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Oracle® Database Reference
11g Release 2 (11.2)

E40402-15
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ALL_TAB_STATISTICS

ALL_TAB_STATISTICS displays optimizer statistics for the tables accessible to the current user.

Related Views

Column Datatype NULL Description
OWNER VARCHAR2(30)   Owner of the object
TABLE_NAME VARCHAR2(30)   Name of the table
PARTITION_NAME VARCHAR2(30)   Name of the partition
PARTITION_POSITION NUMBER   Position of the partition within the table
SUBPARTITION_NAME VARCHAR2(30)   Name of the subpartition
SUBPARTITION_POSITION NUMBER   Position of the subpartition within the partition
OBJECT_TYPE VARCHAR2(12)   Type of the object:
  • TABLE

  • PARTITION

  • SUBPARTITION

NUM_ROWS NUMBER   Number of rows in the object
BLOCKS NUMBER   Number of used blocks in the object
EMPTY_BLOCKS NUMBER   Number of empty blocks in the object
AVG_SPACE NUMBER   Average available free space in the object
CHAIN_CNT NUMBER   Number of chained rows in the object
AVG_ROW_LEN NUMBER   Average row length, including row overhead
AVG_SPACE_FREELIST_BLOCKS NUMBER   Average freespace of all blocks on a freelist
NUM_FREELIST_BLOCKS NUMBER   Number of blocks on the freelist
AVG_CACHED_BLOCKS NUMBER   Average number of blocks in the buffer cache
AVG_CACHE_HIT_RATIO NUMBER   Average cache hit ratio for the object
SAMPLE_SIZE NUMBER   Sample size used in analyzing the table
LAST_ANALYZED DATE   Date of the most recent time the table was analyzed
GLOBAL_STATS VARCHAR2(3)   Indicates whether statistics were calculated without merging underlying partitions (YES) or not (NO)
USER_STATS VARCHAR2(3)   Indicates whether statistics were entered directly by the user (YES) or not (NO)
STATTYPE_LOCKED VARCHAR2(5)   Type of statistics lock:
  • DATA

  • CACHE

  • ALL

STALE_STATS VARCHAR2(3)   Indicates whether statistics for the object are stale (YES) or not (NO)