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NAME
       postmaster - PostgreSQL


SYNOPSIS
       postmaster [ -A   0 | 1 ] [ -B nbuffers ] [ -c name=value ] [ -d debug-
       level ] [ -D datadir ] [ -F ] [ -h hostname ] [ -i ] [ -k directory ] [
       -l  ]  [ -N max-connections ] [ -o extra-options ] [ -p port ] [ -S ] [
       --name=value ] [ -n | -s ]


DESCRIPTION
       postmaster  PostgreSQL   postmaster  postmaster "postgres"  postmaster

        postmaster postmaster

        postmaster   postmaster ""  -D  PGDATA   postmaster    initdb(1)


OPTIONS
       postmaster   Section 16.4 ``Run-time Configuration''

       -A 0|1

       -B nbuffers
                64  8k

       -c name=value
                Section 16.4 ``Run-time Configuration''   -c

       -d debug-level
                 1  5

       -D datadir

       -F
                fsync   postgresql.conf  fsync=false

              --fsync=true

       -h hostname
                postmaster  TCP   localhost

       -i
                TCP/IP   Unix   postgresql.conf  tcpip_socket=true

              --tcpip-socket=false

       -k directory
               postmaster  Unix   /tmp

       -l
                SSL  -i   SSL

       -N max-connections
               postmaster  32    src/include/config.h   -B   -N  Section  16.5
              ``Managing Kernel Resources''

       -o extra-options
                extra-options   postgres   postmaster   postgres(1)

       -p port
                postmaster   TCP/IP   Unix    PGPORT  PGPORT  PostgreSQL  5432
              psql PGPORT

       -S
                postmaster  tty   /dev/null

                 postmaster

              --silent-mode=false

       --name=value
                -c

            postmaster

       -n     postmaster

       -s     postmaster SIGSTOP   core dumps


ENVIRONMENT
       PGCLIENTENCODING

       PGDATA

       PGDATESTYLE
               datestyle

       PGPORT

       TZ

                Section 18.5 ``Managing Databases''


DIAGNOSTICS
         semget  shmget   Section 16.5 ``Managing Kernel Resouces''

              Tip: :   shared_buffers  PostgreSQL max_connectionsPostgreSQL

         postmaster  postmaster

       $ ps ax | grep postmaster

       $ ps -ef | grep postmaster

         postmaster

         PostgreSQL  postmaster    Unix  1024 "" Unix


NOTES
         SIGKILL postmaster  postmaster

         postmaster SIGTERMSIGINT  SIGQUIT

         pg_ctl(1)   postmaster

        -- FreeBSD OpenBSD  -c  PostgreSQL


EXAMPLES
        postmaster

       $ nohup postmaster >logfile 2>&1 </dev/null &

         postmaster

       $ postmaster -p 1234

         1234  postmaster psql postmaster   psql run it as

       $ psql -p 1234

         PGPORT

       $ export PGPORT=1234
       $ psql

       $ postmaster -c sort_mem=1234
       $ postmaster --sort-mem=1234

         postgresql.conf  sort_mem

              Tip: :   postgresql.conf


SEE ALSO
       initdb(1), pg_ctl(1)

       Postgresql  <laser@pgsqldb.org>