Product detail Product by edition and additional products(jp) https://docs.oracle.com/cd/E16338_01/license.112/b56284/editions.htm#CJACGHEB Management Start and stop Starting Oracle service Switching Oracle Account root@localhost#>su - oracle execute sqlplus oracle@localhost$>sqlplus / as sysdba start oracle instance SQL>startup exit from sqlplus SQL>quit startup listener oracle@localhost$>lsnrctl start referral docs kr : https://mkil.tistory.com/336 Stop oracle service su - oracle change oracle account emctl stop dbconsole Stop oracle enterprise manager lsnrctl stop Stop listener sqlplus / as sysdba Login sqlplus shutdown immediate shutdown oracle process when waiting exist connection shutdown abort shutdown oracle process aborting all connection use when take too long time on shutdown immediate command Delete log files Listner log delete $ adrci adrci > show homepath adrci > show control adrci > purge -age 50000 -type alert -aget 50000 : 50000min. when p