oracle默认表空间-官方文档

EXAMPLE

This tablespace contains the sample schemas that are included with Oracle Database. The sample schemas provide a common platform for examples. Oracle documentation and educational materials contain examples based on the sample schemas.

SYSTEM

This tablespace is automatically created at database creation. Oracle Database uses it to manage the database. It contains the data dictionary, which is the central set of tables and views used as a read-only reference for a particular database. It also contains
various tables and views that contain administrative information about the database. These are all contained in the SYS schema, and can be accessed only by the SYS user or other administrative users with the required privilege.

SYSAUX

This is an auxiliary tablespace to the SYSTEM tablespace.

The SYSAUX tablespace contains data for some components and products, reducing the load on the SYSTEM tablespace. Every database using Oracle Database 10g release 1 (10.1) or later must have a SYSAUX tablespace.

Components that use SYSAUX as their default tablespace during installation include Automatic Workload Repository, Oracle Streams, Oracle Text, and Database Control Repository. For more information, see Oracle Database Administrator's Guide.

TEMP

This tablespace stores temporary data generated when processing SQL statements. For example, this tablespace would be used for query sorting. Every database should have a temporary tablespace that is assigned to users as their temporary tablespace. In the preconfigured
database, the TEMP tablespace is specified as the default temporary tablespace. If no temporary tablespace is specified when a user account is created, then Oracle Database assigns this tablespace to the user.

UNDOTBS1

This is the undo tablespace used by the database to store undo information. See "Managing Undo Data" on page 6-25 to understand how an Oracle database uses the undo tablespace. Every database must have an undo tablespace.

USERS

This tablespace is used to store permanent user objects and data. Similar to the TEMP tablespace, every database should have a tablespace for permanent user data that is assigned to users. Otherwise, user objects will be created in the SYSTEM tablespace, which
is not good practice. In the preconfigured database, USERS is designated as the default tablespace for all new users.