Sqlplus to database taking ages

Question

Windows 2003 SP2 R2
Oracle DB 11.1.0.7
Oracle iAS 10.2.0.1
Two node RAC system servers(vtrt1-ora10, vtrt1-ora11), database-vttest(vttest1,vttest2)
All Ip addresses and hostnames are correct (as it does eventually connect)
Problem:*
I have a two node RAC system.
If I tnsping vttest and then ping vttest1 (my instance name), the result in both cases shows a steady 10 to 30ms, however, in the case of vttest (db name), there is a really long pause.
tnsping vttest - 30ms - however, it actually took 12 seconds to return
tnsping vttest1 - 30 ms - returned in less than a second
Now, when I log into sqlplus system/xxx@vtest, it can take around 12 seconds, whereas sqlplus system/xxx@vttest1 is around a second.
This is the same when I go into sqlplus:
sqlplus system/xxx@vttest - 12 seconds
sqlplus system/xxx@vttest1 - less than a second
In both cases, it goes through the same sqlnet.ora and tnsnames.ora, but I cannont prove the problem. In the case of tnsping, it must obviously take the 10 seconds before it tries the ping, so the 10 seconds are not accounted for.
Evidence:
PING:*
D:\>ping vtrt1-ora10
Pinging vtrt1-ora10 [10.210.140.108] with 32 bytes of data:
Reply from 10.210.140.108: bytes=32 time<1ms TTL=128
Reply from 10.210.140.108: bytes=32 time<1ms TTL=128
Reply from 10.210.140.108: bytes=32 time<1ms TTL=128
Reply from 10.210.140.108: bytes=32 time<1ms TTL=128
Ping statistics for 10.210.140.108:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
D:\>ping vtrt1-ora10-priv
Pinging vtrt1-ora10-priv [10.0.0.3] with 32 bytes of data:
Reply from 10.0.0.3: bytes=32 time<1ms TTL=128
Reply from 10.0.0.3: bytes=32 time<1ms TTL=128
Reply from 10.0.0.3: bytes=32 time<1ms TTL=128
Reply from 10.0.0.3: bytes=32 time<1ms TTL=128
Ping statistics for 10.0.0.3:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
D:\>ping vtrt1-ora10-vip
Pinging vtrt1-ora10-vip [10.210.140.214] with 32 bytes of data:
Reply from 10.210.140.214: bytes=32 time<1ms TTL=128
Reply from 10.210.140.214: bytes=32 time<1ms TTL=128
Reply from 10.210.140.214: bytes=32 time<1ms TTL=128
Reply from 10.210.140.214: bytes=32 time<1ms TTL=128
Ping statistics for 10.210.140.214:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
TNSPING:*
D:\>tnsping vttest
TNS Ping Utility for 32-bit Windows: Version 10.1.0.4.2 - Production on 25-JUN-2010 12:19:19
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
D:\oracle\product\10.1\FRHome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521)) (ADDRESS = (PROTO
COL = TCP)(HOST = vtrt1-ora11-vip)(PORT = 1521)) (LOAD_BALANCE = yes) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME
= VTTEST)))
OK (30 msec)
(+NOTE: This actually took 12 seconds to complete+)
D:\>tnsping vttest1
TNS Ping Utility for 32-bit Windows: Version 10.1.0.4.2 - Production on 25-JUN-2010 12:19:47
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
D:\oracle\product\10.1\FRHome_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521)) (CONNECT_DATA = (
SERVER = DEDICATED) (SERVICE_NAME = VTTEST) (INSTANCE_NAME = VTTEST1)))
OK (10 msec)
(+NOTE: Actually took less than a second+)
SQLNET.ORA:_
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT, ONAMES, HOSTNAME)
LISTENER.ORA:_
LISTENER_VTRT1-ORA10 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.210.140.108)(PORT = 1521)(IP = FIRST))
TNSNAMES.ORA:_
# tnsnames.ora Network Configuration File: D:\oracle\product\10.1\FRHome_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
REP_VTRT1-ORA10_FRHOME1. =
(ADDRESS = (PROTOCOL = tcp)(HOST = vtrt1-ora10)(PORT = 1950))
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = PLSExtProc)
# tnsnames.ora Network Configuration File: D:\oracle\product\11.1.0\db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
LISTENERS_VTTEST =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora11-vip)(PORT = 1521))
VTTEST1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = VTTEST)
(INSTANCE_NAME = VTTEST1)
VTTEST2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora11-vip)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = VTTEST)
(INSTANCE_NAME = VTTEST2)
LISTENER_VTTEST1 =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521))
LISTENER_VTTEST2 =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora11-vip)(PORT = 1521))
VTTEST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora10-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = vtrt1-ora11-vip)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = VTTEST)
Things I have tried without success (including reboot of services in all cases):_
Using ip addresses in the above files instead of host names.
Removing/adding LDAP to the list of methods in the sqlnet.ora.
Various restarts etc.
The kncok on effect of this is that the forms app can take around 30 seconds to login from a remote site, which is unacceptable, however, on a remote site, 10 seconds would be acceptable.
Thank you for all replies.

Answer 1

Please check this
Sqlnet connection via TCP Hangs for about 10seconds Before Connection is Established [ID 1071330.1]