OS: RHEL 7.x (64-bit)
User: oracle
Install type: Single Instance – Enterprise/Standard Edition
Filesystem based (not ASM)
You have root access when required
PHASE 1: Pre-Installation (Root User)
1️⃣ Verify OS & Kernel
cat /etc/redhat-release
uname -r
Oracle 19c is certified on RHEL 7 ✔️
2️⃣ Set Hostname
hostnamectl set-hostname oradb19c
Add to /etc/hosts:
127.0.0.1 localhost
192.168.1.10 oradb19c
3️⃣ Disable SELinux & Firewall (Recommended for Install)
setenforce 0
vi /etc/selinux/config
SELINUX=disabled
Stop firewall:
systemctl stop firewalld
systemctl disable firewalld
Reboot:
reboot
4️⃣ Install Required Packages
yum install -y \
binutils gcc gcc-c++ make \
ksh libaio libaio-devel \
sysstat unixODBC unixODBC-devel \
glibc glibc-devel \
compat-libcap1 compat-libstdc++-33
5️⃣ Create Oracle Groups & User (If Already Exists – Skip)
groupadd oinstall
groupadd dba
groupadd oper
groupadd backupdba
groupadd dgdba
groupadd kmdba
groupadd racdba
useradd -g oinstall -G dba,oper,backupdba,dgdba,kmdba,racdba oracle
passwd oracle
6️⃣ Kernel Parameter Configuration
Edit:
vi /etc/sysctl.conf
Add:
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmmni = 4096
kernel.shmmax = 68719476736
kernel.shmall = 16777216
kernel.sem = 250 64000 100 4096
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
Apply:
sysctl -p
7️⃣ Set Oracle Limits
Edit:
vi /etc/security/limits.conf
Add:
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft stack 10240
oracle hard stack 32768
🔹 PHASE 2: Oracle Directory Setup (Root)
mkdir -p /u01/app/oracle/product/19.0.0/dbhome_1
mkdir -p /u01/app/oraInventory
chown -R oracle:oinstall /u01
chmod -R 775 /u01
🔹 PHASE 3: Oracle User Environment
Login as oracle:
su - oracle
Edit .bash_profile:
vi ~/.bash_profile
Add:
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/19.0.0/dbhome_1
export ORACLE_SID=ORCL
export PATH=$PATH:$ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib
Apply:
source ~/.bash_profile
🔹 PHASE 4: Download & Extract Oracle 19c
Upload Oracle 19c ZIP:
LINUX.X64_193000_db_home.zip
Extract:
cd $ORACLE_HOME
unzip LINUX.X64_193000_db_home.zip
🔹 PHASE 5: Oracle Software Installation
Run installer:
./runInstaller
Installer Screens (Typical Choices)
| Screen | Selection |
|---|---|
| Configure Security Updates | Skip |
| Installation Option | Set Up Software Only |
| Database Type | Single Instance |
| Edition | Enterprise / Standard |
| Oracle Base | /u01/app/oracle |
| Oracle Home | /u01/app/oracle/product/19.0.0/dbhome_1 |
| Inventory | /u01/app/oraInventory |
| OS Groups | oinstall / dba |
| Root Scripts | Run when prompted |
🔧 Run Root Scripts (As root)
/u01/app/oraInventory/orainstRoot.sh
/u01/app/oracle/product/19.0.0/dbhome_1/root.sh
🔹 PHASE 6: Create Database
As oracle:
dbca
DBCA Options
| Option | Value |
|---|---|
| Create Database | Yes |
| Template | General Purpose |
| DB Name | orcl |
| SID | ORCL |
| CDB | Yes (Recommended) / or choose as per requirement |
| PDB | PDB1 |
| Character Set | AL32UTF8 |
| Memory | Automatic |
| Storage | File System |
🔹 PHASE 7: Post Installation Verification
ps -ef | grep pmon
sqlplus / as sysdba
SELECT name, open_mode FROM v$database;
SHOW pdbs;
🔹 PHASE 8: Enable Auto-Start (Optional)
Edit:
vi /etc/oratab
Change:
ORCL:/u01/app/oracle/product/19.0.0/dbhome_1:Y