ALL_IND_SUBPARTITIONS describes, for each index subpartition accessible to the current user, the partition-level partitioning information, the storage parameters for the subpartition, and various partition statistics collected by ANALYZE statements.
DBA_IND_SUBPARTITIONS describes all index subpartitions in the database.
USER_IND_SUBPARTITIONS describes the index subpartitions owned by the current user. This view does not display the INDEX_OWNER column.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| INDEX_OWNER | VARCHAR2(30) | NOT NULL | Owner of the index | 
| INDEX_NAME | VARCHAR2(30) | NOT NULL | Name of the index | 
| PARTITION_NAME | VARCHAR2(30) | Name of the partition | |
| SUBPARTITION_NAME | VARCHAR2(30) | Name of the subpartition | |
| HIGH_VALUE | LONG | Subpartition bound value expression | |
| HIGH_VALUE_LENGTH | NUMBER | NOT NULL | Length of the subpartition bound value expression | 
| SUBPARTITION_POSITION | NUMBER | Position of a subpartition within a partition | |
| STATUS | VARCHAR2(8) | Indicates whether the index partition is usable ( USABLE) or not (UNUSABLE) | |
| TABLESPACE_NAME | VARCHAR2(30) | NOT NULL | Name of the tablespace containing the partition | 
| PCT_FREE | NUMBER | NOT NULL | Minimum percentage of free space in a block | 
| INI_TRANS | NUMBER | NOT NULL | Initial number of transactions | 
| MAX_TRANS | NUMBER | NOT NULL | Maximum number of transactions | 
| INITIAL_EXTENT | NUMBER | Size of the initial extent in bytes | |
| NEXT_EXTENT | NUMBER | Size of secondary extents in bytes | |
| MIN_EXTENT | NUMBER | NOT NULL | Minimum number of extents allowed in the segment | 
| MAX_EXTENT | NUMBER | NOT NULL | Maximum number of extents allowed in the segment | 
| MAX_SIZE | NUMBER | Maximum number of blocks allowed in the segment | |
| PCT_INCREASE | NUMBER | NOT NULL | Percentage increase in extent size | 
| FREELISTS | NUMBER | Number of process freelists allocated in this segment | |
| FREELIST_GROUPS | NUMBER | Number of process freelist groups allocated in this segment | |
| LOGGING | VARCHAR2(3) | Indicates whether or not changes to the index are logged: 
 | |
| COMPRESSION | VARCHAR2(8) | Indicates whether this subpartition is compressed (ENABLED) or not (DISABLED) | |
| BLEVEL | NUMBER | B-Tree level (depth of the index from its root block to its leaf blocks). A depth of 0indicates that the root block and leaf block are the same. | |
| LEAF_BLOCKS | NUMBER | Number of leaf blocks in the index | |
| DISTINCT_KEYS | NUMBER | Number of distinct keys in the index partition | |
| AVG_LEAF_BLOCKS_PER_KEY | NUMBER | Average number of leaf blocks in which each distinct value in the index appears, rounded to the nearest integer. For indexes that enforce UNIQUEandPRIMARYKEYconstraints, this value is always1. | |
| AVG_DATA_BLOCKS_PER_KEY | NUMBER | Average number of data blocks in the table that are pointed to by a distinct value in the index rounded to the nearest integer. This statistic is the average number of data blocks that contain rows that contain a given value for the indexed columns. | |
| CLUSTERING_FACTOR | NUMBER | Indicates the amount of order of the rows in the table based on the values of the index. 
 | |
| NUM_ROWS | NUMBER | Number of rows in this index subpartition | |
| SAMPLE_SIZE | NUMBER | Sample size used in analyzing this subpartition | |
| LAST_ANALYZED | DATE | Date on which this partition was most recently analyzed | |
| BUFFER_POOL | VARCHAR2(7) | Default buffer pool for the subpartition: 
 | |
| USER_STATS | VARCHAR2(3) | Indicates whether statistics were entered directly by the user ( YES) or not (NO) | |
| GLOBAL_STATS | VARCHAR2(3) | Indicates whether column statistics for the subpartition statistics were collected by analyzing the table as a whole ( YES) or estimated from statistics gathered on partitions and subpartitions (NO) |