Packet writer failure on one client
All of my users are connected to the Oracle server. One m/c suddenly
stopped working and is giving error tns packet writer failure. Basic
network connections are working like ping, etc. Could it be a virus?
Sure, anything's possible. If the problem is isolated to a single client and
no other users are having the same problem, then it's possible that the
failing client has picked up a bug somewhere. It's also possible that they've
installed a personal firewall, they've altered their networking configuration
(or a recently-installed application has done that without their knowledge),
or even that the NIC on the system is starting to fail.
SQL*Net tracing would provide more information, but that may be overkill for
now. Your instincts are probably right and getting the latest virus scanner
and current patterns to perform a full system scan is probably the first order
This was first published in June 2004