Installing Oracle Database 23c on AlmaLinux 9.2

1. Install Oracle Database 23c

Create an installation directory,

mkdir -p /u01/app/oracle/product/23.4.0/dbhome_1
chown -R oracle:oracle /u01
chmod -R 775 /u01

Configure environment variables,

vi ~/.bashrc

--- add
export ORACLE_SID=orcl
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/23.4.0/dbhome_1
export PATH=$ORACLE_HOME/bin:$PATH:$HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib
---

source ~/.bashrc

Create a directory,

mkdir -p $ORACLE_HOME

unzip files,

cd $ORACLE_HOME
unzip oracle23c.zip

Run the following command to install,

./runInstaller

According to the default options, click "Next",

According to the default options, click "Next",

Enter each item and click “Next”.

According to the default options, click "Next",

According to the default options, click "Next",

Click "Fix & Check Again",

Copy the “Fixup Script” script,

Execute the “Fixup Script” script,

/tmp/InstallActions2023-12-01_09-22-30AM/CVU_23_oracle_2023-12-01_09-22-33_9158/runfixup.sh

Execute “Check Again” to prepare to fix the Packages problem,

Install the necessary Packages,

sudo dnf install sysstat ksh nfs-utils -y

Execute “Check Again”, ignore the “Swap Size” problem, click “Next”,

Click “Install”,

Execute “Configuration Scripts”,

/u01/app/oraInventory/orainstRoot.sh
/u01/app/oracle/product/23.4.0/dbhome_1/root.sh

After the installation is complete, click "Close"

2. Connect to Oracle Database 23c

Connect to the command line and grant dba permissions to pdbadmin.

sqlplus / as sysdba

SQL> show pdbs;

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 PDB1                           READ WRITE NO
SQL> alter session set container=pdb1;

Session altered.

SQL> grant dba to pdbadmin;

Grant succeeded.

Oracle SQL Developer connection,

3. After restarting, start the database manually

sqlplus / as sysdba
SQL> startup

4. After restarting, manually start the Listener

lsnrctl start
sqlplus / as sysdba
SQL> show parameter service
SQL> alter system register;
SQL> quit
lsnrctl status

5. Manually start the Pluggable Database

sqlplus / as sysdba
SQL> show pdbs
SQL> alter pluggable database pdb1 open;
SQL> show pdbs

6. Automatically start Pluggable Database

sqlplus / as sysdba
SQL> show pdbs
SQL> alter pluggable database pdb1 open;
SQL> show pdbs
SQL> alter pluggable database all save state;

7. Set up the startup database at startup

7-1. Modify /etc/oratab

vi /etc/oratab

--- modify
# orcl:/u01/app/oracle/product/23.4.0/dbhome_1:N
orcl:/u01/app/oracle/product/23.4.0/dbhome_1:Y
---

7-2. Modify /etc/rc.d/rc.local

echo $ORACLE_HOME

--- output
/u01/app/oracle/product/23.4.0/dbhome_1
---

vi /etc/rc.d/rc.local

--- add
su - oracle -lc "/u01/app/oracle/product/23.4.0/dbhome_1/bin/lsnrctl start"
su - oracle -lc "/u01/app/oracle/product/23.4.0/dbhome_1/bin/dbstart /u01/app/oracle/product/23.4.0/dbhome_1"
---

sudo chmod +x /etc/rc.d/rc.local

8. (Caution) Uninstall Oracle Database 23c

cd $ORACLE_HOME/deinstall/
./deinstall

rm -r /etc/oraInst.loc
rm -r /opt/ORCLfmap
rm -r /etc/oratab

9. Oracle Database 23c installation file download

Copyright issues, please wait for the official release of the download address by Oracle.

end!