Use this page to secure your database with passwords for the most important database administrator accounts.
You can set a single password, which will be applied to each of these database user accounts, or enhance the security of the accounts by providing unique passwords for each.
The following table describes the accounts you must secure on this page:
| Account | Description |
|---|---|
| SYS | The SYS users owns all base tables and user-accessible views of the data dictionary. No Oracle user should ever alter (update, delete, or insert) any rows or schema objects contained in the SYS schema, because such activity can compromise data integrity. The security administrator must keep strict control of this central account. |
| SYSTEM | The SYSTEM user is used to create additional tables and views that display administrative information, and internal tables and views used by various Oracle options and tools. The security administrator must keep strict control of this central account. |
| DBSNMP | The DBSNMP user is used by Enterprise Manager to monitor the database. Enterprise Manager uses this account to access performance statistics about the database. The DBSNMP credentials sometimes referred to as the monitoring credentials. |
| SYSMAN | The SYSMAN user represents the Enterprise Manager super administrator account. This Enterprise Manager administator can create and modify other Enterprise Manager administrator accounts, as well as administer the database instance itself. |
For more information about the SYS and SYSTEM user accounts, see the Oracle Database Administrator's Guide.
For more information about the DBSNMP and SYSMAN accounts, see the Oracle Enterprise Manager online help after you install the database. For more information about Oracle Enterprise Manager, see Oracle Enterprise Manager Concepts.
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