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Oracle: Unix users and groups

OSDBA group

Members of this group have database administrative privileges (that is: the SYSDBA privilege)

The default name for the OSDBA group is dba.

OSOPER group

Members of this group have some limited database administrative privileges, such as starting up and shutting down the database (That is: the SYSOPER privilege).

The default name for the OSOPER group is oper.

OSBACKUPDBA

Default name: backupdba

OSDGDBA

Members of this group have some privileges to administer and monitor data guard (the SYSDB privilege)

OSKMDBA

Oracle inventory group

The Oracle inventory group has access to the Oracle inventory files.

The default name for this group is oinstall is the default name for the Oracle Inventory Group.

The actual (and possibly different) name can be found in $ORACLE_BASE/oraInventory/oraInst.loc

Creating the oracle user

useradd -g oinstall -G dba,asmdba,backupdba,dgdba,kmdba oracle

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