Best way to backup 8i?

i've winnt4.5 server.
i have a schedule that run a batch file to make all my backup's on a hp dat24GB tape backup and shutdown the server in the end.
i use command line in batch file do backup, for example:"ntbackup backup c: d:\util"
so, i need to backup my oracle database with a command line to.
what is the best practice to do this?
Thanks for your advice

Here are the possibilities you can look into:--
Your backup strategy will depend on factors like
Availability of the database
Size of the database
Importance of the data in the database
Available resources
If you are looking for cold backup, then what you are doing is good enough: --
1. Shutdown the oracle database
2. Copy all the files to the tape
Advantage: --
Easy
Disadvantage: --
1. Users can not access the database when you are performing backup.
2. You have to backup the entire database every time. Waste of tape.
3. If the database crashes, say in the noon, then you will loose all the data since your last cold backup.
If your database is small then just do an export of your database. Have a backup plan. Do incremental export of the database, that way you don't have backup everything that was already backed up yesterday.
If you really want to recover all the data that was available just before the crash, then you need an online backup strategy like: --
1. The old fashioned backup where in you bring the tablespace to backup mode and copy the associated datafiles to the disk, then bring it back to normal mode. This does not need any additional resource. Your batch file could get a little complicated. You should make sure to copy all the other important files like control files etc..(NOT AN EFFICIENT STRATEGY compared to the NEXT)
2. The most efficient is using RMAN. It is a tool that comes with Oracle. You can take online backup. Only disadvantage of this is that you need another small oracle server to host RMAN's repository. You can set it up to back up the changes only.
All of these can be run from a batch file.

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