Delete an oracle instance, the right way

I want to delete an oracle instance (oracle 10.2.0.4.0) created in the AIX 6.0 OS.
I know i can delete all the dbf and ctl files in the Terminal but i thinks that's no the best way to do it. I think must be a cleaner way to do that.

Thanks in advance.

You can delete databases with DBCA which takes care of most of it.

Or you can do as below, but this will do the same as removing the datafiles, redo logs, controlfiles manually.

sqlplus / as sysdba
startup mount exclusive restrict
exit
rman target /
drop database including backups noprompt;
exit

After this, you still have to remove the entry that belongs to the database from /etc/oratab, remove init.ora/spfile, password file from $ORACLE_HOME/dbs, and clean log directories (adump, bdump, cdump, udump).

StackExchange Database Administrators Q#55550, answer score: 20