Markup fixes.
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b805230906
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/doc/src/sgml/ref/postgres-ref.sgml,v 1.1 1999/05/26 17:25:38 thomas Exp $
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.TH POSTGRESQL UNIX 05/19/99 PostgreSQL PostgreSQL
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.SH NAME
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postgres - the Postgres backend server
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.SH SYNOPSIS
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.BR "postgres"
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[\c
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.BR "-B"
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n_buffers]
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[\c
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.BR "-C"
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]
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[\c
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.BR "-D"
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data_directory]
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[\c
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.BR "-E"
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]
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[\c
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.BR "-F"
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]
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[\c
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.BR "-O"
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]
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[\c
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.BR "-Q"
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]
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[\c
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.BR "-S kbytes"
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]
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[\c
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.BR "-d"
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debug_level]
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[\c
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.BR "-e"
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]
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[\c
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.BR "-o"
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output_file]
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[\c
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.BR "-s"
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]
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[\c
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.BR "-v protocol"
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]
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[dbname]
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.in -5n
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.SH DESCRIPTION
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The Postgres backend server can be executed directly from the user shell.
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This should be done only while debugging by the DBA, and should not be
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done while other Postgres backends are being managed by a
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.IR postmaster
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on this set of databases.
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.PP
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Some of the switches explained in this man page can be passed to the backend
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through the "database options" field of a connection request, and thus can be
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set for a particular backend without going to the trouble of restarting the
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postmaster. This is particularly handy for debugging-related switches.
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.PP
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The optional argument
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.IR dbname
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specifies the name of the database to be accessed.
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.IR Dbname
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defaults to the value of the
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.SM USER
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environment variable.
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.PP
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The
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.IR postgres
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server understands the following command-line options:
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.TP
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.BR "-B" " n_buffers"
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If the backend is running under the
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.IR postmaster ,
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.IR "n_buffers"
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is the number of shared-memory buffers that the
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.IR "postmaster"
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has allocated for the backend server processes that it starts. If the
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backend is running standalone, this specifies the number of buffers to
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allocate. This value defaults to 64 buffers, where each buffer is 8k bytes
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(or whatever BLCKSZ is set to in config.h).
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.TP
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.BR "-C"
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Do not show server version number.
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.TP
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.BR "-D" " data_directory"
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This option specifies the pathname of the directory that contains the
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database system data (the tables, the catalogs, etc.). If you don't
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specify this option, Postgres uses the value of the PGDATA environment
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variable. You must either specify a -D option or set PGDATA.
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The data directory pathname for a database system is normally determined when
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the database system is created with
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.IR initdb ,
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with a --pgdata option to
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.IR initdb .
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.TP
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.BR "-E"
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Echo all queries.
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.TP
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.BR "-F"
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Disable automatic fsync() call after each transaction.
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This option improves performance, but an operating system crash
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while a transaction is in progress will probably cause data loss.
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.TP
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.BR "-O"
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Override restrictions, so system table structures can be modified(pg_*).
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.TP
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.BR "-Q"
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Specifies \*(lqquiet\*(rq mode.
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.TP
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.BR "-S" " kbytes"
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Specifies the amount of memory to be used by internal sorts and hashes
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before resorting to temporary disk files. The value is specified in
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kilobytes, and defaults to 512 kilobytes. Note that for a complex query,
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several sorts and/or hashes might be running in parallel, and each one
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will be allowed to use as much as -S kilobytes before it starts to put
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data into temporary files.
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.TP
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.BR "-e"
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The
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.IR "-e"
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option controls how dates are input to and output from the database.
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.IP
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If the
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.IR "-e"
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option is supplied, then all dates passed to and from the frontend
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processes will be assumed to be in
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.IR "European"
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format ie.
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.IR "DD-MM-YYYY"
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otherwise dates are input and output in
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.IR "American"
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format ie.
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.IR "MM-DD-YYYY"
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.TP
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.BR "-d" " debug_level"
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Turns on debugging at the numeric level
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.IR "debug_level" .
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Turning on debugging will cause query, parse trees, and query plans to
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be displayed.
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.TP
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.BR "-o" " output_file"
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Sends all debugging and error output to
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.IR output_file .
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If the backend is running under the
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.IR postmaster ,
|
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error messages are still sent to the frontend process as well as to
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.IR output_file ,
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||||
but debugging output is sent to the controlling tty of the
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.IR postmaster
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(since only one file descriptor can be sent to an actual file).
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.TP
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.BR "-s"
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Print time information and other statistics at the end of each query.
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This is useful for benchmarking or for use in tuning the number of
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buffers.
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.TP
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.BR "-v" " protocol"
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Specifies the number of the frontend/backend protocol to be used for this
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particular session.
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.SH "DEVELOPER COMMAND OPTIONS"
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There are several other options that may be specified, used mainly
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for debugging purposes. These are listed here only for the use by
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Postgres system developers.
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.BR "Use of any of these options is highly discouraged" .
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Furthermore, any of these options may disappear or change at any time.
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.TP
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.BR "-A" "n|r|b|Q\fIn\fP|X\fIn\fP"
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.IP
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This option generates a tremendous amount of output.
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.TP
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.BR "-L"
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Turns off the locking system.
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.TP
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.BR "-N"
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Disables use of newline as a query delimiter.
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.TP
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.BR "-f"
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Forbids the use of particular scan and join methods:
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.IR s " and " i
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disable sequential and index scans respectively, while
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.IR n ", " m " and " h
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disable nested-loop, merge and hash joins respectively.
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(Neither sequential scans nor nested-loop joins can be disabled completely;
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the -fs and -fn options simply discourage the optimizer from using those
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plan types if it has any other alternative.)
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.TP
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.BR "-i"
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Prevents query execution, but shows the plan tree.
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.TP
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.BR "-p" " databasename"
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Indicates to the backend server that it has been started by a
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.IR postmaster
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and make different assumptions about buffer pool management, file
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descriptors, etc. Switches following -p are restricted to those
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considered "secure".
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.TP
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.BR "-t" "pa[rser]|pl[anner]|e[xecutor]"
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Print timing statistics for each query relating to each of the major
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system modules. This option cannot be used with
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.BR "-s" .
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.SH "SEE ALSO"
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ipcclean(1),
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psql(1),
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postmaster(1).
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.SH "DIAGNOSTICS"
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Of the nigh-infinite number of error messages you may see when you
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execute the backend server directly, the most common will probably be:
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.TP
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.BR "semget: No space left on device"
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If you see this message, you should run the
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.IR ipcclean
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command. After doing this, try starting
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.IR postgres
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again. If this still doesn't work, you probably need to configure
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your kernel for shared memory and semaphores as described in the
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installation notes.
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<refentry id="APP-POSTGRES">
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<refmeta>
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<refentrytitle>
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<application>postgres</application>
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</refentrytitle>
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<refmiscinfo>Application</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname id="postgres-ref">
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<application>postgres</application>
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</refname>
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<refpurpose>
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Run a <productname>Postgres</productname> single-user backend
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1999-05-19</date>
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</refsynopsisdivinfo>
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<synopsis>
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postgres [ <replaceable class="parameter">dbname</replaceable> ]
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postgres [ -B <replaceable class="parameter">nBuffers</replaceable> ] [ -C ] [ -D <replaceable class="parameter">DataDir</replaceable> ] [ -E ] [ -F ]
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[ -O ] [ -Q ] [ -S <replaceable class="parameter">SortSize</replaceable> ] [ -d [ <replaceable class="parameter">DebugLevel</replaceable> ] ] [ -e ]
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[ -o ] [ <replaceable class="parameter">OutputFile</replaceable> ] [ -s ] [ -v <replaceable class="parameter">protocol</replaceable> ] [ <replaceable class="parameter">dbname</replaceable> ]
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</synopsis>
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<refsect2 id="R2-APP-POSTGRES-1">
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<refsect2info>
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<date>1999-05-19</date>
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</refsect2info>
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<title>
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Inputs
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</title>
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<para>
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<application>postgres</application> accepts the following command line arguments:
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<variablelist>
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<varlistentry>
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<term>
|
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<replaceable class="parameter">dbname</replaceable>
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</term>
|
||||
<listitem>
|
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<para>
|
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The optional argument
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<replaceable class="parameter">dbname</replaceable>
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specifies the name of the database to be accessed.
|
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<replaceable class="parameter">dbname</replaceable>
|
||||
defaults to the value of the
|
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<envar>USER</envar>
|
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environment variable.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
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<term>
|
||||
-B <replaceable class="parameter">nBuffers</replaceable>
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</term>
|
||||
<listitem>
|
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<para>
|
||||
If the backend is running under the
|
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<application>postmaster</application>,
|
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<replaceable class="parameter">nBuffers</replaceable>
|
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is the number of shared-memory buffers that the
|
||||
<application>postmaster</application>
|
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has allocated for the backend server processes that it starts. If the
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backend is running standalone, this specifies the number of buffers to
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allocate. This value defaults to 64 buffers, where each buffer is 8k bytes
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(or whatever BLCKSZ is set to in config.h).
|
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</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-C
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Do not show the server version number.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-D <replaceable class="parameter">DataDir</replaceable>
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Specifies the directory to use as the root of the tree of database
|
||||
directories. If -D is not given, the default data directory name is
|
||||
the value of the environment variable
|
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<envar>PGDATA</envar>.
|
||||
If <envar>PGDATA</envar> is not set, then the directory used is
|
||||
<filename>$POSTGRESHOME/data</filename>.
|
||||
If neither environment variable is set and this command-line
|
||||
option is not specified, the default directory that was
|
||||
set at compile-time is used.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-E
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Echo all queries.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-F
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Disable an automatic <function>fsync()</function> call after each transaction.
|
||||
This option improves performance, but an operating system crash
|
||||
while a transaction is in progress may cause the loss of
|
||||
the most recently entered data. Without the <function>fsync()</function> call
|
||||
the data is buffered by the operating system, and written to disk sometime later.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-O
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Override restrictions, so system table structures can be modified.
|
||||
These tables are typically those with a leading "pg_" in the table name.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-Q
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Specifies "quiet" mode.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-S <replaceable class="parameter">SortSize</replaceable>
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Specifies the amount of memory to be used by internal sorts and hashes
|
||||
before resorting to temporary disk files. The value is specified in
|
||||
kilobytes, and defaults to 512 kilobytes. Note that for a complex query,
|
||||
several sorts and/or hashes might be running in parallel, and each one
|
||||
will be allowed to use as much as
|
||||
<replaceable class="parameter">SortSize</replaceable> kilobytes
|
||||
before it starts to put data into temporary files.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-d [ <replaceable class="parameter">DebugLevel</replaceable> ]
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
The optional argument <replaceable class="parameter">DebugLevel</replaceable>
|
||||
determines the amount of debugging output the backend servers will
|
||||
produce.
|
||||
If <replaceable class="parameter">DebugLevel</replaceable>
|
||||
is one, the postmaster will trace all connection traffic,
|
||||
and nothing else.
|
||||
For levels two and higher,
|
||||
debugging is turned on in the backend process and the postmaster
|
||||
displays more information,
|
||||
including the backend environment and process traffic.
|
||||
Note that if no file is specified for backend servers to
|
||||
send their debugging output then this output will appear on the
|
||||
controlling tty of their parent <application>postmaster</application>.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-e
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
This option controls how dates are interpreted upon
|
||||
input to and output from the database.
|
||||
If the <option>-e</option>
|
||||
option is supplied, then dates passed to and from the frontend
|
||||
processes will be assumed to be in "European"
|
||||
format (<literal>DD-MM-YYYY</literal>),
|
||||
otherwise dates are assumed to be in
|
||||
"American" format (<literal>MM-DD-YYYY</literal>).
|
||||
Dates are accepted by the backend in a wide variety of formats,
|
||||
and for input dates this switch mostly affects the interpretation
|
||||
for ambiguous cases. See <xref linkend="datatype" endterm="datatype">
|
||||
for more information.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-o <replaceable class="parameter">OutputFile</replaceable>
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Sends all debugging and error output to
|
||||
<replaceable class="parameter">OutputFile</replaceable>.
|
||||
If the backend is running under the <application>postmaster</application>,
|
||||
error messages are still sent to the frontend process as well as to
|
||||
<replaceable class="parameter">OutputFile</replaceable>,
|
||||
but debugging output is sent to the controlling tty of the
|
||||
<application>postmaster</application>
|
||||
(since only one file descriptor can be sent to an actual file).
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-s
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print time information and other statistics at the end of each query.
|
||||
This is useful for benchmarking or for use in tuning the number of
|
||||
buffers.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-v <replaceable class="parameter">protocol</replaceable>
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Specifies the number of the frontend/backend protocol to be used for this
|
||||
particular session.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
|
||||
<para>
|
||||
There are several other options that may be specified, used mainly
|
||||
for debugging purposes. These are listed here only for the use by
|
||||
<productname>Postgres</productname> system developers.
|
||||
<emphasis>Use of any of these options is highly discouraged.</emphasis>
|
||||
Furthermore, any of these options may disappear or change at any time.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
These special-case options are:
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>
|
||||
-A n|r|b|Q\fIn\fP|X\fIn\fP
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
This option generates a tremendous amount of output.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-L
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Turns off the locking system.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-N
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Disables use of newline as a query delimiter.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-f [ s | i | m | n | h ]
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Forbids the use of particular scan and join methods:
|
||||
<literal>s</literal> and <literal>i</literal>
|
||||
disable sequential and index scans respectively, while
|
||||
<literal>n</literal>, <literal>m</literal>, and <literal>h</literal>
|
||||
disable nested-loop, merge and hash joins respectively.
|
||||
|
||||
<note>
|
||||
<para>
|
||||
Neither sequential scans nor nested-loop joins can be disabled completely;
|
||||
the <literal>-fs</literal> and <literal>-fn</literal>
|
||||
options simply discourage the optimizer from using those
|
||||
plan types if it has any other alternative.
|
||||
</para>
|
||||
</note>
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-i
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Prevents query execution, but shows the plan tree.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-p <replaceable class="parameter">dbname</replaceable>
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Indicates to the backend server that it has been started by a
|
||||
<application>postmaster</application>
|
||||
and make different assumptions about buffer pool management, file
|
||||
descriptors, etc. Switches following -p are restricted to those
|
||||
considered "secure".
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
|
||||
-t pa[rser] | pl[anner] | e[xecutor]
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
Print timing statistics for each query relating to each of the major
|
||||
system modules. This option cannot be used with <option>-s</option>.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect2>
|
||||
|
||||
<refsect2 id="R2-APP-POSTGRES-2">
|
||||
<refsect2info>
|
||||
<date>1999-05-19</date>
|
||||
</refsect2info>
|
||||
<title>
|
||||
Outputs
|
||||
</title>
|
||||
<para>
|
||||
Of the nigh-infinite number of error messages you may see when you
|
||||
execute the backend server directly, the most common will probably be:
|
||||
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>
|
||||
semget: No space left on device
|
||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
If you see this message, you should run the
|
||||
<application>ipcclean</application>
|
||||
command. After doing this, try starting
|
||||
<application>postmaster</application>
|
||||
again. If this still doesn't work, you probably need to configure
|
||||
your kernel for shared memory and semaphores as described in the
|
||||
installation notes. If you have a kernel with particularly small shared memory
|
||||
and/or semaphore limits, you may have to reconfigure your kernel to increase
|
||||
its shared memory or semaphore parameters.
|
||||
|
||||
<tip>
|
||||
<para>
|
||||
You may be able to postpone
|
||||
reconfiguring your kernel by decreasing -B to reduce
|
||||
<productname>Postgres</productname>' shared memory
|
||||
consumption.
|
||||
</para>
|
||||
</tip>
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</para>
|
||||
</refsect2>
|
||||
</refsynopsisdiv>
|
||||
|
||||
<refsect1 id="R1-APP-POSTGRES-1">
|
||||
<refsect1info>
|
||||
<date>1999-05-19</date>
|
||||
</refsect1info>
|
||||
<title>
|
||||
Description
|
||||
</title>
|
||||
|
||||
<para>
|
||||
The Postgres backend server can be executed directly from the user shell.
|
||||
This should be done only while debugging by the DBA, and should not be
|
||||
done while other Postgres backends are being managed by a
|
||||
<application>postmaster</application>
|
||||
on this set of databases.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Some of the switches explained here can be passed to the backend
|
||||
through the "database options" field of a connection request, and thus can be
|
||||
set for a particular backend without going to the trouble of restarting the
|
||||
postmaster. This is particularly handy for debugging-related switches.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The optional argument <replaceable class="parameter">dbname</replaceable>
|
||||
specifies the name of the database to be accessed.
|
||||
<replaceable class="parameter">dbname</replaceable>
|
||||
defaults to the value of the
|
||||
<envar>USER</envar> environment variable.
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 id="R1-APP-POSTGRES-2">
|
||||
<refsect1info>
|
||||
<date>1998-10-04</date>
|
||||
</refsect1info>
|
||||
<title>
|
||||
Notes
|
||||
</title>
|
||||
|
||||
<para>
|
||||
Useful utilities for dealing with shared memory problems include
|
||||
<application>ipcs(1)</application>,
|
||||
<application>ipcrm(1</application>), and
|
||||
<application>ipcclean(1)</application>.
|
||||
See also <xref linkend="postmaster-ref" endterm="postmaster-ref">.
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
mode: sgml
|
||||
sgml-omittag:nil
|
||||
sgml-shorttag:t
|
||||
sgml-minimize-attributes:nil
|
||||
sgml-always-quote-attributes:t
|
||||
sgml-indent-step:1
|
||||
sgml-indent-data:t
|
||||
sgml-parent-document:nil
|
||||
sgml-default-dtd-file:"../reference.ced"
|
||||
sgml-exposed-tags:nil
|
||||
sgml-local-catalogs:"/usr/lib/sgml/catalog"
|
||||
sgml-local-ecat-files:nil
|
||||
End:
|
||||
-->
|
||||
|
|
|
@ -6,7 +6,7 @@
|
|||
<refmiscinfo>Application</refmiscinfo>
|
||||
</refmeta>
|
||||
<refnamediv>
|
||||
<refname id="postmaster">
|
||||
<refname id="postmaster-ref">
|
||||
<application>postmaster</application>
|
||||
</refname>
|
||||
<refpurpose>
|
||||
|
@ -18,10 +18,9 @@
|
|||
<date>1999-05-19</date>
|
||||
</refsynopsisdivinfo>
|
||||
<synopsis>
|
||||
postmaster [ -B <replaceable class="parameter">nBuffers</replaceable> ]
|
||||
[ -D <replaceable class="parameter">DataDir</replaceable> ] [-N <replaceable class="parameter">nBackends</replaceable> ] [ -S ]
|
||||
[ -d [ <replaceable class="parameter">DebugLevel</replaceable> ] ]
|
||||
[ -i ] [ -o <replaceable class="parameter">BackendOptions</replaceable> ] [ -p <replaceable class="parameter">port</replaceable> ]
|
||||
postmaster [ -B <replaceable class="parameter">nBuffers</replaceable> ] [ -D <replaceable class="parameter">DataDir</replaceable> ] [ -i ]
|
||||
postmaster [ -B <replaceable class="parameter">nBuffers</replaceable> ] [ -D <replaceable class="parameter">DataDir</replaceable> ] [ -N <replaceable class="parameter">nBackends</replaceable> ] [ -S ]
|
||||
[ -d [ <replaceable class="parameter">DebugLevel</replaceable> ] [ -i ] [ -o <replaceable class="parameter">BackendOptions</replaceable> ] [ -p <replaceable class="parameter">port</replaceable> ]
|
||||
postmaster [ -n | -s ] ...
|
||||
</synopsis>
|
||||
|
||||
|
@ -206,10 +205,8 @@ postmaster [ -n | -s ] ...
|
|||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
If the <literal>-n</literal>
|
||||
option is supplied, then the
|
||||
<application>postmaster</application>
|
||||
does not reinitialize shared data structures. A knowledgable system
|
||||
will not reinitialize shared data structures. A knowledgable system
|
||||
programmer can then use the
|
||||
<application>shmemdoc</application>
|
||||
program to examine shared memory and semaphore state.
|
||||
|
@ -235,7 +232,7 @@ postmaster [ -n | -s ] ...
|
|||
</para>
|
||||
</refsect2>
|
||||
|
||||
<refsect2 id="R2-APP-POSTMASTER-1">
|
||||
<refsect2 id="R2-APP-POSTMASTER-2">
|
||||
<refsect2info>
|
||||
<date>1999-05-19</date>
|
||||
</refsect2info>
|
||||
|
@ -388,8 +385,9 @@ on BSD-based systems, or
|
|||
You can run more than one postmaster on a machine only if each one has a
|
||||
separate directory and port number.
|
||||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 id="R1-APP-VACUUMDB-2">
|
||||
<refsect1 id="R1-APP-POSTMASTER-2">
|
||||
<refsect1info>
|
||||
<date>1998-10-04</date>
|
||||
</refsect1info>
|
||||
|
@ -434,7 +432,7 @@ or its alternative form
|
|||
</para>
|
||||
</refsect1>
|
||||
|
||||
<refsect1 id="R1-APP-VACUUMDB-3">
|
||||
<refsect1 id="R1-APP-POSTMASTER-3">
|
||||
<refsect1info>
|
||||
<date>1998-10-04</date>
|
||||
</refsect1info>
|
||||
|
@ -478,7 +476,7 @@ or its alternative form
|
|||
% setenv PGPORT 1234
|
||||
% psql
|
||||
</programlisting>.
|
||||
|
||||
</para>
|
||||
</refsect1>
|
||||
</refentry>
|
||||
|
||||
|
|
Loading…
Reference in New Issue