NonStop S-Series Hardware Installation and FastPath Guide (G06.29+)

Troubleshooting
HP NonStop S-Series Hardware Installation and FastPath Guide—541880-002
D-17
Dumping Processor Memory to Disk Online
Prerequisites
Before you perform a processor dump to disk:
•
If dumpfile already exists, it must be empty. Its EOF must be zero.
•
You must not prime or reset the processor beforehand.
•
You must have access to:
°
A second processor that is running
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A connected terminal or workstation with a running command interpreter
°
A disk with enough space to store the dump
A processor dump requires 256 extents. Each extent should equal slightly
more than 1/256 the size of the processor memory. For example, a processor
with 256 megabytes of main memory requires 256 extents of at least 512
pages each.
Procedure for Dumping Processor Memory to Disk
If you do not have failure-recovery software installed on your system, perform the
following steps to dump processor memory to disk on a running system.
For complete syntax and considerations for the TACL RECEIVEDUMP command and
the RCVDUMP utility, and the error and informational messages that they generate,
see the Guardian User’s Guide .
1. Log on to the OSM or TSM Low-Level Link.
2. On the toolbar, click Processor Status.
The Processor Status dialog box appears.
3. Write down the status message displayed in the Processor Status dialog box for
the halted processor.
Do this so that you have complete information about the halt when you notify your
system manager or service provider after completing these steps.
4. Make sure that the processor you want to dump is halted.
If the processor is not halted (its state is “Executing NonStop OS”), use the
Processor Status dialog box to perform a halt action on it:
a. Select the processor you want to dump to disk.
b. In the Actions list, select Halt.
c. Click Perform action.
5. Log on to a TACL session as the super ID (255,255).
6. Ensure that the disk file dumpfile either does not exist or is empty.
Note. You must be assigned the super ID (255,255) to issue the TACL RECEIVEDUMP
command (or run the RCVDUMP utility) to obtain a dump of a halted processor.