CTXSYS

CTXSYS

The Oracle Text account

Oracle Text Reference

DBSNMP

DBSNMP

The account used by the Management Agent component of Oracle Enterprise Manager to monitor and manage the database

Oracle Enterprise Manager Grid Control Installation and Basic Configuration

MDDATA

MDDATA

The schema used by Oracle Spatial for storing Geocoder and router data

Oracle Spatial User's Guide and Reference

MDSYS

MDSYS

The Oracle Spatial and Oracle interMedia Locator administrator account

Oracle Spatial User's Guide and Reference

DMSYS

DMSYS

The data mining account. DMSYS performs data mining operations.

Oracle Data Mining Administrator's Guide

Oracle Data Mining Concepts

OLAPSYS

MANAGER

The account used to create OLAP metadata structures. This account owns the OLAP Catalog (CWMLite).

Oracle OLAP Application Developer's Guide

ORDPLUGINS

ORDPLUGINS

The Oracle interMedia user. Plugins supplied by Oracle and third party format plugins are installed in this schema.

Oracle interMedia User's Guide

ORDSYS

ORDSYS

The Oracle interMedia administrator account

Oracle interMedia User's Guide

OUTLN

OUTLN

The account that supports plan stability. Plan stability enables you to maintain the same execution plans for the same SQL statements. OUTLN acts as a role to centrally manage metadata associated with stored outlines.

Oracle Database Performance Tuning Guide

SI_INFORMTN_SCHEMA

SI_INFORMTN_SCHEMA

The account that stores the information views for the SQL/MM Still Image Standard

Oracle interMedia User's Guide

SYS

CHANGE_ON_INSTALL

The account used to perform database administration tasks

"About Administrative Accounts"

SYSMAN

CHANGE_ON_INSTALL

The account used to perform Oracle Enterprise Manager database administration tasks. Note that SYS and SYSTEM can also perform these tasks.

Oracle Enterprise Manager Grid Control Installation and Basic Configuration

SYSTEM

MANAGER

Another account used to perform database administration tasks

"About Administrative Accounts"