Hi,as I mentioned,i've located the issue, but I can't install it as the info it gave:

[root@station2 mysql]# ./scripts/mysql_install_db --user=mysql --datadir=/data/mysql/
Installing MySQL system tables...
./bin/mysqld: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

Installation of system tables failed! Examine the logs in
/data/mysql/ for more information.

You can try to start the mysqld daemon with:

shell> ./bin/mysqld --skip-grant &

and use the command line tool ./bin/mysql
to connect to the mysql database and look at the grant tables:

shell> ./bin/mysql -u root mysql
mysql> show tables

Try 'mysqld --help' if you have problems with paths. Using --log
gives you a log in /data/mysql/ that may be helpful.

The latest information about MySQL is available on the web at
http://www.mysql.com/. Please consult the MySQL manual section
'Problems running mysql_install_db', and the manual section that
describes problems on your OS. Another information source are the
MySQL email archives available at http://lists.mysql.com/.

Please check all of the above before mailing us! And remember, if
you do mail us, you MUST use the ./bin/mysqlbug script!


I've tried to install it several times, it can't go further more.


any idea will be appreciated.

Thanks

mysql is installed by default on RHEL6

so
how did you try to install it

if for some reason you opted to NOT install the default software at time of install ,then
problem solved

Looks like mysql is installed to me...

Post the output of
yum whatprovides libstdc++.so.6

thanks for your suggestion, actually i just want to install the mysql manually, i've downloaded it, named "mysql-5.1.40-linux-i686-icc-glibc23.tar.gz".
also, i've tried to follow the instructions for installing the LAMP environment from official website. it says, if you faced this situation, you can download the epel repo and install it from internet directly.
For me, I can't, since my test servers can't connect to the Internet. that's the reason i'd like to do it that way.

[root@station2 ~]# yum provides libstdc++.so.6
Loaded plugins: product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
LOCAL | 3.9 kB 00:00 ...
libstdc++-4.4.7-4.el6.i686 : GNU Standard C++ Library
Repo : LOCAL
Matched from:
Other : libstdc++.so.6

i've already installed it from default repo, it can't find it either.

well here is your problem
BUY the required support contract !!!!

and then REGISTER IT with redhat !!!

redhat is NOT FREE
you HAVE to buy the required support contract
or you DO NOT!!! install anything !!!

or



if you are NOT going to buy the support contract
install CentOS 6.6 or 7.1

that's true,this is also the reason why installed it on the test server.
Without connecting to Internet, how to build the LAMP environment on the test server.
Here are the details of the instructions:
1.wget http://syslab.comsenz.com/downloads/...glibc23.tar.gz
2. ./scripts/mysql_install_db --user=mysql --datadir=/data/mysql
3. if you were facing "./bin/mysqld: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory"
then
yum -y install epel-release
yum -y install *libstdc++*

as you can see, it can be done only for the internet.