if you are not using Grid Infrastructure and Oracle Restart, this guide will help you
automate single instance Oracle database.

create a directory for your shell scripts for example:

mkdir /app/oracle/scripts

1. create a script called setEnv.sh

vi setEnv.sh

# Oracle Settings

export TMP=$ORACLE_BASE/tmp

export TMPDIR=$ORACLE_BASE/tmp

export ORACLE_HOSTNAME=mycomputer.com

export ORACLE_UNQNAME=db12c

export ORACLE_BASE=/orcl/db12

export ORACLE_HOME=/orcl/db12/product/12.2.0.1

export ORACLE_SID=/orcl/db12

export PATH=$PATH:$ORACLE_HOME/bin:/usr/vacpp/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib

export CLASSPATH=$ORACLE_HOME/jlib:/$ORACLE_HOME/rdbms/jlib

2. create two scripts called start_all.sh & stop_all.sh

vi start_all.sh

#!/bin/sh

. /app/oracle/scripts/setEnv.sh

export ORAENV_ASK=NO

. oraenv

export ORAENV_ASK=YES

dbstart \$ORACLE_HOME

vi stop_all.sh

#!/bin/sh

. /app/oracle/scripts/setEnv.sh

export ORAENV_ASK=NO

. oraenv

export ORAENV_ASK=YES

dbshut \$ORACLE_HOME

3. edit scripts unde $ORACLE_HOME/bin for dbstart and dbshut by performing the following:

replace ORACLE_HOME_LISTNER=$1

with

ORACLE_HOME_LISTNER=$ORACLE_HOME

and replace $ORACLE_HOME/bin/lsnrctl start >> $LOG 2>&1 &

with your listener name configured in your listener.ora file

$ORACLE_HOME/bin/lsnrctl start listener_db12c >> $LOG 2>&1 &

4. make sure /etc/oratab is reflecting the right oracle home path

5. Ask Linux Admin to create the following file:

vi /lib/systemd/system/dbora.service

[Unit]

Description=Oracle DB 12cR2

After=syslog.target network.target

[Service]

RemainAfterExit=yes

User=oracle

Group=dba

ExecStart=/app/oracle/scripts/start_all.sh

ExecStop=/app/oracle/scripts/stop_all.sh

[Install]

WantedBy=multi-user.target

6. Linux Admin should execute the following:

systemctl daemon-reload

systemctl start dbora.service

systemctl enable dbora.service

8. Ask Linux Admin to reboot the Linux server to TEST automatic startup of the database