The start and stop of Oracle iSQL*Plus is very straight forward. The process is different based on what operating system you used.
Windows
Open the Windows Services (services.msc). Look for below service name and click on start or stop at the left panel.
Oracle<db_home_name>iSQL*Plus
UNIX, Linux
Go to ORACLE_HOME/bin directory and execute the following command,
To start,
isqlplusctl start
To stop,
isqlplusctl stop
