I'm connecting to Oracle database regularly. On one particular environment I'm getting the following errors in trace files:
Network protocol error on first data after new connect
Probable error (ORA-28546) in network administration
Breaking the connection before proto/dty negotiation, error raised 3113
Trace file C:\app\Administrator\diag\rdbms\mytest\mytest\trace\mytest_ora_2772.trc
Oracle Database 11g Release 11.2.0.1.0 - 64bit Production
Windows NT Version V6.1 Service Pack 1
CPU : 4 - type 8664, 4 Physical Cores
Process Affinity : 0x0x0000000000000000
Memory (Avail/Total): Ph:3369M/8191M, Ph+PgF:10099M/16381M
VM name : VMWare Version (6)
Instance name: mytest
Redo thread mounted by this instance: 1
Oracle process number: 63
Windows thread id: 2772, image: ORACLE.EXE (SHAD)
However I can't reproduce it anywhere else, is it related to a network configuration or is there something I didn't configure correctly in Oracle?