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Recovering from a System Panic
A system panic simply means that the operating system encountered a
condition that it did not know how to respond to, so it halted your system.
System panics are rare and not always the result of a catastrophe. They
sometimes occur at boot if your system previously was not shut down properly.
Sometimes they occur as the result of a hardware failure. In a clustered
HP-UX environment, a diskless client node will panic if too much time has
elapsed since its last communication with its server. This could be the result of
nothing more than a LAN cable that has been disconnected for too long.
Recovering from a system panic can be as simple as rebooting your system.
If you have an up-to-date set of le system backup or system recovery tapes,
worst case scenario would involve reinstalling the operating system and
the
restoring any les that were lost or corrupted. If this situation was caused by a
rare hardware failure such as a disk head crash, you will of course have to have
the hardware xed before you can perform the reinstallation.
It is important to maintain an up-to-date backup of the les
Note
on your system so that, in the event of a disk head crash or
similar situation, you can recover your data. How frequently
you update these backups depends on how much data you can
a ord to lose. For information on how to back up data, refer to
System Administration Tasks .
Dealing With Problems
9
9-7
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