z/VM: System Messages and Codes Š CP - z/VM - IBM

HCP9102E HCP9107D
an isolated event that will not repeat itself. However,
there is a risk in varying the failed processor back
online because the error may repeat itself. And if the
error does repeat, there is no guarantee that the error
will again occur at a point where normal operation can
continue; the system might terminate next time.
HCP9102E MACHINE CHECKS: 2ND ERROR
WHILE HANDLING 1ST.
Explanation: Before the machine-check handler
finished handling one machine check, another machine
check (or possibly a check-stop) occurred.
System Action: System operation will stop. The
termination may or may not be followed by an automatic
software re-IPL.
Operator Response: Watch for a following message
to see if an automatic software re-IPL occurs. If it does
not occur, consider notifying system support personnel
to look at the problem while the system is down, instead
of manually re-IPLing immediately.
HCP9103E THE MCIC IS NOT VALID. (CAUSE OF
INTERRUPTION IS MISSING.)
Explanation: Message HCP9101I describes the
machine check that had an invalid MCIC (machine
check interrupt code). The bits in the first 2 bytes of the
MCIC identify a cause or type of error, and at least one
of these bits must be a 1-bit. In this case, however,
none of the expected bits was present. The architecture
does not permit this; therefore, there is not a proper
machine check to work with.
System Action: System operation stops. There is not
any automatic software re-IPL afterward.
Operator Response: Take a stand-alone dump and
contact your system support personnel.
Programmer Response: Contact your IBM Support
Center personnel to diagnose and correct the hardware
problem.
HCP9104I The storage page at xxxxxxxx will be
taken offline if possible.
Explanation: This message relates to the machine
check that message HCP9101I describes.
That machine check identifies a storage error at the
page address given in the present message.
Message HCP9101I precedes this message.
System Action: The system has noted that the page
is in error. If the page is part of the paging pool, it is
taken offline as soon as it becomes available and is not
used again. However, even if it is a part of the paging
pool, there is no guarantee that it can be taken offline
any time soon; for example, it may be locked in storage
for an indefinite time before becoming available to be
460 z/VM: System Messages and Codes — CP
varied offline. In the meantime, the page can cause
more errors.
Operator Response: None.
HCP9105D Machine-check warning: A power or
cooling failure is imminent.
Explanation: Message HCP9101I precedes this
message and identifies a machine check.
Message HCP9105W indicates there is a
machine-check warning condition present in that
machine check. This indicates that system power or
cooling is failing.
System Action: The system action is uncertain. The
hardware may fail almost immediately, or in seconds or
minutes, or possibly never. Meanwhile, system
operation continues. The warning condition is sent to
virtual machines to give them a chance to checkpoint
themselves, if possible.
Operator Response: If the hardware does not fail
instantly, send a message to all users warning them to
prepare for the failure.
Once this message is issued, the system runs disabled
for further warning conditions. If the system is still
running after several minutes, you may wish to
determine if the problem has gone away or if it is still
there. To do so, enter:
SET MODE RECORD
This will enable the system once again for warning
conditions. If the problem is still present, you should
immediately receive this same message again.
HCP9106I A machine-check degradation is
present. There may be possible buffer
or TLB damage.
Explanation: Message HCP9101I precedes this
message and identifies a machine check.
Message HCP9106I indicates that there was a
machine-check degradation condition present in that
machine check.
System Action: The system may run more slowly
because of the loss of some of the hardware.
Operator Response: Notify your system support
personnel. Send a message to the users to notify them
that performance may decrease.
HCP9107D Recording was disabled for “system
recovery” machine check.
Explanation: The system has disabled itself from
recording further system-recovery machine checks. It
does this after 12 system-recovery type machine checks
occur. This is done so that these machine checks will