5.351 DBA_SEGMENTS
DBA_SEGMENTS
describes the storage allocated for all segments in the database.
Related View
USER_SEGMENTS
describes the storage allocated for the segments owned by the current user's objects. This view does not display the OWNER
, HEADER_FILE
, HEADER_BLOCK
, or RELATIVE_FNO
columns.
Column | Datatype | NULL | Description |
---|---|---|---|
|
|
|
Username of the segment owner |
|
|
|
Name, if any, of the segment |
|
|
|
Object Partition Name (Set to |
|
|
|
Type of segment:
|
|
|
|
Subtype of LOB segment: |
|
|
|
Name of the tablespace containing the segment |
|
|
|
ID of the file containing the segment header |
|
|
|
ID of the block containing the segment header |
|
|
|
Size, in bytes, of the segment |
|
|
|
Size, in Oracle blocks, of the segment |
|
|
|
Number of extents allocated to the segment |
|
|
|
Size in bytes requested for the initial extent of the segment at create time. (Oracle rounds the extent size to multiples of 5 blocks if the requested size is greater than 5 blocks.) |
|
|
|
Size in bytes of the next extent to be allocated to the segment |
|
|
|
Minimum number of extents allowed in the segment |
|
|
|
Maximum number of extents allowed in the segment |
|
|
|
Maximum number of blocks allowed in the segment |
|
|
|
Retention option for |
|
|
|
Minimum retention duration for |
|
|
|
Percent by which to increase the size of the next extent to be allocated |
|
|
|
Number of process freelists allocated to this segment |
|
|
|
Number of freelist groups allocated to this segment |
|
|
|
Relative file number of the segment header |
|
|
|
Buffer pool to be used for segment blocks:
|
|
|
|
Database Smart Flash Cache hint to be used for segment blocks:
Solaris and Oracle Linux functionality only. |
|
|
|
Cell flash cache hint to be used for segment blocks:
See Also: Oracle Exadata Storage Server Software documentation for more information |
|
|
|
Indicates whether the In-Memory Column Store (IM column store) is enabled ( |
|
|
|
Indicates the priority for In-Memory Column Store (IM column store) population:
|
|
|
|
Indicates how the IM column store is distributed in an Oracle Real Application Clusters (Oracle RAC) environment:
|
|
|
|
Indicates the duplicate setting for the IM column store in an Oracle RAC environment:
|
|
|
|
Indicates the compression level for the IM column store:
|
|
|
The value for columnar compression in the storage cell flash cache. Possible values:
|
Footnote 1
This column is intended for use with Oracle Exadata
See Also: