2.195 ALL_LOB_SUBPARTITIONS

ALL_LOB_SUBPARTITIONS displays partition-level attributes of the LOB data subpartitions accessible to the current user.

Related Views

  • DBA_LOB_SUBPARTITIONS displays partition-level attributes of all LOB data subpartitions in the database.

  • USER_LOB_SUBPARTITIONS displays the LOB subpartitions owned by the current user. This view does not display the TABLE_OWNER column.

Column Datatype NULL Description

TABLE_OWNER

VARCHAR2(128)

NOT NULL

Owner of the table

TABLE_NAME

VARCHAR2(128)

NOT NULL

Name of the table

COLUMN_NAME

VARCHAR2(4000)

Name of the LOB column

LOB_NAME

VARCHAR2(128)

NOT NULL

Name of the partitioned LOB item

LOB_PARTITION_NAME

VARCHAR2(128)

Name of the LOB data partition to which this LOB data subpartition belongs

SUBPARTITION_NAME

VARCHAR2(128)

Name of the table subpartition to which this LOB subpartition corresponds

LOB_SUBPARTITION_NAME

VARCHAR2(128)

Name of the LOB subpartition

LOB_INDSUBPART_NAME

VARCHAR2(128)

Name of the corresponding LOB index subpartition

SUBPARTITION_POSITION

NUMBER

Position of the LOB data partition within the LOB item

CHUNK

NUMBER

Value of the CHUNK attribute of the LOB data partition

PCTVERSION

NUMBER

NOT NULL

Value of the PCTVERSION attribute of the LOB data partition

CACHE

VARCHAR2(10)

Indicates whether and how the LOB data is to be cached in the buffer cache:

  • YES - LOB data is placed in the buffer cache

  • NO - LOB data either is not brought into the buffer cache or is brought into the buffer cache and placed at the least recently used end of the LRU list

  • CACHEREADS - LOB data is brought into the buffer cache only during read operations but not during write operations

IN_ROW

VARCHAR2(3)

Indicates whether the STORAGE IN ROW attribute of the LOB data partition is enabled (YES) or not (NO)

TABLESPACE_NAME

VARCHAR2(30)

NOT NULL

Name of the tablespace containing the LOB data partition

INITIAL_EXTENT

VARCHAR2(40)

Size in bytes of the initial extent for the LOB data partition

NEXT_EXTENT

VARCHAR2(40)

Size in bytes of secondary extents for the LOB data partition

MIN_EXTENTS

VARCHAR2(40)

NOT NULL

Minimum number of extents allowed in the segment of the LOB data partition

MAX_EXTENTS

VARCHAR2(40)

NOT NULL

Maximum number of extents allowed in the segment of the LOB data partition

MAX_SIZE

VARCHAR2(40)

Maximum number of blocks allowed in the segment of the LOB data partition

RETENTION

VARCHAR2(7)

Retention option.

Possible values for a SecureFiles segment:

  • NONE

  • AUTO

  • MIN

  • MAX

  • DEFAULT

  • INVALID

Possible values for a BasicFiles segment:

  • YES

  • NO

MINRETENTION

VARCHAR2(40)

Minimum retention duration for a SecureFiles segment

PCT_INCREASE

VARCHAR2(40)

Percentage increase in extent size for the LOB data partition

FREELISTS

VARCHAR2(40)

Number of process freelists allocated in the segment of the LOB data partition

FREELIST_GROUPS

VARCHAR2(40)

Number of freelist groups allocated in the segment of the LOB data partition

LOGGING

VARCHAR2(3)

Indicates whether or not changes to the LOB are logged:

  • YES

  • NO

BUFFER_POOL

VARCHAR2(7)

Buffer pool to be used for the LOB data partition blocks:

  • DEFAULT

  • KEEP

  • RECYCLE

  • NULL

FLASH_CACHE

VARCHAR2(7)

Database Smart Flash Cache hint to be used for subpartition blocks:

  • DEFAULT

  • KEEP

  • NONE

Solaris and Oracle Linux functionality only.

CELL_FLASH_CACHE

VARCHAR2(7)

Cell flash cache hint to be used for subpartition blocks:

  • DEFAULT

  • KEEP

  • NONE

See Also: Oracle Exadata Storage Server Software documentation for more information

ENCRYPT

VARCHAR2(4)

Indicates whether or not the LOB is encrypted.

Possible values for SecureFiles:

  • YES

  • NO

Possible value for BasicFiles:

  • NONE - Not applicable

COMPRESSION

VARCHAR2(6)

Level of compression used for this LOB.

Possible values for SecureFiles:

  • LOW

  • MEDIUM

  • HIGH

  • NO - Compression is off

Possible value for BasicFiles:

  • NONE - Not applicable

DEDUPLICATION

VARCHAR2(15)

Kind of deduplication used for this LOB.

Possible values for SecureFiles:

  • LOB - Deduplicate

  • NO - Keep duplicates

Possible value for BasicFiles:

  • NONE - Not applicable

SECUREFILE

VARCHAR2(3)

Indicates whether the LOB is SecureFiles (YES) or not (NO)

SEGMENT_CREATED

VARCHAR2(3)

Indicates whether the LOB subpartition segment has been created (YES) or not (NO); N/A indicates that this LOB is not subpartitioned