How Do I Start Oracle Service in UNIX or Linux?

How Do I Start Oracle Service in UNIX or Linux?

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How To Startup Oracle Database on a Unix/Linux

Use the su - username command to login as oracle user. Open the Terminal or login using ssh and type the following command to login
$ su - oracle

Start Oracle server in UNIX/Linux
Now, use the lsnrctl command to start service (usually located at /home/oracle/oracle/product/10.2.0/db_1/bin directory):
$ lsnrctl start

Next start database:
$ dbstart

If above is not working try to login as sysdba:
$ sqlplus '/ as sysdba'

At SQL> type startup command:

SQL> startup
Stop Oracle service in UNIX/Linux

To stop Oracle service type following two commands:
$ lsnrctl stop
$ dbshut

If above failed login as sysdba user:
$ sqlplus '/ as sysdba'

At SQL> type shutdown command:

SQL> shutdown