We start with installation of packagesConfirm if you install have minimal 16G swap cache, on system.free -mAlmost installations have a minimal of 16G for swap, my system for example have a 128G memory - recently many docs confirms 16G of swap is ok for all memory configurations.Make the update for the entire system, update the packages you made this commands below like a root.yum updateyum install oracle-rdbms-server-11gR2-preinstall.x86_64Change the user oracle password:passwd oraclePlease verify the security by selinux files, modify this entry:/etc/selinux/configmodify to SELINUX=disabledattention: do not confuse this line, pay attention.reboot the systemIf you not reboot the system you receive messages like, permission denied to disable services below.And stop the services, because this services is consuming memory and resources (cpu).systemctl stop firewalldsystemctl stop iptablessystemctl disable firewalldsystemctl disable iptablessystemctl disable atdsystemctl disable bluetoothsystemctl disable postfixsystemctl disable soundsystemctl disable anacron systemctl disable atd systemctl disable cups systemctl disable cups-config-daemon systemctl disable gpm systemctl disable iptables systemctl disable kudzu systemctl disable lvm2-monitor systemctl disable microcode_ctl systemctl disable sendmail systemctl disable smartd systemctl disable auditd systemctl disable avahi-daemon systemctl disable bluetooth systemctl disable firstboot systemctl disable hidd systemctl disable ip6tables systemctl disable mcstrans systemctl disable mdmonitor systemctl disable pcscd systemctl disable rawdevices systemctl disable readahead_early systemctl disable readahead_later systemctl disable restorecond systemctl disable setroubleshoot systemctl disable yum-updatesd systemctl disable nfs systemctl disable autofs onsystemctl disable cpuspeed onsystemctl disable haldaemon onsystemctl disable irqbalance onsystemctl disable messagebus onsystemctl disable netfs onsystemctl disable nfslock onsystemctl disable rpcgssd onsystemctl disable rpcidmapd onsystemctl disable portmap onThe old model (before Oracle Linux 7 or RHEL 7)chkconfig anacron offchkconfig atd offchkconfig cups offchkconfig cups-config-daemon offchkconfig gpm offchkconfig iptables offchkconfig kudzu offchkconfig lvm2-monitor offchkconfig microcode_ctl offchkconfig sendmail offchkconfig smartd offchkconfig auditd offchkconfig avahi-daemon offchkconfig bluetooth offchkconfig firstboot offchkconfig hidd offchkconfig ip6tables offchkconfig mcstrans offchkconfig mdmonitor offchkconfig pcscd offchkconfig rawdevices offchkconfig readahead_early offchkconfig readahead_later offchkconfig restorecond offchkconfig setroubleshoot offchkconfig yum-updatesd offchkconfig nfs offchkconfig autofs onchkconfig cpuspeed onchkconfig haldaemon onchkconfig irqbalance onchkconfig messagebus onchkconfig netfs onchkconfig nfslock onchkconfig rpcgssd onchkconfig rpcidmapd onchkconfig portmap onReboot the system for this services not startup again.su - oracleand create .bash_profileadd this on your file:echo "###############################################"echo "# BANCO SCRIPT AMBIENTE #"echo "###############################################"export NLS_LANG="BRAZILIAN PORTUGUESE_BRAZIL.WE8MSWIN1252"export ORACLE_SID=prdexport ORACLE_BASE=/u01/app/oracleexport ORACLE_HOME=/u01/app/oracle/product/11.2.0/dbhome_1export PATH=$ORACLE_HOME/bin:$PATHexport ORACLE_UNQNAME=prd E de repente senti uma necessidade dolorosa de espalhar frases lindas... provenientes de sentimentos profundos e sinceros... acredito que o mundo precise de amor... Porque sentimentos como ganancia, egoismo e maldade... jamais compreenderei... parecem manchas de lama... que jogam uns nos outros... uma lama fetida e venenosa... ate mesmo naqueles que mantem uma distancia segura... Porque o ser humano opta pela maldade!? A maldade... me fere de uma forma viceral. (LitssuM) "As pessoas nao sabem amar. Mordem em vez de beijar. E batem em vez de acariciar. Talvez porque percebam como e facil o amor deteriorar* e agem assim de forma reflexa em atitude antalgica. Protegendo-se da dor. Ferindo antes de ser ferido. Vivendo um gostar ao avesso. De repente, o gostar torna-se impossivel, impraticavel. ... Portanto, as pessoas o evitam e procuram consolo na raiva, medo e agressao... que estao sempre a mao e disponiveis. Mais facil de se conseguir e de