Listener trace file: Winsock 54 errors

Question

I am seeing many of the following error ("soc nnn error - operation=5, ntresnt[0]=517, ntresnt[1]=54...") in my Listener trace file.
This is on an Oracle 9.2.0.4 server (Windows 2003 Server R2).
If my intepretation of the Listener trace is correct, this corresponds to Winsock Error 10054 (Connection reset by peer).
SQL*net trace files at the client side (a separate host) do not indicate a corresponding error - all the trace files appear "clean".
So what is the peer in this context? My initial thought was that the Oracle server had established a session for the client, but then the client
had appeared to disappear from the network. But I would have expected to see something in the client trace files at the same time.
This is an example from the Listener trace file.
nscon: sending NSPTRD packet
nspsend: entry
nspsend: plen=65, type=5
nttmwr: entry
nttmwr: socket 332 had bytes written=65
nttmwr: exit
nspsend: 65 bytes to transport
nspsend: packet dump
nspsend: 00 41 00 00 05 00 00 00 |.A......|
nspsend: 00 37 28 41 44 44 52 45 |.7(ADDRE|
nspsend: 53 53 3D 28 50 52 4F 54 |SS=(PROT|
nspsend: 4F 43 4F 4C 3D 74 63 70 |OCOL=tcp|
nspsend: 29 28 48 4F 53 54 3D 31 |)(HOST=1|
nspsend: 39 32 2E 31 36 38 2E 32 |92.168.2|
nspsend: 2E 32 35 34 29 28 50 4F |.254)(PO|
nspsend: 52 54 3D 34 34 35 37 29 |RT=4457)|
nspsend: 29 |) |
nspsend: normal exit
nscon: exit (0)
nsdo: nsctxrnk=0
nsdo: normal exit
nsrah: entry
nsrah: reading (asynchronously) from transport...
nsrah: ...into overflow area...
nttmrd: entry
ntt2err: entry
ntt2err: soc 332 error - operation=5, ntresnt[0]=517, ntresnt[1]=54, ntresnt[2]=0
ntt2err: exit
ntt2err: entry
ntt2err: Read unexpected EOF ERROR on 332
ntt2err: exit
nttmrd: socket 332 had bytes read=0
nttmrd: exit
nserror: entry
nserror: nsres: id=4, op=68, ns=12537, ns2=12560; nt[0]=507, nt[1]=0, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
nsrah: exit (-1)
nsclose: entry
nstimarmed: entry
nstimarmed: no timer allocated
nstimarmed: normal exit
Any thoughts/recommendations on this would be gratefully received, thanks.
Andy.

Answer 1

nspsend: 4F 43 4F 4C 3D 74 63 70 |OCOL=tcp|
nspsend: 29 28 48 4F 53 54 3D 31 |)(HOST=1|
nspsend: 39 32 2E 31 36 38 2E 32 |92.168.2|
nspsend: 2E 32 35 34 29 28 50 4F |.254)(PO|
nspsend: 52 54 3D 34 34 35 37 29 |RT=4457)|
So what is the peer in this context?192.168.2.245 port=4457
go to http://download.oracle.com/docs/cd/B10501_01/network.920/a96580/troubles.htm
then Find: EOF ERROR