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REINDEXDB(1) PostgreSQL 15.4 Documentation REINDEXDB(1) NAME reindexdb - reindex a PostgreSQL database SYNOPSIS reindexdb [connection-option...] [option...] [ -S | --schema schema ]... [ -t | --table table ]... [ -i | --index index ]... [dbname] reindexdb [connection-option...] [option...] -a | --all reindexdb [connection-option...] [option...] -s | --system [dbname] DESCRIPTION reindexdb is a utility for rebuilding indexes in a PostgreSQL database. reindexdb is a wrapper around the SQL command REINDEX. There is no effective difference between reindexing databases via this utility and via other methods for accessing the server. OPTIONS reindexdb accepts the following command-line arguments: -a --all Reindex all databases. --concurrently Use the CONCURRENTLY option. See REINDEX(7), where all the caveats of this option are explained in detail. [-d] dbname [--dbname=]dbname Specifies the name of the database to be reindexed, when -a/--all is not used. If this is not specified, the database name is read from the environment variable PGDATABASE. If that is not set, the user name specified for the connection is used. The dbname can be a connection string. If so, connection string parameters will override any conflicting command line options. -e --echo Echo the commands that reindexdb generates and sends to the server. -i index --index=index Recreate index only. Multiple indexes can be recreated by writing multiple -i switches. -j njobs --jobs=njobs Execute the reindex commands in parallel by running njobs commands simultaneously. This option may reduce the processing time but it also increases the load on the database server. reindexdb will open njobs connections to the database, so make sure your max_connections setting is high enough to accommodate all connections. -s --system Reindex database's system catalogs only. -S schema --schema=schema Reindex schema only. Multiple schemas can be reindexed by writing multiple -S switches. -t table --table=table Reindex table only. Multiple tables can be reindexed by writing multiple -t switches. --tablespace=tablespace Specifies the tablespace where indexes are rebuilt. (This name is processed as a double-quoted identifier.) -v --verbose Print detailed information during processing. -V --version Print the reindexdb version and exit. -? --help Show help about reindexdb command line arguments, and exit. reindexdb also accepts the following command-line arguments for connection parameters: -h host --host=host Specifies the host name of the machine on which the server is running. If the value begins with a slash, it is used as the directory for the Unix domain socket. -p port --port=port Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections. -U username --username=username User name to connect as. -w --no-password Never issue a password prompt. If the server requires password authentication and a password is not available by other means such as a .pgpass file, the connection attempt will fail. This option can be useful in batch jobs and scripts where no user is present to enter a password. -W --password worth typing -W to avoid the extra connection attempt. --maintenance-db=dbname Specifies the name of the database to connect to to discover which databases should be reindexed, when -a/--all is used. If not specified, the postgres database will be used, or if that does not exist, template1 will be used. This can be a connection string. If so, connection string parameters will override any conflicting command line options. Also, connection string parameters other than the database name itself will be re-used when connecting to other databases. ENVIRONMENT PGDATABASE PGHOST PGPORT PGUSER Default connection parameters PG_COLOR Specifies whether to use color in diagnostic messages. Possible values are always, auto and never. This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 34.15). DIAGNOSTICS In case of difficulty, see REINDEX(7) and psql(1) for discussions of potential problems and error messages. The database server must be running at the targeted host. Also, any default connection settings and environment variables used by the libpq front-end library will apply. NOTES reindexdb might need to connect several times to the PostgreSQL server, asking for a password each time. It is convenient to have a ~/.pgpass file in such cases. See Section 34.16 for more information. EXAMPLES To reindex the database test: $ reindexdb test To reindex the table foo and the index bar in a database named abcd: $ reindexdb --table=foo --index=bar abcd SEE ALSO REINDEX(7) PostgreSQL 15.4 2023 REINDEXDB(1)