Creating a New Administration Account.... In Oracle 10g

 Step 1:
Login Into Oracle....
Start->All Programs->Oracle Database 10g Express Edition->Go To Database Home Page
 The Default Username Is "system" And Enter The Password You Entered During Installation
Click Login Button As Shown In Fig Below.....

 Step 2:
Now To Create New Administration Account...
 Clcik On Administration->Database Users->Create User
As Shown In Fig Below.....

 Step3:
Now On Create Database User Page Enter Username,Password And Confirm Password
And Check The Check Box For DBA In Role Category....
The DBA Role Checkbox Determines The Type Of Account Created. This Is The Only Difference Between creating a regular database account and an administrative database account....
As Shown In Fig below......

Step 4:
Click On Create Button... That's It.....