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REINDEXDB(1) PostgreSQL 16.9 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.
Note that this option is incompatible with the --index and --system
options.
-q
--quiet
Do not display progress messages.
-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
Force reindexdb to prompt for a password before connecting to a
database.
This option is never essential, since reindexdb will automatically
prompt for a password if the server demands password
authentication. However, reindexdb will waste a connection attempt
finding out that the server wants a password. In some cases it is
worth typing -W to avoid the extra connection attempt.
--maintenance-db=dbname
When the -a/--all is used, connect to this database to gather the
list of databases to reindex. 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 16.9 2025 REINDEXDB(1)
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