Describes the parameters to be set in the postgresql.conf file when using the semantic text search and automatic vectorization feature.

• pgx_vectorizer.max_vectorize_worker

  Specify the maximum number of workers that can run simultaneously within an instance and perform vectorization. The number of workers that perform vectorization is determined by the number of vectorization definitions created. This parameter can only be set at server startup. The default is 1. Because workers act as background workers, add the value set for this parameter plus the number of databases with the pgx_vectorizer feature enabled plus 2 to the max_worker_processes parameter, which specifies the maximum number of background workers. If the value set for max_worker_processes is insufficient, the instance cannot start.

• pgx_vectorizer.pgai_worker_path

  Specify the path to the program that performs vectorization processing. Specify <Fujitsu Enterprise Postgres server feature installation directory>/OSS/pgai-worker/bin/pgai. The default value is /opt/fsepv<x>server64/OSS/pgai-worker/bin/pgai (where "<x>" indicates the product version). You can reflect the changes by reloading the configuration file.

• pgx_vectorizer.enable_hybrid_search_trace(boolean)

  Enable trace information for hybrid search. The default is disabled. This parameter can be specified with the SET statement by any user, but additional access rights are required to record trace information. Also, even if this parameter is enabled on a hot standby server, trace information will not be recorded.