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Oracle: sys vs. system

thrasher_hu
thrasher_hu asked
on
Medium Priority
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Last Modified: 2012-08-14
Hi Experts,

I need some information about the sys and system users. What's the difference between them, and what are the options as sysdba, sysoper and normal. What do these influence?
Can I create a user, that is sysdba?

Thanx, thrash
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Commented:
SYS and SYSTEM users are created by Oracle when creating a database.  The schema SYS basically owns all the dictionary objects.

SYSDBA and SYSOPER are keywords used in the connect statement.   These map to OS groups osdba and osoper.  If your OS account is in these groups you can connect using SYSDBA/SYSOPER such as:

connect / as sysdba;

connect / as sysoper;

You then get appropriate privileges associated with SYSDBA/SYSOPER.
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