Open port 80
Open flle /etc/sysconfig/iptables:
# vi /etc/sysconfig/iptables
Append rule as follows:
-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
Save and close the file. Restart iptables:
# /etc/init.d/iptables restart
If when you are trying to login to Oracle 10G on linux you get :
ORA-01034: ORACLE not available
ORA-27121: unable to determine size of shared memory segment
Linux Error: 13: Permission denied
This is caused by Oracle installer not setting setuid on $ORACLE_HOME/bin/oracle.
To fix do:
$ cd $ORACLE_HOME/bin
$ chmod 6751 oracle
The colours in the BASH shell might look on when using the full GUI window environment, but when you remoted in and just using a black puTTY shell, they can make things hard to read.
Here’s how to turn them off,
for a single commnd,
or all future commands,
via How to turn on or off colors in bash.