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Appendix A. OS/400 Operating System
DST in OS/400 full paging environment ....281
DST in OS/400 limited paging environment . . . 282
System Service Tools (SST) .........282
Accessing system service tools.......282
Selecting SST from the problem handling
option..............283
Entering the Start System Service Tools
(STRSST) command .........283
SSToptions.............283
Start a service tool..........283
Work with active service tools ......284
Workwithdiskunits.........284
Work with diskette data recovery.....284
Work with system partitions ......289
Work with system capacity .......289
Work with system security .......289
Work with service tools user IDs .....289
Function keys (SST) ..........289
Online problem analysis and resolution ....290
Introduction .............290
System-detected problems ........290
Problemlog............291
Messages relating to hardware failures . . . 291
Customer-detected problems .......292
Service support facility .........293
Displaying OS/400 PTFs .........293
OS/400 or LIC APAR information ......293
How to reset an I/O processor card while the
system is up and running .........295
Varying configuration descriptions on and off . . 295
Commonly used OS/400 service commands . . . 296
Work with System Value (WRKSYSVAL)
Command.............298
Commonly used system values .....299
Service attributes (DSPSRVA or CHGSRVA)
commands .............299
Commonly used service attributes ....299
Change Transmit Level (CHGXMTLVL)
command .............301
Work with Hardware Products (WRKHDWPRD)
Command.............302
Introduction ............302
Using the configuration description label
information to prepare for a system upgrade . 302
Using the configuration description label
information after a system upgrade ....304
Verify commands ............308
Commonly used verify commands .....308
VFYCMN ............308
VFYOPT .............308
VFYPRT .............308
VFYTAP .............308
Verify communications .........308
Introduction ............308
Procedure ............309
Test descriptions ..........309
Communications tests ..........316
Wireless LAN adapter card indicators ....316
Communications interface trace ......316
Test description...........316
Data Terminal Ready (DTR) ......317
Data Set Ready (DSR) ........317
RequestToSend(RTS)........317
Ready For Sending (CTS) .......317
Carrier Detect (CD) .........317
Concurrent LPDA-2 tests ........317
Test description...........317
DST in OS/400 full paging environment
DST operates in stand-alone (non-paging), limited, and full paging environments.
The DST tools and functions vary depending on the paging environment (see
“System paging environments” on page 2) and the OS/400 operating system that is
used.
The full paging environment is used during normal system operation. The
following options appear on the Use Dedicated Service Tools (DST) display for
the OS/400 operating system:
v Perform an IPL
v Install the operating system
v Work with Licensed Internal Code
v Work with disk units
v Work with DST environment
v Select DST console mode
v Start a service tool
© Copyright IBM Corp. 1997, 2002 281