reindexdb
reindexdb — reindex a PostgreSQL database
当前阅读 PG 18·选择有来源记录的版本
此版本暂无所选语言的定义,以下显示原始英文内容。
- Documented executable
- reindexdb
- Executable version
- 18.6
- Reference inventory
- Client applications
- Option definition groups
- 19
- environment
- map[description:Default connection parameters name:PGDATABASE PGHOST PGPORT PGUSER], map[description:Specifies whether to use color in diagnostic messages. Possible values are always , auto and never . name:PG_COLOR]
- manual path
- app-reindexdb.html
- signature
- reindexdb [ connection-option ...] [ option ...] [ -S | --schema schema ] ... [ -t | --table table ] ... [ -i | --index index ] ... [ -s | --system ] [ dbname | -a | --all ]
- synopsis
- reindexdb [ connection-option ...] [ option ...] [ -S | --schema schema ] ... [ -t | --table table ] ... [ -i | --index index ] ... [ -s | --system ] [ dbname | -a | --all ]
版本定义 PG 18
reindexdb
reindexdb — reindex a PostgreSQL database
Synopsis
reindexdb [connection-option...] [option...] [ -S | --schema schema ] ... [ -t | --table table ] ... [ -i | --index index ] ... [ -s | --system ] [ dbname | -a | --all ]
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
CONCURRENTLYoption. See REINDEX, 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/--allis not used. If this is not specified, the database name is read from the environment variablePGDATABASE. If that is not set, the user name specified for the connection is used. Thedbnamecan 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.
-iindex--index=index-
Recreate
indexonly. Multiple indexes can be recreated by writing multiple-iswitches. -jnjobs--jobs=njobs-
Execute the reindex commands in parallel by running
njobscommands simultaneously. This option may reduce the processing time but it also increases the load on the database server.reindexdb will open
njobsconnections 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
--systemoption. -q--quiet-
Do not display progress messages.
-s--system-
Reindex database's system catalogs only.
-Sschema--schema=schema-
Reindex
schemaonly. Multiple schemas can be reindexed by writing multiple-Sswitches. -ttable--table=table-
Reindex
tableonly. Multiple tables can be reindexed by writing multiple-tswitches. --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:
-hhost--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.
-pport--port=port-
Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.
-Uusername--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
.pgpassfile, 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
-Wto avoid the extra connection attempt. --maintenance-db=dbname-
When the
-a/--allis used, connect to this database to gather the list of databases to reindex. If not specified, thepostgresdatabase will be used, or if that does not exist,template1will 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
PGDATABASEPGHOSTPGPORTPGUSER-
Default connection parameters
PG_COLOR-
Specifies whether to use color in diagnostic messages. Possible values are
always,autoandnever.
This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 32.15).
Diagnostics
In case of difficulty, see REINDEX and psql 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.
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
REINDEXDocumented options
| Option and arguments | Description |
|---|---|
| -a --all | Reindex all databases. |
| --concurrently | Use the CONCURRENTLY option. See REINDEX , where all the caveats of this option are explained in detail. |
| -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. |
| -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. |
| -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. |
| --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 variables
| Variable | Meaning |
|---|---|
| PGDATABASE PGHOST PGPORT PGUSER | Default connection parameters |
| PG_COLOR | Specifies whether to use color in diagnostic messages. Possible values are always , auto and never . |
比较版本
完整来源事实
options
map[description:Reindex all databases. names:[-a --all] signature:-a --all source_url:/docs/18/app-reindexdb.html summary:Reindex all databases.], map[description:Use the CONCURRENTLY option. See REINDEX , where all the caveats of this option are explained in detail. names:[--concurrently] signature:--concurrently source_url:/docs/18/app-reindexdb.html summary:Use the CONCURRENTLY option. See REINDEX , where all the caveats of this option are explained in detail.], map[description:Echo the commands that reindexdb generates and sends to the server. names:[-e --echo] signature:-e --echo source_url:/docs/18/app-reindexdb.html summary:Echo the commands that reindexdb generates and sends to the server.], map[description:Recreate index only. Multiple indexes can be recreated by writing multiple -i switches. names:[-i index --index= index] signature:-i index --index= index source_url:/docs/18/app-reindexdb.html summary:Recreate index only. Multiple indexes can be recreated by writing multiple -i switches.], map[description: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 --system option. names:[-j njobs --jobs= njobs] signature:-j njobs --jobs= njobs source_url:/docs/18/app-reindexdb.html summary: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.], map[description:Do not display progress messages. names:[-q --quiet] signature:-q --quiet source_url:/docs/18/app-reindexdb.html summary:Do not display progress messages.], map[description:Reindex database's system catalogs only. names:[-s --system] signature:-s --system source_url:/docs/18/app-reindexdb.html summary:Reindex database's system catalogs only.], map[description:Reindex schema only. Multiple schemas can be reindexed by writing multiple -S switches. names:[-S schema --schema= schema] signature:-S schema --schema= schema source_url:/docs/18/app-reindexdb.html summary:Reindex schema only. Multiple schemas can be reindexed by writing multiple -S switches.], map[description:Reindex table only. Multiple tables can be reindexed by writing multiple -t switches. names:[-t table --table= table] signature:-t table --table= table source_url:/docs/18/app-reindexdb.html summary:Reindex table only. Multiple tables can be reindexed by writing multiple -t switches.], map[description:Specifies the tablespace where indexes are rebuilt. (This name is processed as a double-quoted identifier.) names:[--tablespace= tablespace] signature:--tablespace= tablespace source_url:/docs/18/app-reindexdb.html summary:Specifies the tablespace where indexes are rebuilt. (This name is processed as a double-quoted identifier.)], map[description:Print detailed information during processing. names:[-v --verbose] signature:-v --verbose source_url:/docs/18/app-reindexdb.html summary:Print detailed information during processing.], map[description:Print the reindexdb version and exit. names:[-V --version] signature:-V --version source_url:/docs/18/app-reindexdb.html summary:Print the reindexdb version and exit.], map[description:Show help about reindexdb command line arguments, and exit. names:[-? --help] signature:-? --help source_url:/docs/18/app-reindexdb.html summary:Show help about reindexdb command line arguments, and exit.], map[description: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. names:[-h host --host= host] signature:-h host --host= host source_url:/docs/18/app-reindexdb.html summary: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.], map[description:Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections. names:[-p port --port= port] signature:-p port --port= port source_url:/docs/18/app-reindexdb.html summary:Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.], map[description:User name to connect as. names:[-U username --username= username] signature:-U username --username= username source_url:/docs/18/app-reindexdb.html summary:User name to connect as.], map[description: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. names:[-w --no-password] signature:-w --no-password source_url:/docs/18/app-reindexdb.html summary: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.], map[description: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. names:[-W --password] signature:-W --password source_url:/docs/18/app-reindexdb.html summary:Force reindexdb to prompt for a password before connecting to a database.], map[description: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. names:[--maintenance-db= dbname] signature:--maintenance-db= dbname source_url:/docs/18/app-reindexdb.html summary: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.]
来源引用
定义来源
center · PostgreSQL 18 · ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8
正文语言: en · ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8