I am trying for online backup
My settings are
Database Log Mode -- Archive Mode
Automatic Archival -- Enabled

While taking the backup of tablespaces and I the script I used

Alter tablespace users begin backup;

host ocopy80 d:\oracle\oradata\mydb\users01.dbf h:\backup\user01.bak

Alter tablespace users end backup;

However when I checked in h:\backup directory there is no file
named users01.bak. Then I changed the the command from ocopy80
to simple copy in dos i.e.

host copy d:\oracle\oradata\mydb\users01.dbf h:\backup\user01.bak

Here I can see the file users01.bak in h:\backup.
Is this the correct as I found ocopy80 in oracle 8.0.3 manual
and I am using Oracle 8.1.6 ?

What Is then command to take backup In Linux ?
Do I have to use cp or other command ?

Amol