root user vs oracle user vs system — oracle-mosc

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root user vs oracle user vs system

edited Mar 22, 2013 9:25AM in Database Administration (MOSC) 7 commentsAnswered ✓
 I need to execute a script "as a root user". I logged in as a super user by executing
su - oracle

Would that be sufficient or should I login as a system? Or should there be the user called "root". 

Can someone please explain the difference between the three: oracle, system, and root users?

I read some Oracle documentation and I know that when database is created, dba group is created and an oracle user, so as I understand, it is sort of like an sa account in SQL Server (I come from SQL Server background). But I don't seem to get the distinguish between oracle vs root vs system

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