Oracle AI Vector Search Parameters

This is a set of parameters related to Oracle AI Vector Search.

• VECTOR_MEMORY_SIZE

  Syntax: VECTOR_MEMORY_SIZE = [ON | OFF] (default ON)

  The initialization parameter VECTOR_MEMORY_SIZE specifies either the current size of the Vector Pool (at CDB level) or the maximum Vector Pool usage allowed by a PDB (at PDB level).

  For more information about this parameter, see Size the Vector Pool.

• VECTOR_INDEX_NEIGHBOR_GRAPH_RELOAD

  Syntax: VECTOR_INDEX_NEIGHBOR_GRAPH_RELOAD = [RESTART | OFF] (default RESTART)

  The initialization parameter VECTOR_INDEX_NEIGHBOR_GRAPH_RELOAD is used to manage automatic recreation of HNSW indexes. You can enable or disable both the HNSW duplication and reload mechanisms in Oracle RAC and non-RAC environments.

  For more information about this parameter and the duplication and reload mechanisms, see Understand HNSW Index Population Mechanisms in Oracle RAC or Single Instance.

• VECTOR_QUERY_CAPTURE

  Syntax: VECTOR_QUERY_CAPTURE = [ON | OFF] (default ON)

  The initialization parameter VECTOR_QUERY_CAPTURE is used to enable or disable capture of query vectors.

  For more information about this parameter and about capturing query vectors, see Index Accuracy Report.