Backing up the database and the limitations

Hello all,
I tried to follow the steps in the documentation to back up the database;
On Windows: Click Start, point to Programs, point to Oracle Database 10g Express Edition, and then select Backup Database
but I dont see Backup Database under Oracle database 10g express, here is what I have there:
Get Help >
Get Started
Go To Database Home Page
Run SQL Command Line
Start Database
Stop Database
Thats all.
What I am trying to check is, if I can change the location for backups to avoid the 2 backup limitation. Is it possible to do that?

Well - this is the area we are having a lot of internal discussions on - so this is not final yet, but feedback would be a good thing.
Lets say you shut the machine down mid transaction one night while there are still users connected. This would not cause disk corruption, but you had inflight transactions at the time. On restart, the database would automatically roll forward the committed transactions, and automatically rollback uncommited transactions. So your database would be consistent. You would of course lose the transactions that were uncommited. This is what we call instance recovery.
Lets say you take a backup on Monday, using the techniques we are proposing. On Tuesday the disk crashes and dies. You are not using Raid 5 etc, so you have no disk based mirror of your data. So you go and buy a new disk, add it to the machine, re-install the database software, and then restore from Monday nights backup. This is what we call media recovery.
Using the techniques we propose for Oracle Database XE, you will lose ALL transactions from the time of the backup (i.e Tuesday) - both committed and uncommited until you complete the restore.
If you did not want to run the risk of losing transactions in the event of a disk crash, then you should look at one of the licensable versions, which uses a technique called archive logging to allow you to roll forward all transactions since your last (or any given backup).
Note that for all versions however, backup is online.
Thoughts ?

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Backing up the database and the limitations

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