IInstalling and Configuring Oracle 12c in RHEL 7.2 1. Verify that your system has correct hostname, static IP address and distribution version, distribution version, using following commands. [root@teslarh ~]$ hostname [root@teslarh ~]$ ifconfig | grep inet [root@teslarh ~]$ lsb_release -a 2. Hostname & DNS Setup Verify IP Address and Hostname and add an entry in the /etc/hosts. echo "192.168.229. "192.168.229.50 50 dbserver.test.local dbserver.test.local dbserver" >> /etc/hosts /etc/hosts [root@teslarh ~]$ vim /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost.l ocaldomain 192.168.0.58 teslarh
3. Now change the SELinux mode to permissive and restart the system to make Permanent changes for selinux. [root@teslarh ~]$ vim /etc/sysconfig/selinux [root@teslarh ~]$ init 6
4. Oracle Installation Prerequisites 4.1. Open a Shell sesión or terminal emulator 4.2. Install the Oracle YUM Repo GPG Key [root@teslarh ~]$ su [root@teslarh ~]$ wget http://public-yum.oracle.co http://public-yum.oracle.com/RPM-GP m/RPM-GPG-KEY-oracle-o G-KEY-oracle-ol7 l7 -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
4.3. Download the Needed Oracle Repo [root@teslarh ~]$ cd /etc/yum.repos.d/ /etc/yum.repos.d/ [root@teslarh ~]$ wget http://public-yum http://public-yum.oracle.co .oracle.com/public-yum-ol m/public-yum-ol7.repo 7.repo 4.4. Install the Oracle Pre-Install RPM [root@teslarh ~]$ yum install oracle-rdbms-server-12cR1-preinstall 4.5. Update the System [root@teslarh ~]$ yum update
5. Add the following lines to the "/etc/security/limits.conf" "/etc/security/limits.conf" file. [root@teslarh ~]$ vim /etc/security/limits.conf /etc/security/limits.conf oracle oracle oracle oracle oracle oracle
soft hard soft hard soft hard
nofile nofile nofile nproc nproc nproc nproc stack stack
1024 65536 2047 16384 10240 32768
6. Configuring System for Oracle Installation 6.1. Create the new groups Oracle inventory, OSDBA and OSOPER for Oracle installation. [root@teslarh [root@tesl arh ~]$ groupadd -g 54321 oracle [root@teslarh [root@tesl arh ~]$ groupadd -g 54322 dba [root@teslarh [root@tesl arh ~]$ groupadd -g 54323 oper
Create Oracle Groups
6.2. Create the new user oracle and add the user to already created groups. [root@teslarh ~]$ useradd -u 54321 -g oracle -G dba,oper oracle [root@teslarh ~]$ usermod -a -G wheel oracle [root@teslarh ~]$ passwd oracle
Create Oracle User
7. If you have the Linux firewall enabled, you will need to disable or configure it, as shown here shown here or here. or here. To To disable it, do the following. [root@teslarh ~]$ systemctl stop firewalld [root@teslarh ~]$ systemctl disable firewalld 8. Create the following directory for installing Oracle and change the ownership and grand permission to the newly created directory using recursive. [root@teslarh ~]$ mkdir –p /u01/app/oracle/product/12.1.0 /u01/app/oracle/product/12.1.0.2/dbhome_ .2/dbhome_1 1 [root@teslarh ~]$ chown -R oracle:oinstall /u01 [root@teslarh ~]$ chmod -R 775 /u01 [root@teslarh ~]$ ls –l /u01
Create Oracle Directory
9. Switch to root user to create environment for oracle user. You can skip this step, if you’re already using root login. [root@teslarh ~]$ su – root
10. Next, we need to add the environmental variable for oracle user. Open and edit the profile file of oracle user and append the oracle environment entries. Here we don’t need to
use sudo command, as we are already logged in as root user. [root@teslarh ~]$ vim /home/oracle/.bash_profile Append the below Environment Entry. Save and exit the vi editor using wq!. ## Oracle Env Settings export TMP=/tmp export TMPDIR=$TMP export ORACLE_HOSTNAME=teslarh export ORACLE_UNQNAME=orcl export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=$ORACLE_BASE/product/12.1.0.2/dbhome_1 export ORACLE_SID=orcl ORACLE_SID=orcl export PATH=/usr/sbin:$PATH PATH=/usr/sbin:$PATH export PATH=$ORACLE_HOME/bin:$PATH export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib export CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
Add Environment Variables
Now exit from root user and login again as teslarh user and switch to oracle user. Again, this step is not required, if you are already using root account, just switch to oracle user for further instructions.
[root@teslarh ~]$ exit [root@teslarh ~]$ su - oracle
11. Downloading Oracle Packages I have already downloaded the zip package and extracted the contents of oracle installer. [root@teslarh ~]$ cd ~ [root@teslarh ~]$ ls [root@teslarh [root@tesl arh ~]$ unzip linuxamd64_12c_database_1of2.zip linuxamd64_12c_ database_1of2.zip [root@teslarh ~]$ unzip linuxamd64_12c_database_2of2.zip 12. 12. Installing Oracle 12c Database in Red Hat Enterprise Linux 7.2 12.1 After extracting, we will get database directory which has 2.6GB in size. So, next we can go-head and install the oracle. Let us start the installation by running runInstaller. Navigate the installer Directory and run the Installer. 12.2 Ingresar con Usuario Oracle
[root@teslarh ~] $ su - oracle [oracle@teslarh [oracle@teslar h ~]$ cd database/ [oracle@teslarh [oracle@teslarh ~]$ ./runInstaller Our Installer has been launched here. For every steps we need to move forward by Clicking Next or OK. 13. Post Installation After completing the Database installation, now move ahead to do some Post installation configuration. Open file oratab using oratab using vi editor. [root@teslarh ~]$ vim /etc/oratab /etc/oratab After opening file, search for the the following line. orcl:/u01/app/oracle/product/12.1 orcl:/u01/app/oracle/product/12.1.0/db_1:N .0/db_1:N And change the parameter N to Y as shown. orcl:/u01/app/oracle/product/12.1 orcl:/u01/app/oracle/product/12.1.0/db_1:Y .0/db_1:Y Restart the machine to take new changes. 14. Automating Database Startup and Shutdown on Other Operating Systems 14.1.
Directory to one of the following, depending on the operating system: [root@teslarh ~]$ cd /etc/init.d /etc/init.d
14.2.
Create a file called dbora, and copy the following lines into this file: [root@teslarh ~]$ touch dbora [root@teslarh ~]$ vim touch dbora #! /bin/sh # # Change the value of ORACLE_HOME ORACLE_HOME to specify the correct Oracle home # directory for your installation. ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_1 # # Change the value of ORACLE to the login name of the # oracle owner at your site. # ORACLE=oracle PATH=${PATH}:$ORACLE_HOME/bin HOST=`hostname` PLATFORM=`uname` export ORACLE_HOME PATH # if [ ! "$2" = "ORA_DB" ] ; then runuser -l $ORACLE $ORACLE $0 $1 ORA_DB ORA_DB if [ "$PLATFORM" = "Linux" ] && [ "$1" = "start" ] ; then touch /var/lock/subsys/dbora elif [ "$PLATFORM" = "Linux" ] && [ "$1" = "stop" ] ; then rm -f /var/lock/subsys/dbora fi exit fi # case $1 in 'start') $ORACLE_HOME/bin/dbstart $ORACLE_HOME & ;;
'stop') $ORACLE_HOME/bin/dbshut $ORACLE_HOME & rm -f /var/lock/subsys/dbora ;; *) echo "usage: $0 {start|stop}" exit ;; esac # Exit 14.3.
Change the group of the dbora file to the OSDBA group (typically dba), and set the permissions to 750: [root@teslarh ~]$ chgrp dba dbora [root@teslarh ~]$ chmod 750 dbora
14.4.
Create symbolic links to the dbora script in the appropriate run-level script directories, as follows: [root@teslarh ~]$ ln -s /etc/init.d/dbora /etc/rc.d/rc0.d/K01d /etc/rc.d/rc0.d/K01dbora bora [root@teslarh ~]$ ln -s /etc/init.d/dbora /etc/rc.d/rc3.d/S99dbora /etc/rc.d/rc3.d/S99dbora [root@teslarh ~]$ ln -s /etc/init.d/ /etc/init.d/dbora /etc/rc.d/rc5.d/S99dbora /etc/rc.d/rc5.d/S99dbora
14.5.
Startup and Shutdown Container Databases Databases (CDB) and Pluggable Databases (PDB) CREATE OR REPLACE TRIGGER open_pdbs AFTER STARTUP ON DATABASE BEGIN EXECUTE IMMEDIATE 'ALTER PLUGGABLE DATABASE ALL OPEN'; END open_pdbs; /
15. Installing Adobe Repository 15.1.
First add the following Adobe repositories for Flash Player based on your Linux systems. For 64-bit x86_64 Systems
[root@teslarh ~]$ rpm -ivh http://linuxdownloa http://linuxdownload.adobe.com/a d.adobe.com/adobe-relea dobe-release/adobese/adoberelease-x86_64-1.0-1.noarch.rpm [root@teslarh ~]$ rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux 15.2.
Updating Adobe Repository Next, we need to run the following command to update the Adobe’s own YUM repository to install Adobe Flash Player latest l atest version. [root@teslarh ~]$ yum update
15.3.
Installing Adobe Flash Player 11.3 Now run the following command command to install latest version of Flash Plugin on your Linux
systems. [root@teslarh ~]$ yum install flash-plugin nspluginwrapper alsa-plugins-pulseaudio libcurl [root@teslarh ~]$ yum install flash-plugin nspluginwrapper nspluginwrapper curl 15.4.
Verifying Flash Plugin Verify, the newly installed Flash Plugin on your favorite web browser and enjoy watching streaming multimedia files. That’s all for now, enjoy playing games and watching streaming videos on your browser
using Flash Player on systems.
Añadir / Quitar servicios al inicio del sistema Red-Hat, Cent OS chkconfig --list
cat /etc/inittab
Entrando al tema, podemos añadir o quitar servicios del siguiente modo: chkconfig --level on chkconfig --level off
Ejemplo: Queremos el servicio web httpd al inicio del sistema en los runlevels 3,4 y 5: chkconfig --level 345 httpd on
Y de un modo estandar si especificarle el runlevel: chkconfig --add mysql chkconfig --del mysql
sudo systemctl stop sshd.socket sudo systemctl stop sshd.service sudo /usr/bin/sshd -d
