Detailed steps for linux to completely uninstall oracle after oracle stops the database

1. Use SQL * PLUS to stop a database
Copy codeThe Code is as follows:
$ Sqlplus/nolog

SQL> connect/as sysdba

SQL> shutdown [immediate]

SQL> exit

2. Stop Listener
Copy codeThe Code is as follows:
$ Lsnrctl stop

3. Stop the HTTP service
Copy codeThe Code is as follows:
# Service httpd stop

4. Use su or log on to the root again (if you want to reinstall it, You can retain the oracle user, saving you the need to enter environment variables)

5. Delete the installation directory

Copy codeThe Code is as follows:
# Rm-rf/u01/app/oracle/

6. delete files under/usr/bin.

Copy codeThe Code is as follows:
# Rm/usr/local/bin/dbhome

# Rm/usr/local/bin/oraenv

# Rm/usr/local/bin/coraenv

7. delete/etc/oratab

Copy codeThe Code is as follows:
# Rm/etc/oratab

8. delete/etc/oraInst. loc

Copy codeThe Code is as follows:
# Rm/etc/oraInst. loc

9. Delete the oracle user (if you want to reinstall it, You can not delete it)

Copy codeThe Code is as follows:
# Userdel-r oracle

10. Delete the user group (to reinstall it, Do not delete it)

Copy codeThe Code is as follows:
# Groupdel oinstall

# Groupdel dba

11. Delete the startup Service

Copy codeThe Code is as follows:
# Chkconfig -- del dbora

After the restart, the Oracle database in Linux has been completely deleted !!!