DBA_HIST_VECTOR_INDEX

DBA_HIST_VECTOR_INDEX displays historical statistics for diagnostic information about vector indexes.

This view is populated only on Oracle Autonomous AI Database Serverless (ADB-S). It contains snapshots of V$VECTOR_INDEX.

Column Datatype NULL Description
DBID NUMBER NOT NULL Database ID for the snapshot
SNAP_ID NUMBER NOT NULL Unique snapshot ID
INSTANCE_NUMBER NUMBER NOT NULL Instance number for the snapshot
CON_DBID NUMBER   The database ID of the PDB for the sampled session
INDEX_OBJN NUMBER NOT NULL Index object number
CON_ID NUMBER  

The ID of the container that CON_DBID identifies. Possible values include:

  • 0: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs.

  • 1: This value is used for rows containing data that pertain to only the root

  • n: Where n is the applicable container ID for the rows containing data

INDEX_NAME VARCHAR2(129)   Name of the index
INDEX_ORGANIZATION VARCHAR2(129)  

Type of index organization:

  • INMEMORY NEIGHBOR GRAPH

  • NEIGHBOR PARTITIONS
OWNER VARCHAR2(129)   Owner of the index
ALLOCATED_BYTES NUMBER  

Total amount of memory allocated to the index (in bytes)

If the index is an IVF index, the value of this column is 0.

INDEX_USED_COUNT NUMBER   Number of times the index has been used by queries
INDEX_USED_COUNT_DELTA NUMBER   Delta value for index use by queries

Note: This view is available starting with Oracle AI Database 26ai, Release Update 23.26.3.

See Also: “V$VECTOR_INDEX”