Oracle tnsping slow

Hi experts,
I've  Oracle 11.2.0.4.0 running on windows server 2003 64-bit but when I tried to ping the listener with tnsping it is quite long time to give a responce. The network seems ok, below the response times client side and server side:

CLIENT SIDE
C:\>tnsping ORCL_PROD 5
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-APR-2015 10:45:24
Copyright (c) 1997, 2005, Oracle.  All rights reserved.
Used parameter files:
C:\oracle\product\10.2.0\client_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS_LIST= (ADDRESS= (PROTOCOL=TCP) (Host=170.10.10.20) (Port=1521))) (CONNECT_DATA= (SERVICE_NAME=ORCL)))
OK (3140 msec)
OK (2150 msec)
OK (540 msec)
OK (850 msec)
OK (2100 msec)

SERVER SIDE
C:\>tnsping ORCL_PROD 5
OK (0 msec)
OK (10 msec)
OK (10 msec)
OK (0 msec)
OK (0 msec)


What may be the problem?
What Can I check?

Thanks in advance!
ralph_reaAsked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
I would presume issues on the network card on the client itself...
what about some network ping (not tnsping), is it also slow? even when specifying a certain packet size?
slightwv (䄆 Netminder) Commented:
I would also do a tracert to see if one of the hops has issues:
tracert 170.10.10.20


Check the network cables.
ralph_reaAuthor Commented:
CLIENT SIDE:
C:\>tracert 170.10.10.20
Tracing route to ORCL [170.10.10.20]
over a maximum of 30 hops:

  1    33 ms    31 ms    33 ms  10.10.11.1
  2    75 ms   392 ms    60 ms  190.100.200.110
  3   365 ms    37 ms    45 ms  ORCL [170.10.10.20]


SERVER SIDE:
C:\>tracert 170.10.10.20
Tracing route to ORCL [170.10.10.20]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  ORCL [170.10.10.20]

Trace complete.

Any idea??
slightwv (䄆 Netminder) Commented:
What about the normal ping suggested above?

ping 170.10.10.20


Don't need server side numbers.

Seems to have issues between the client and 190.100.200.110.

Are other clients on the same subnet having similar issues?
If so, the issue is in the shared network somewhere.
If not, the issue is in the non-shared parts of the network:  switch port, client cable, client NIC, client configuration.

Start troubleshooting 101:
1: change the network cable on the client, test.
2: If possible, change the NIC in the client machine, test.
3: change the port on the closest switch, test.

Keep swimming upstream until you find out where the problem is.

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