Database reacting very slowly when enable dns

Hi frennds,
Now i have installed RHEL 5.5 on my server. And installed Oracle Database 11g Enterprise Edition Release 11.2.0.1.0.
My problem is when we set DNS values in network settings for getting connected with internet, application taken too long time to retrieve values from database. If we remove values from DNS and made the server disconnected from internet, then no issue. But we need internet connection in our server.
Previously i have installed RHEL 5.3 and Oracle 10g.. at that time i didn't faced this type of problem.
Please help me to overcome this problem
Thanks in advance

Thank u for reply friend.
In network proxy, I have chosen "Direct internet connection". And in "Advanced configuration" tab, ip addresses in Ignore Host List are "localhost" and 127.0.0.0/8.
content in my "resove.conf" file
; generated by /sbin/dhclient-script
nameserver 202.160.161.3
nameserver 202.138.96.2
nameserver 202.138.100.103
content in my "nsswitch.conf" file
# /etc/nsswitch.conf
# An example Name Service Switch config file. This file should be
# sorted with the most-used services at the beginning.
# The entry '[NOTFOUND=return]' means that the search for an
# entry should stop if the search in the previous entry turned
# up nothing. Note that if the search failed due to some other reason
# (like no NIS server responding) then the search continues with the
# next entry.
# Legal entries are:
#     nisplus or nis+          Use NIS+ (NIS version 3)
#     nis or yp          Use NIS (NIS version 2), also called YP
#     dns               Use DNS (Domain Name Service)
#     files               Use the local files
#     db               Use the local database (.db) files
#     compat               Use NIS on compat mode
#     hesiod               Use Hesiod for user lookups
#     [NOTFOUND=return]     Stop searching if not found so far
# To use db, put the "db" in front of "files" for entries you want to be
# looked up first in the databases
# Example:
#passwd: db files nisplus nis
#shadow: db files nisplus nis
#group: db files nisplus nis
passwd: files
shadow: files
group: files
#hosts: db files nisplus nis dns
hosts: files dns
# Example - obey only what nisplus tells us...
#services: nisplus [NOTFOUND=return] files
#networks: nisplus [NOTFOUND=return] files
#protocols: nisplus [NOTFOUND=return] files
#rpc: nisplus [NOTFOUND=return] files
#ethers: nisplus [NOTFOUND=return] files
#netmasks: nisplus [NOTFOUND=return] files
bootparams: nisplus [NOTFOUND=return] files
ethers: files
netmasks: files
networks: files
protocols: files
rpc: files
services: files
netgroup: nisplus
publickey: nisplus
automount: files nisplus
aliases: files nisplus
Result by $netstat -ap | grep '[0-9]\.[0-9]'
[oracle@myserver ~]$ netstat -ap | grep '[0-9]\.[0-9]'
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 192.168.0.197:61266 maa03s16-in-f0.1e100.:https ESTABLISHED -
tcp 0 0 192.168.0.197:16566 par03s12-in-f15.1e100:https TIME_WAIT -
tcp 0 0 192.168.0.197:27660 bom03s02-in-f21.1e100:https ESTABLISHED -
tcp 0 0 ::ffff:192.168.0.197:16355 ::ffff:192.168.0:ricardo-lm ESTABLISHED -
tcp 0 0 ::ffff:192.168.0.197:39622 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39621 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39618 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39619 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39616 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39598 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39597 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39595 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39614 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39613 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39611 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39608 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39609 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39606 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39605 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39603 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39600 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.168.0.197:39601 ::ffff:192.168.0.1:ncube-lm TIME_WAIT -
tcp 0 0 ::ffff:192.1:personal-agent ::ffff:192.168.0.212:44151 ESTABLISHED -
tcp 0 0 ::ffff:192.1:personal-agent ::ffff:192.168.0.212:44152 ESTABLISHED -
unix 2 [ ACC ] STREAM LISTENING 866187 9776/tnslsnr /var/tmp/.oracle/s#9776.1
unix 2 [ ACC ] STREAM LISTENING 866192 9776/tnslsnr /var/tmp/.oracle/s#9776.2
unix 2 [ ACC ] STREAM LISTENING 12186 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
unix 3 [ ] STREAM CONNECTED 997577 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
unix 3 [ ] STREAM CONNECTED 867200 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
unix 3 [ ] STREAM CONNECTED 328869 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
unix 3 [ ] STREAM CONNECTED 166231 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
unix 3 [ ] STREAM CONNECTED 12192 - /tmp/scim-bridge-0.3.0.socket-0@localhost:0.0
while i was trying "$netstat -ap | grep '[0-9]\.[0-9]' | grep ':1521'" , following information was displayed
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
And i had logged in as root and try for netstat -ap | grep '[0-9]\.[0-9]' | grep ':1521... No one result came.
I have installed Apache tomcat and oracle database in same server. Then In my case should i include anything in hosts file?
Edited by: 931246 on Feb 27, 2013 11:45 PM

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