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System Administration > System maintenance > Maintaining the database server > Maintaining the Oracle database > Oracle processes (Linux systems) > Manually start Oracle processes (Linux systems)

Start the Oracle listener process (Linux systems)

This example shows the startup of a listener process called LISTENER. More than one listener process can be run on a system. Each listener should be defined in a configuration file called listener.ora. Manually start the tnslsnr process by performing the following procedure: Procedure Log on to the operating system as oracle, or switch user to oracle by typing su - oracle followed by the oracle password. Manually set the Oracle environment by typing one of the following commands: Copy export ORACLE_HOME=Oracle-home-path export PATH=$PATH:$ORACLE_HOME/bin Start tnslsnr by typing the following command: Copy $ORACLE_HOME/bin/lsnrctl start LISTENER Verify that tnslsnr is running by typing the following command: Copy ps -ef | grep tnslsnr The following process information is displayed: Copy oracle 1833 1 80 date time tnslsnr -inherit LISTENER Replace date and time with the operating system date and time that tnslsnr was started.

Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/AWAdmin/fhs4814155880506/kkz1737238614272/opl1737238615588/yqk1737238615674/lta1737238617722/tmn1737238617947/genid_starting_the_oracle_listener_49_1097.html · retrieved Fri Jul 31 2026 00:00:00 GMT+0000 (Coordinated Universal Time)