It also allows you
to dump the data to removable media (tape or optical) or a printer.
You can then use an output device to perform the following tasks:
v To view the data from storage on the display
– Select the Display/alter storage option to display unformatted data and to
change the contents of storage. Use the keyboard to scroll forward or
backward to view the storage information.
– Select the Display/alter storage option to generate a formatted dump of the
contents in storage. The display is inhibited while the format function is
running. When the formatting process is complete, use the keyboard to
search, scroll (forward or backward), or shift (left or right) the output.
v To generate a formatted dump of the data in storage to an output device.
– Select one of the following:
- Dump to printer
28 Service Functions V5R2