Note
This view is available starting with V4.0.0.
Purpose
This view displays the optimizer statistics of all indexes in the current tenant.
Columns
Column |
Type |
Nullable |
Description |
|---|---|---|---|
| OWNER | VARCHAR2(128) | NO | The owner of the index. |
| INDEX_NAME | VARCHAR2(128) | NO | The name of the index. |
| TABLE_OWNER | VARCHAR2(128) | NO | The owner of the index object. |
| TABLE_NAME | VARCHAR2(128) | NO | The name of the index object. |
| PARTITION_NAME | VARCHAR2(128) | NO | The name of the partition. |
| PARTITION_POSITION | NUMBER | NO | The position of the partition in the index. |
| SUBPARTITION_NAME | VARCHAR2(128) | NO | The name of the subpartition. |
| SUBPARTITION_POSITION | NUMBER | NO | The position of the subpartition in the partition. |
| OBJECT_TYPE | VARCHAR2(12) | NO | The type of the object. Valid values:
|
| BLEVEL | NUMBER | NO | This column is reserved and will be deprecated. |
| LEAF_BLOCKS | NUMBER | NO | This column is reserved and will be deprecated. |
| DISTINCT_KEYS | NUMBER | NO | This column is reserved and will be deprecated. |
| AVG_LEAF_BLOCKS_PER_KEY | NUMBER | NO | This column is reserved and will be deprecated. |
| AVG_DATA_BLOCKS_PER_KEY | NUMBER | NO | This column is reserved and will be deprecated. |
| CLUSTERING_FACTOR | NUMBER | NO | This column is reserved and will be deprecated. |
| NUM_ROWS | NUMBER | NO | The number of rows in the index. |
| AVG_CACHED_BLOCKS | NUMBER | NO | This column is reserved and will be deprecated. |
| AVG_CACHE_HIT_RATIO | NUMBER | NO | This column is reserved and will be deprecated. |
| SAMPLE_SIZE | NUMBER | NO | This column is reserved and will be deprecated. |
| LAST_ANALYZED | DATE | NO | The date when the index was last analyzed. |
| GLOBAL_STATS | VARCHAR2(3) | NO | Indicates whether statistics are collected or incrementally maintained. Valid values:
|
| USER_STATS | VARCHAR2(3) | NO | Indicates whether statistics are directly input by the user. Valid values:
|
| STATTYPE_LOCKED | VARCHAR2(5) | NO | The type of the statistics lock. |
| STALE_STATS | VARCHAR2(3) | NO | Indicates whether the statistics of the object are outdated. |
| SCOPE | VARCHAR2(7) | NO | This column is reserved and will be deprecated. |
Sample query
Query the optimizer statistics of the index TBL1_H_IDX1 in the current tenant.
obclient [SYS]> SELECT * FROM SYS.DBA_IND_STATISTICS WHERE INDEX_NAME='TBL1_H_IDX1'\G
The query result is as follows:
*************************** 1. row ***************************
OWNER: SYS
INDEX_NAME: TBL1_H_IDX1
TABLE_OWNER: SYS
TABLE_NAME: TBL1_H
PARTITION_NAME: NULL
PARTITION_POSITION: NULL
SUBPARTITION_NAME: NULL
SUBPARTITION_POSITION: NULL
OBJECT_TYPE: INDEX
BLEVEL: NULL
LEAF_BLOCKS: NULL
DISTINCT_KEYS: NULL
AVG_LEAF_BLOCKS_PER_KEY: NULL
AVG_DATA_BLOCKS_PER_KEY: NULL
CLUSTERING_FACTOR: NULL
NUM_ROWS: 0
AVG_CACHED_BLOCKS: NULL
AVG_CACHE_HIT_RATIO: NULL
SAMPLE_SIZE: NULL
LAST_ANALYZED: 14-MAR-25
GLOBAL_STATS: NO
USER_STATS: NO
STATTYPE_LOCKED: NULL
STALE_STATS: NO
SCOPE: NULL
*************************** 2. row ***************************
OWNER: SYS
INDEX_NAME: TBL1_H_IDX1
TABLE_OWNER: SYS
TABLE_NAME: TBL1_H
PARTITION_NAME: P0
PARTITION_POSITION: 1
SUBPARTITION_NAME: NULL
SUBPARTITION_POSITION: NULL
OBJECT_TYPE: PARTITION
BLEVEL: NULL
LEAF_BLOCKS: NULL
DISTINCT_KEYS: NULL
AVG_LEAF_BLOCKS_PER_KEY: NULL
AVG_DATA_BLOCKS_PER_KEY: NULL
CLUSTERING_FACTOR: NULL
NUM_ROWS: NULL
AVG_CACHED_BLOCKS: NULL
AVG_CACHE_HIT_RATIO: NULL
SAMPLE_SIZE: NULL
LAST_ANALYZED: NULL
GLOBAL_STATS: NULL
USER_STATS: NULL
STATTYPE_LOCKED: NULL
STALE_STATS: NULL
SCOPE: NULL
*************************** 3. row ***************************
OWNER: SYS
INDEX_NAME: TBL1_H_IDX1
TABLE_OWNER: SYS
TABLE_NAME: TBL1_H
PARTITION_NAME: P1
PARTITION_POSITION: 2
SUBPARTITION_NAME: NULL
SUBPARTITION_POSITION: NULL
OBJECT_TYPE: PARTITION
BLEVEL: NULL
LEAF_BLOCKS: NULL
DISTINCT_KEYS: NULL
AVG_LEAF_BLOCKS_PER_KEY: NULL
AVG_DATA_BLOCKS_PER_KEY: NULL
CLUSTERING_FACTOR: NULL
NUM_ROWS: NULL
AVG_CACHED_BLOCKS: NULL
AVG_CACHE_HIT_RATIO: NULL
SAMPLE_SIZE: NULL
LAST_ANALYZED: NULL
GLOBAL_STATS: NULL
USER_STATS: NULL
STATTYPE_LOCKED: NULL
STALE_STATS: NULL
SCOPE: NULL
*************************** 4. row ***************************
OWNER: SYS
INDEX_NAME: TBL1_H_IDX1
TABLE_OWNER: SYS
TABLE_NAME: TBL1_H
PARTITION_NAME: P2
PARTITION_POSITION: 3
SUBPARTITION_NAME: NULL
SUBPARTITION_POSITION: NULL
OBJECT_TYPE: PARTITION
BLEVEL: NULL
LEAF_BLOCKS: NULL
DISTINCT_KEYS: NULL
AVG_LEAF_BLOCKS_PER_KEY: NULL
AVG_DATA_BLOCKS_PER_KEY: NULL
CLUSTERING_FACTOR: NULL
NUM_ROWS: NULL
AVG_CACHED_BLOCKS: NULL
AVG_CACHE_HIT_RATIO: NULL
SAMPLE_SIZE: NULL
LAST_ANALYZED: NULL
GLOBAL_STATS: NULL
USER_STATS: NULL
STATTYPE_LOCKED: NULL
STALE_STATS: NULL
SCOPE: NULL
4 rows in set
References
To view the statistics of indexes on tables owned by the current user, see USER_IND_STATISTICS.
To view the statistics of indexes on tables accessible to the current user, see ALL_IND_STATISTICS.
To view table-level column statistics, query the following views:
To view global-level column statistics, query the following views:
To view partition-level column statistics, query the following views:
To view subpartition-level column statistics, query the following views:
To view table-level histogram statistics, query the following views:
To view partition-level histogram statistics, query the following views:
To view subpartition-level histogram statistics, query the following views:
For information about how to collect statistics, see the following topics: