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Oracle® Database Reference
12c Release 1 (12.1)

E17615-23
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ALL_TAB_HISTOGRAMS

ALL_TAB_HISTOGRAMS describes histograms on tables and views accessible to the current user.

Related Views

Note:

These views are populated only if you collect statistics on the table using the DBMS_STATS package. For more information, see Oracle Database PL/SQL Packages and Types Reference.
Column Datatype NULL Description
OWNER VARCHAR2(128)   Owner of the table
TABLE_NAME VARCHAR2(128)   Name of the table
COLUMN_NAME VARCHAR2(4000)   Column name or attribute of the object type column
ENDPOINT_NUMBER NUMBER   Histogram bucket number
ENDPOINT_VALUE NUMBER   Normalized endpoint value for this bucket
ENDPOINT_ACTUAL_VALUE VARCHAR2(4000)   Actual (not normalized) string value of the endpoint for this bucket
ENDPOINT_ACTUAL_VALUE_RAW RAW(1000)   Endpoint actual value in raw format
ENDPOINT_REPEAT_COUNT NUMBER   Frequency of the endpoint (applies only to hybrid histograms, and is set to 0 for other histogram types)
SCOPE VARCHAR2(7)   The value is SHARED for statistics gathered on any table other than global temporary tables.

For a global tempoary table, the possible values are:

  • SESSION - Indicates that the statistics are session-specific

  • SHARED - Indicates that the statistics are shared across all sessions

See Oracle Database PL/SQL Packages and Types Reference for information about using the GLOBAL_TEMP_TABLE_STATS preference of the DBMS_STATS package to control whether to gather session or shared statistics for global temporary tables.