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Oracle® Database Reference
11g Release 1 (11.1)

Part Number B28320-01
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ALL_IND_PARTITIONS describes, for each index partition accessible to the current user, the partition-level partitioning information, the storage parameters for the partition, and various partition statistics collected by ANALYZE statements.

Related Views

Column Datatype Description
INDEX_OWNER VARCHAR2(30) Owner of the index
INDEX_NAME VARCHAR2(30) Name of the index
COMPOSITE VARCHAR2(3) Indicates whether the partition belongs to a local index on a composite-partitioned table (YES) or not (NO)
PARTITION_NAME VARCHAR2(30) Name of the partition
SUBPARTITION_COUNT NUMBER If a local index on a composite-partitioned table, the number of subpartitions in the partition
HIGH_VALUE LONG Partition bound value expression
HIGH_VALUE_LENGTH NUMBER Length of partition bound value expression
PARTITION_POSITION NUMBER Position of the partition within the index
STATUS VARCHAR2(8) Whether index partition is USABLE or UNUSABLE
TABLESPACE_NAME VARCHAR2(30) Name of the tablespace containing the partition
PCT_FREE NUMBER Minimum percentage of free space in a block
INI_TRANS NUMBER Initial number of transactions
MAX_TRANS NUMBER 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 Minimum number of extents allowed in the segment
MAX_EXTENT NUMBER Maximum number of extents allowed in the segment
PCT_INCREASE NUMBER 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(7) Logging attribute of the partition
COMPRESSION VARCHAR2(8) Indicates whether key compression is enabled for a partitioned index (ENABLED) or not (DISABLED); NULL for a nonpartitioned index.
BLEVEL NUMBER B*-Tree level: depth of the index from its root block to its leaf blocks. A depth of 0 indicates that the root block and leaf block are the same.
LEAF_BLOCKS NUMBER Number of leaf blocks in the index partition
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 UNIQUE and PRIMARY KEY constraints, this value is always 1.
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.
  • If the value is near the number of blocks, then the table is very well ordered. In this case, the index entries in a single leaf block tend to point to rows in the same data blocks.

  • If the value is near the number of rows, then the table is very randomly ordered. In this case, it is unlikely that index entries in the same leaf block point to rows in the same data blocks.

NUM_ROWS NUMBER Number of rows returned by the ANALYZE statement
SAMPLE_SIZE NUMBER Sample size used in analyzing this partition
LAST_ANALYZED DATE Date on which this partition was most recently analyzed
BUFFER_POOL VARCHAR2(7) Actual buffer pool for the partition
USER_STATS VARCHAR2(3) Indicates whether statistics were entered directly by the user (YES) or not (NO)
PCT_DIRECT_ACCESS NUMBER If a secondary index on index-organized table, the percentage of rows with VALID guess
GLOBAL_STATS VARCHAR2(3) Indicates whether statistics for the partition were collected for the partition as a whole (YES) or were estimated from statistics on underlying subpartitions (NO)