Need to upgrade oracle 8 to 10g

Hi,
I want to upgrade my database from version 8 to version 10g.
My question is:
1) Can i upgrade from oracle 8 to 10g directly? OR need to upgrade to 9i before upgrading to 10g.
2) Is DBUA the right tool for the upgradation?
Hoping for a healthy response,
Thank You and Best Regards

Please read
Oracle Database Upgrade Path Reference List [ID 730365.1]
1. Yes you can directly upgrade...
2. DBUA is good but i would recommend you to go for manual upgrade because you will have more understanding what is happening :)
Upgrade Path
8.1.7.X.X TO 10.2.0.4.0
1. Install 10.2.0.1.0 software
2. Install the 10.2.0.4.0 patchset on top of the existing 10.2.0.1.0 ORACLE_HOME
Patchset number is : 6810189
Patch 6810189
The minimum version required to upgrade to 10.2.X.X.X is 8.1.7.4
Note 551141.1 : Database Server Upgrade/Downgrade Compatibility Matrix
If your oracle database is of a lower version than 8.1.7.4.0 , then Upgrade the database to 8.1.7.4.0 first.
3. Upgrade the database to 10.2.0.4.0
Note 419550.1 : Different Upgrade Methods For Upgrading Your Database
Note 316889.1 : Complete checklist for manual upgrades to 10gR2

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