4.258 DBA_FREE_SPACE

DBA_FREE_SPACE describes the free extents in all tablespaces in the database.

Note that if a data file (or entire tablespace) is offline in a locally managed tablespace, you will not see any extent information. If an object has extents in an online file of the tablespace, you will see extent information about the offline data file. However, if the object is entirely in the offline file, a query of this view will not return any records.

Related View

USER_FREE_SPACE describes the free extents in the tablespaces accessible to the current user.

Column Datatype NULL Description

TABLESPACE_NAME

VARCHAR2(30)

Name of the tablespace containing the extent

FILE_ID

NUMBER

Absolute file number of the data file containing the extent

BLOCK_ID

NUMBER

Starting block number of the extent

BYTES

NUMBER

Size of the extent (in bytes)

BLOCKS

NUMBER

Size of the extent (in Oracle blocks)

RELATIVE_FNO

NUMBER

Relative file number of the file containing the extent

See Also:

"USER_FREE_SPACE"