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INSTALL

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  • INSTALL 43.51 KiB
                          PostgreSQL Installation Instructions
    
    This document describes the installation of PostgreSQL from the source code
    distribution.
    
    -------------------------------------------------------------------------------
    
    Short Version
    
      ./configure
      gmake
      su
      gmake install
      adduser postgres
      mkdir /usr/local/pgsql/data
      chown postgres /usr/local/pgsql/data
      su - postgres
      /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
      /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data >logfile 2>&1 &
      /usr/local/pgsql/bin/createdb test
      /usr/local/pgsql/bin/psql test
    
    The long version is the rest of this document.
    
    -------------------------------------------------------------------------------
    
    Requirements
    
    In general, a modern Unix-compatible platform should be able to run PostgreSQL.
    The platforms that had received specific testing at the time of release are
    listed in the Section called Supported Platforms below. In the "doc"
    subdirectory of the distribution there are several platform-specific FAQ
    documents you might wish to consult if you are having trouble. The following
    software packages are required for building PostgreSQL:
    
        * GNU make is required; other make programs will *not* work. GNU make is
          often installed under the name "gmake"; this document will always refer
          to it by that name. (On some systems GNU make is the default tool with
          the name "make".) To test for GNU make enter
    
            gmake --version
    
          It is recommended to use version 3.76.1 or later.
    
        * You need an ISO/ANSI C compiler. Recent versions of GCC are
          recommendable, but PostgreSQL is known to build with a wide variety of
          compilers from different vendors.
    
        * gzip is needed to unpack the distribution in the first place. If you are
          reading this, you probably already got past that hurdle.
    
        * The GNU Readline library (for comfortable line editing and command
          history retrieval) will be used by default. If you don't want to use it
          then you must specify the "--without-readline" option for "configure".
          (On NetBSD, the "libedit" library is Readline-compatible and is used if
          "libreadline" is not found.)
    
        * To build on Windows NT or Windows 2000 you need the Cygwin and cygipc
          packages. See the file "doc/FAQ_MSWIN" for details.
    
    The following packages are optional. They are not required in the default
    configuration, but they are needed when certain build options are enabled, as
    explained below.
    
        * To build the server programming language PL/Perl you need a full Perl
          installation, including the "libperl" library and the header files. Since
          PL/Perl will be a shared library, the "libperl" library must be a shared
          library also on most platforms. This appears to be the default in recent
          Perl versions, but it was not in earlier versions, and in general it is
          the choice of whomever installed Perl at your site.
          If you don't have the shared library but you need one, a message like
          this will appear during the build to point out this fact:
    
            *** Cannot build PL/Perl because libperl is not a shared library.
            *** You might have to rebuild your Perl installation.  Refer to
            *** the documentation for details.
    
          (If you don't follow the on-screen output you will merely notice that the
          PL/Perl library object, "plperl.so" or similar, will not be installed.)
          If you see this, you will have to rebuild and install Perl manually to be
          able to build PL/Perl. During the configuration process for Perl, request
          a shared library.
    
        * To build the PL/Python server programming language, you need a Python
          installation, including the header files. Since PL/Python will be a
          shared library, the "libpython" library must be a shared library also on
          most platforms. This is not the case in a default Python installation.
          If after building and installing you have a file called "plpython.so"
          (possibly a different extension), then everything went well. Otherwise
          you should have seen a notice like this flying by:
    
            *** Cannot build PL/Python because libpython is not a shared library.
            *** You might have to rebuild your Python installation.  Refer to
            *** the documentation for details.
    
          That means you have to rebuild (part of) your Python installation to
          supply this shared library.
          The catch is that the Python distribution or the Python maintainers do
          not provide any direct way to do this. The closest thing we can offer you
          is the information in Python FAQ 3.30. On some operating systems you
          don't really have to build a shared library, but then you will have to
          convince the PostgreSQL build system of this. Consult the "Makefile" in
          the "src/pl/plpython" directory for details.
    
        * If you want to build Tcl or Tk components (clients and the PL/Tcl
          language) you of course need a Tcl installation.
    
        * To build the JDBC driver, you need Ant 1.5 or higher and a JDK. Ant is a
          special tool for building Java-based packages. It can be downloaded from
          the Ant web site.
          If you have several Java compilers installed, it depends on the Ant
          configuration which one gets used. Precompiled Ant distributions are
          typically set up to read a file ".antrc" in the current user's home
          directory for configuration. For example, to use a different JDK than the
          default, this may work:
    
            JAVA_HOME=/usr/local/sun-jdk1.3
            JAVACMD=$JAVA_HOME/bin/java
    
               Note: Do not try to build the driver by calling "ant" or even
               "javac" directly. This will not work. Run "gmake" normally as
               described below.
    
        * To enable Native Language Support (NLS), that is, the ability to display
          a program's messages in a language other than English, you need an
          implementation of the Gettext API. Some operating systems have this
          built-in (e.g., Linux, NetBSD, Solaris), for other systems you can
          download an add-on package from here: http://www.postgresql.org/~petere/
          gettext.html. If you are using the Gettext implementation in the GNU C
          library then you will additionally need the GNU Gettext package for some
          utility programs. For any of the other implementations you will not need
          it.
    
        * Kerberos, OpenSSL, or PAM, if you want to support authentication using
          these services.
    
    If you are building from a CVS tree instead of using a released source package,
    or if you want to do development, you also need the following packages:
    
        * Flex and Bison are needed to build a CVS checkout or if you changed the
          actual scanner and parser definition files. If you need them, be sure to
          get Flex 2.5.4 or later and Bison 1.875 or later. Other yacc programs can
          sometimes be used, but doing so requires extra effort and is not
          recommended. Other lex programs will definitely not work.
    
    If you need to get a GNU package, you can find it at your local GNU mirror site
    (see http://www.gnu.org/order/ftp.html for a list) or at ftp://ftp.gnu.org/
    gnu/.
    Also check that you have sufficient disk space. You will need about 65 MB for
    the source tree during compilation and about 15 MB for the installation
    directory. An empty database cluster takes about 25 MB, databases take about
    five times the amount of space that a flat text file with the same data would
    take. If you are going to run the regression tests you will temporarily need up
    to an extra 90 MB. Use the "df" command to check for disk space.
    
    -------------------------------------------------------------------------------
    
    If You Are Upgrading
    
    The internal data storage format changes with new releases of PostgreSQL.
    Therefore, if you are upgrading an existing installation that does not have a
    version number "7.4.x", you must back up and restore your data as shown here.
    These instructions assume that your existing installation is under the "/usr/
    local/pgsql" directory, and that the data area is in "/usr/local/pgsql/data".
    Substitute your paths appropriately.
    
       1. Make sure that your database is not updated during or after the backup.
          This does not affect the integrity of the backup, but the changed data
          would of course not be included. If necessary, edit the permissions in
          the file "/usr/local/pgsql/data/pg_hba.conf" (or equivalent) to disallow
          access from everyone except you.
    
       2. To back up your database installation, type:
    
            pg_dumpall > outputfile
    
          If you need to preserve OIDs (such as when using them as foreign keys),
          then use the "-o" option when running "pg_dumpall".
          "pg_dumpall" does not save large objects. Check the documentation if you
          need to do this.
          To make the backup, you can use the "pg_dumpall" command from the version
          you are currently running. For best results, however, try to use the
          "pg_dumpall" command from PostgreSQL 7.4, since this version contains
          bug fixes and improvements over older versions. While this advice might
          seem idiosyncratic since you haven't installed the new version yet, it is
          advisable to follow it if you plan to install the new version in parallel
          with the old version. In that case you can complete the installation
          normally and transfer the data later. This will also decrease the
          downtime.
    
       3. If you are installing the new version at the same location as the old one
          then shut down the old server, at the latest before you install the new
          files:
    
            kill -INT `cat /usr/local/pgsql/data/postmaster.pid`
    
          Versions prior to 7.0 do not have this "postmaster.pid" file. If you are
          using such a version you must find out the process ID of the server
          yourself, for example by typing "ps ax | grep postmaster", and supply it
          to the "kill" command.
          On systems that have PostgreSQL started at boot time, there is probably a
          start-up file that will accomplish the same thing. For example, on a Red
          Hat Linux system one might find that
    
            /etc/rc.d/init.d/postgresql stop
    
          works. Another possibility is "pg_ctl stop".
    
       4. If you are installing in the same place as the old version then it is
          also a good idea to move the old installation out of the way, in case you
          have trouble and need to revert to it. Use a command like this:
    
            mv /usr/local/pgsql /usr/local/pgsql.old
    
    After you have installed PostgreSQL 7.4, create a new database directory and
    start the new server. Remember that you must execute these commands while
    logged in to the special database user account (which you already have if you
    are upgrading).
    
      /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
      /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data
    
    Finally, restore your data with
    
      /usr/local/pgsql/bin/psql -d template1 -f outputfile
    
    using the *new* psql.
    These topics are discussed at length in the documentation, which you are
    encouraged to read in any case.
    
    -------------------------------------------------------------------------------
    
    Installation Procedure
    
       1. Configuration
          The first step of the installation procedure is to configure the source
          tree for your system and choose the options you would like. This is done
          by running the "configure" script. For a default installation simply
          enter
    
            ./configure
    
          This script will run a number of tests to guess values for various system
          dependent variables and detect some quirks of your operating system, and
          finally will create several files in the build tree to record what it
          found. (You can also run "configure" in a directory outside the source
          tree if you want to keep the build directory separate.)
          The default configuration will build the server and utilities, as well as
          all client applications and interfaces that require only a C compiler.
          All files will be installed under "/usr/local/pgsql" by default.
          You can customize the build and installation process by supplying one or
          more of the following command line options to "configure":
    
            --prefix=PREFIX
    
                Install all files under the directory "PREFIX" instead of "/usr/
                local/pgsql". The actual files will be installed into various
                subdirectories; no files will ever be installed directly into the
                "PREFIX" directory.
                If you have special needs, you can also customize the individual
                subdirectories with the following options.
    
            --exec-prefix=EXEC-PREFIX
    
                You can install architecture-dependent files under a different
                prefix, "EXEC-PREFIX", than what "PREFIX" was set to. This can be
                useful to share architecture-independent files between hosts. If
                you omit this, then "EXEC-PREFIX" is set equal to "PREFIX" and both
                architecture-dependent and independent files will be installed
                under the same tree, which is probably what you want.
    
            --bindir=DIRECTORY
    
                Specifies the directory for executable programs. The default is
                "EXEC-PREFIX/bin", which normally means "/usr/local/pgsql/bin".
    
            --datadir=DIRECTORY
    
                Sets the directory for read-only data files used by the installed
                programs. The default is "PREFIX/share". Note that this has nothing
                to do with where your database files will be placed.
    
            --sysconfdir=DIRECTORY
    
                The directory for various configuration files, "PREFIX/etc" by
                default.
    
            --libdir=DIRECTORY
    
                The location to install libraries and dynamically loadable modules.
                The default is "EXEC-PREFIX/lib".
    
            --includedir=DIRECTORY
    
                The directory for installing C and C++ header files. The default is
                "PREFIX/include".
    
            --docdir=DIRECTORY
    
                Documentation files, except "man" pages, will be installed into
                this directory. The default is "PREFIX/doc".
    
            --mandir=DIRECTORY
    
                The man pages that come with PostgreSQL will be installed under
                this directory, in their respective "manx" subdirectories. The
                default is "PREFIX/man".
    
               Note: Care has been taken to make it possible to install
               PostgreSQL into shared installation locations (such as "/usr/
               local/include") without interfering with the namespace of the
               rest of the system. First, the string "/postgresql" is
               automatically appended to datadir, sysconfdir, and docdir,
               unless the fully expanded directory name already contains the
               string "postgres" or "pgsql". For example, if you choose "/usr/
               local" as prefix, the documentation will be installed in "/usr/
               local/doc/postgresql", but if the prefix is "/opt/postgres",
               then it will be in "/opt/postgres/doc". The public C header
               files of the client interfaces are installed into includedir
               and are namespace-clean. The internal header files and the
               server header files are installed into private directories
               under includedir. See the documentation of each interface for
               information about how to get at the its header files. Finally,
               a private subdirectory will also be created, if appropriate,
               under libdir for dynamically loadable modules.
    
            --with-includes=DIRECTORIES
    
                "DIRECTORIES" is a colon-separated list of directories that will be
                added to the list the compiler searches for header files. If you
                have optional packages (such as GNU Readline) installed in a non-
                standard location, you have to use this option and probably also
                the corresponding "--with-libraries" option.
                Example: --with-includes=/opt/gnu/include:/usr/sup/include.
    
            --with-libraries=DIRECTORIES
    
                "DIRECTORIES" is a colon-separated list of directories to search
                for libraries. You will probably have to use this option (and the
                corresponding "--with-includes" option) if you have packages
                installed in non-standard locations.
                Example: --with-libraries=/opt/gnu/lib:/usr/sup/lib.
    
            --enable-nls[=LANGUAGES]
    
                Enables Native Language Support (NLS), that is, the ability to
                display a program's messages in a language other than English.
                "LANGUAGES" is a space separated list of codes of the languages
                that you want supported, for example --enable-nls='de fr'. (The
                intersection between your list and the set of actually provided
                translations will be computed automatically.) If you do not specify
                a list, then all available translations are installed.
                To use this option, you will need an implementation of the Gettext
                API; see above.
    
            --with-pgport=NUMBER
    
                Set "NUMBER" as the default port number for server and clients. The
                default is 5432. The port can always be changed later on, but if
                you specify it here then both server and clients will have the same
                default compiled in, which can be very convenient. Usually the only
                good reason to select a non-default value is if you intend to run
                multiple PostgreSQL servers on the same machine.
    
            --with-perl
    
                Build the PL/Perl server-side language.
    
            --with-python
    
                Build the PL/Python server-side language.
    
            --with-tcl
    
                Build components that require Tcl/Tk, which are libpgtcl, pgtclsh,
                pgtksh, and PL/Tcl. But see below about "--without-tk".
    
            --without-tk
    
                If you specify "--with-tcl" and this option, then the program that
                requires Tk (pgtksh) will be excluded.
    
            --with-tclconfig=DIRECTORY, --with-tkconfig=DIRECTORY
    
                Tcl/Tk installs the files "tclConfig.sh" and "tkConfig.sh", which
                contain configuration information needed to build modules
                interfacing to Tcl or Tk. These files are normally found
                automatically at their well-known locations, but if you want to use
                a different version of Tcl or Tk you can specify the directory in
                which to find them.
    
            --with-java
    
                Build the JDBC driver and associated Java packages.
    
            --with-krb4[=DIRECTORY], --with-krb5[=DIRECTORY]
    
                Build with support for Kerberos authentication. You can use either
                Kerberos version 4 or 5, but not both. The "DIRECTORY" argument
                specifies the root directory of the Kerberos installation; "/usr/
                athena" is assumed as default. If the relevant header files and
                libraries are not under a common parent directory, then you must
                use the "--with-includes" and "--with-libraries" options in
                addition to this option. If, on the other hand, the required files
                are in a location that is searched by default (e.g., "/usr/lib"),
                then you can leave off the argument.
                "configure" will check for the required header files and libraries
                to make sure that your Kerberos installation is sufficient before
                proceeding.
    
            --with-krb-srvnam=NAME
    
                The name of the Kerberos service principal. postgres is the
                default. There's probably no reason to change this.
    
            --with-openssl[=DIRECTORY]
    
                Build with support for SSL (encrypted) connections. This requires
                the OpenSSL package to be installed. The "DIRECTORY" argument
                specifies the root directory of the OpenSSL installation; the
                default is "/usr/local/ssl".
                "configure" will check for the required header files and libraries
                to make sure that your OpenSSL installation is sufficient before
                proceeding.
    
            --with-pam
    
                Build with PAM (Pluggable Authentication Modules) support.
    
            --without-readline
    
                Prevents the use of the Readline library. This disables command-
                line editing and history in psql, so it is not recommended.
    
            --with-rendezvous
    
                Build with Rendezvous support.
    
            --disable-spinlocks
    
                Allow the builds to succeed even if PostgreSQL has no CPU spinlock
                support for the platform. The lack of spinlock support will result
                in poor performance; therefore, this option should only be used if
                the build aborts and informs you that the platform lacks spinlock
                support.
    
            --enable-thread-safety
    
                Make the client libraries thread-safe. This allows concurrent
                threads in libpq and ECPG programs to safely control their private
                connection handles.
    
            --without-zlib
    
                Prevents the use of the Zlib library. This disables compression
                support in pg_dump. This option is only intended for those rare
                systems where this library is not available.
    
            --enable-debug
    
                Compiles all programs and libraries with debugging symbols. This
                means that you can run the programs through a debugger to analyze
                problems. This enlarges the size of the installed executables
                considerably, and on non-GCC compilers it usually also disables
                compiler optimization, causing slowdowns. However, having the
                symbols available is extremely helpful for dealing with any
                problems that may arise. Currently, this option is recommended for
                production installations only if you use GCC. But you should always
                have it on if you are doing development work or running a beta
                version.
    
            --enable-cassert
    
                Enables assertion checks in the server, which test for many "can't
                happen" conditions. This is invaluable for code development
                purposes, but the tests slow things down a little. Also, having the
                tests turned on won't necessarily enhance the stability of your
                server! The assertion checks are not categorized for severity, and
                so what might be a relatively harmless bug will still lead to
                server restarts if it triggers an assertion failure. Currently,
                this option is not recommended for production use, but you should
                have it on for development work or when running a beta version.
    
            --enable-depend
    
                Enables automatic dependency tracking. With this option, the
                makefiles are set up so that all affected object files will be
                rebuilt when any header file is changed. This is useful if you are
                doing development work, but is just wasted overhead if you intend
                only to compile once and install. At present, this option will work
                only if you use GCC.
    
          If you prefer a C compiler different from the one "configure" picks then
          you can set the environment variable CC to the program of your choice. By
          default, "configure" will pick "gcc" unless this is inappropriate for the
          platform. Similarly, you can override the default compiler flags with the
          CFLAGS variable.
    
          You can specify environment variables on the "configure" command line,
          for example:
    
            ./configure CC=/opt/bin/gcc CFLAGS='-O2 -pipe'
    
       2. Build
          To start the build, type
    
            gmake
    
          (Remember to use GNU make.) The build may take anywhere from 5 minutes to
          half an hour depending on your hardware. The last line displayed should
          be
    
            All of PostgreSQL is successfully made. Ready to install.
    
       3. Regression Tests
          If you want to test the newly built server before you install it, you can
          run the regression tests at this point. The regression tests are a test
          suite to verify that PostgreSQL runs on your machine in the way the
          developers expected it to. Type
    
            gmake check
    
          (This won't work as root; do it as an unprivileged user.) The file "src/
          test/regress/README" and the documentation contain detailed information
          about interpreting the test results. You can repeat this test at any
          later time by issuing the same command.
    
       4. Installing The Files
               Note: If you are upgrading an existing system and are going to
               install the new files over the old ones, then you should have
               backed up your data and shut down the old server by now, as
               explained in
               the Section called If You Are Upgrading
                above.
          To install PostgreSQL enter
    
            gmake install
    
          This will install files into the directories that were specified in step
          1. Make sure that you have appropriate permissions to write into that
          area. Normally you need to do this step as root. Alternatively, you could
          create the target directories in advance and arrange for appropriate
          permissions to be granted.
          You can use gmake install-strip instead of gmake install to strip the
          executable files and libraries as they are installed. This will save some
          space. If you built with debugging support, stripping will effectively
          remove the debugging support, so it should only be done if debugging is
          no longer needed. install-strip tries to do a reasonable job saving
          space, but it does not have perfect knowledge of how to strip every
          unneeded byte from an executable file, so if you want to save all the
          disk space you possibly can, you will have to do manual work.
          The standard installation provides only the header files needed for
          client application development. If you plan to do any server-side program
          development (such as custom functions or data types written in C), then
          you may want to install the entire PostgreSQL include tree into your
          target include directory. To do that, enter
    
            gmake install-all-headers
    
          This adds a megabyte or two to the installation footprint, and is only
          useful if you don't plan to keep the whole source tree around for
          reference. (If you do, you can just use the source's include directory
          when building server-side software.)
          Client-only installation: If you want to install only the client
          applications and interface libraries, then you can use these commands:
    
            gmake -C src/bin install
            gmake -C src/include install
            gmake -C src/interfaces install
            gmake -C doc install
    
    Uninstallation: To undo the installation use the command "gmake uninstall".
    However, this will not remove any created directories.
    Cleaning: After the installation you can make room by removing the built files
    from the source tree with the command "gmake clean". This will preserve the
    files made by the "configure" program, so that you can rebuild everything with
    "gmake" later on. To reset the source tree to the state in which it was
    distributed, use "gmake distclean". If you are going to build for several
    platforms from the same source tree you must do this and re-configure for each
    build.
    If you perform a build and then discover that your "configure" options were
    wrong, or if you change anything that "configure" investigates (for example,
    software upgrades), then it's a good idea to do "gmake distclean" before
    reconfiguring and rebuilding. Without this, your changes in configuration
    choices may not propagate everywhere they need to.
    
    -------------------------------------------------------------------------------
    
    Post-Installation Setup
    
    Shared Libraries
    
    On some systems that have shared libraries (which most systems do) you need to
    tell your system how to find the newly installed shared libraries. The systems
    on which this is *not* necessary include BSD/OS, FreeBSD, HP-UX, IRIX, Linux,
    NetBSD, OpenBSD, Tru64 UNIX (formerly Digital UNIX), and Solaris.
    The method to set the shared library search path varies between platforms, but
    the most widely usable method is to set the environment variable
    LD_LIBRARY_PATH like so: In Bourne shells ("sh", "ksh", "bash", "zsh")
    
      LD_LIBRARY_PATH=/usr/local/pgsql/lib
      export LD_LIBRARY_PATH
    
    or in "csh" or "tcsh"
    
      setenv LD_LIBRARY_PATH /usr/local/pgsql/lib
    
    Replace /usr/local/pgsql/lib with whatever you set "--libdir" to in step 1. You
    should put these commands into a shell start-up file such as "/etc/profile" or
    "~/.bash_profile". Some good information about the caveats associated with this
    method can be found at http://www.visi.com/~barr/ldpath.html.
    On some systems it might be preferable to set the environment variable
    LD_RUN_PATH *before* building.
    On Cygwin, put the library directory in the PATH or move the ".dll" files into
    the "bin" directory.
    If in doubt, refer to the manual pages of your system (perhaps "ld.so" or
    "rld"). If you later on get a message like
    
      psql: error in loading shared libraries
      libpq.so.2.1: cannot open shared object file: No such file or directory
    
    then this step was necessary. Simply take care of it then.
    If you are on BSD/OS, Linux, or SunOS 4 and you have root access you can run
    
      /sbin/ldconfig /usr/local/pgsql/lib
    
    (or equivalent directory) after installation to enable the run-time linker to
    find the shared libraries faster. Refer to the manual page of "ldconfig" for
    more information. On FreeBSD, NetBSD, and OpenBSD the command is
    
      /sbin/ldconfig -m /usr/local/pgsql/lib
    
    instead. Other systems are not known to have an equivalent command.
    
    -------------------------------------------------------------------------------
    
    Environment Variables
    
    If you installed into "/usr/local/pgsql" or some other location that is not
    searched for programs by default, you should add "/usr/local/pgsql/bin" (or
    whatever you set "--bindir" to in step 1) into your PATH. Strictly speaking,
    this is not necessary, but it will make the use of PostgreSQL much more
    convenient.
    To do this, add the following to your shell start-up file, such as
    "~/.bash_profile" (or "/etc/profile", if you want it to affect every user):
    
      PATH=/usr/local/pgsql/bin:$PATH
      export PATH
    
    If you are using "csh" or "tcsh", then use this command:
    
      set path = ( /usr/local/pgsql/bin $path )
    
    To enable your system to find the man documentation, you need to add lines like
    the following to a shell start-up file unless you installed into a location
    that is searched by default.
    
      MANPATH=/usr/local/pgsql/man:$MANPATH
      export MANPATH
    
    The environment variables PGHOST and PGPORT specify to client applications the
    host and port of the database server, overriding the compiled-in defaults. If
    you are going to run client applications remotely then it is convenient if
    every user that plans to use the database sets PGHOST. This is not required,
    however: the settings can be communicated via command line options to most
    client programs.
    
    -------------------------------------------------------------------------------
    
    Getting Started
    
    The following is a quick summary of how to get PostgreSQL up and running once
    installed. The main documentation contains more information.
    
       1. Create a user account for the PostgreSQL server. This is the user the
          server will run as. For production use you should create a separate,
          unprivileged account ("postgres" is commonly used). If you do not have
          root access or just want to play around, your own user account is enough,
          but running the server as root is a security risk and will not work.
    
            adduser postgres
    
       2. Create a database installation with the "initdb" command. To run "initdb"
          you must be logged in to your PostgreSQL server account. It will not work
          as root.
    
            root# mkdir /usr/local/pgsql/data
            root# chown postgres /usr/local/pgsql/data
            root# su - postgres
            postgres$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
    
          The "-D" option specifies the location where the data will be stored. You
          can use any path you want, it does not have to be under the installation
          directory. Just make sure that the server account can write to the
          directory (or create it, if it doesn't already exist) before starting
          "initdb", as illustrated here.
    
       3. The previous step should have told you how to start up the database
          server. Do so now. The command should look something like
    
            /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data
    
          This will start the server in the foreground. To put the server in the
          background use something like
    
            nohup /usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data \
                </dev/null >>server.log 2>&1 </dev/null &
    
          To stop a server running in the background you can type
    
            kill `cat /usr/local/pgsql/data/postmaster.pid`
    
          In order to allow TCP/IP connections (rather than only Unix domain socket
          ones) you need to pass the "-i" option to "postmaster".
    
       4. Create a database:
    
            createdb testdb
    
          Then enter
    
            psql testdb
    
          to connect to that database. At the prompt you can enter SQL commands and
          start experimenting.
    
    -------------------------------------------------------------------------------
    
    What Now?
    
        * The PostgreSQL distribution contains a comprehensive documentation set,
          which you should read sometime. After installation, the documentation can
          be accessed by pointing your browser to "/usr/local/pgsql/doc/html/
          index.html", unless you changed the installation directories.
          The first few chapters of the main documentation are the Tutorial, which
          should be your first reading if you are completely new to SQL databases.
          If you are familiar with database concepts then you want to proceed with
          part on server administration, which contains information about how to
          set up the database server, database users, and authentication.
    
        * Usually, you will want to modify your computer so that it will
          automatically start the database server whenever it boots. Some
          suggestions for this are in the documentation.
    
        * Run the regression tests against the installed server (using "gmake
          installcheck"). If you didn't run the tests before installation, you
          should definitely do it now. This is also explained in the documentation.
    
        * By default, PostgreSQL is configured to run on minimal hardware. This
          allows it to start up with almost any hardware configuration. The default
          configuration is, however, not designed for optimum performance. To
          achieve optimum performance, several server parameters must be adjusted,
          the two most common being shared_buffers and sort_mem mentioned in the
          documentation. Other parameters mentioned in the documentation also
          affect performance.
    
    -------------------------------------------------------------------------------
    
    Supported Platforms
    
    PostgreSQL has been verified by the developer community to work on the
    platforms listed below. A supported platform generally means that PostgreSQL
    builds and installs according to these instructions and that the regression
    tests pass.
         Note: If you are having problems with the installation on a supported
         platform, please write to <pgsql-bugs@postgresql.org> or <pgsql-
         ports@postgresql.org>, not to the people listed here.
     _____________________________________________________________________________
    |OS__________|Processor|Version|Reported______________________|Remarks________|
    |AIX         |RS6000   |7.4    |2003-10-25, Hans-Jürgen       |see also doc/  |
    |____________|_________|_______|Schönig_(<hs@cybertec.at>)____|FAQ_AIX________|
    |BSD/OS      |x86      |7.4    |2003-10-24, Bruce Momjian     |4.3            |
    |____________|_________|_______|(<pgman@candle.pha.pa.us>)____|_______________|
    |FreeBSD     |Alpha    |7.4    |2003-10-25, Peter Eisentraut  |4.8            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |FreeBSD     |x86      |7.4    |2003-10-24, Peter Eisentraut  |4.9            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |HP-UX       |PA-RISC  |7.4    |2003-10-31, 10.20, Tom Lane   |gcc and cc; see|
    |            |         |       |(<tgl@sss.pgh.pa.us>); 2003-  |also doc/      |
    |            |         |       |11-04, 11.00, Peter Eisentraut|FAQ_HPUX       |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |IRIX        |MIPS     |7.4    |2003-11-12, Robert E.         |6.5.20, cc only|
    |            |         |       |Bruccoleri                    |               |
    |____________|_________|_______|(<bruc@stone.congenomics.com>)|_______________|
    |Linux       |Alpha    |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |arm41    |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |Itanium  |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |m68k     |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |MIPS     |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |Opteron  |7.4    |2003-11-01, Jani Averbach     |2.6            |
    |____________|_________|_______|(<jaa@cc.jyu.fi>)_____________|_______________|
    |Linux       |PPC      |7.4    |2003-10-25, Noèl Köthe        |               |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |S/390    |7.4    |2003-10-25, Noèl Köthe        |2.4            |
    |____________|_________|_______|(<noel@debian.org>)___________|_______________|
    |Linux       |Sparc    |7.4    |2003-10-24, Peter Eisentraut  |2.4, 32-bit    |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |Linux       |x86      |7.4    |2003-10-24, Peter Eisentraut  |2.4            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |Mac OS X    |PPC      |7.4    |2003-10-24, 10.2.8, Adam      |               |
    |            |         |       |Witney                        |               |
    |            |         |       |(<awitney@sghms.ac.uk>), 10.3,|               |
    |            |         |       |Marko Karppinen               |               |
    |____________|_________|_______|(<marko@karppinen.fi>)________|_______________|
    |NetBSD      |arm32    |7.4    |2003-11-12, Patrick Welche    |1.6ZE/acorn32  |
    |____________|_________|_______|(<prlw1@newn.cam.ac.uk>)______|_______________|
    |NetBSD      |x86      |7.4    |2003-10-24, Peter Eisentraut  |1.6            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |OpenBSD     |Sparc    |7.4    |2003-11-01, Peter Eisentraut  |3.4            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |OpenBSD     |x86      |7.4    |2003-10-24, Peter Eisentraut  |3.2            |
    |____________|_________|_______|(<peter_e@gmx.net>)___________|_______________|
    |Solaris     |Sparc    |7.4    |2003-10-26, Christopher Browne|2.8; see also  |
    |____________|_________|_______|(<cbbrowne@libertyrms.info>)__|doc/FAQ_Solaris|
    |Solaris     |x86      |7.4    |2003-10-26, Kurt Roeckx       |2.6; see also  |
    |____________|_________|_______|(<Q@ping.be>)_________________|doc/FAQ_Solaris|
    |Tru64 UNIX  |Alpha    |7.4    |2003-10-25, 5.1b, Peter       |               |
    |            |         |       |Eisentraut                    |               |
    |            |         |       |(<peter_e@gmx.net>); 2003-10- |               |
    |            |         |       |29, 4.0g, Alessio Bragadini   |               |
    |____________|_________|_______|(<alessio@albourne.com>)______|_______________|
    |UnixWare    |x86      |7.4    |2003-11-03, Larry Rosenman    |7.1.3; join    |
    |            |         |       |(<ler@lerctr.org>)            |test may fail, |
    |            |         |       |                              |see also doc/  |
    |____________|_________|_______|______________________________|FAQ_SCO________|
    |Windows with|x86      |7.4    |2003-10-24, Peter Eisentraut  |see doc/       |
    |Cygwin______|_________|_______|(<peter_e@gmx.net>)___________|FAQ_MSWIN______|
    |Windows     |x86      |7.4    |2003-10-27, Dave Page         |native is      |
    |            |         |       |(<dpage@vale-housing.co.uk>)  |client-side    |
    |            |         |       |                              |only, see      |
    |____________|_________|_______|______________________________|documentation__|
    
    Unsupported Platforms: The following platforms are either known not to work, or
    they used to work in a previous release and we did not receive explicit
    confirmation of a successful test with version 7.4 at the time this list was
    compiled. We include these here to let you know that these platforms *could* be
    supported if given some attention.
     ________________________________________________________________________________
    |OS________|Processor__|Version|Reported_______________________|Remarks__________|
    |BeOS      |x86        |7.2    |2001-11-29, Cyril Velter       |needs updates to |
    |__________|___________|_______|(<cyril.velter@libertysurf.fr>)|semaphore_code___|
    |Linux     |PlayStation|7.4    |2003-11-02, Peter Eisentraut   |needs new        |
    |          |2          |       |(<peter_e@gmx.net>)            |config.guess, -- |
    |          |           |       |                               |disable-         |
    |          |           |       |                               |spinlocks, #undef|
    |          |           |       |                               |HAS_TEST_AND_SET,|
    |          |           |       |                               |disable tas_dummy|
    |__________|___________|_______|_______________________________|()_______________|
    |Linux     |PA-RISC    |7.4    |2003-10-25, Noèl Köthe         |needs --disable- |
    |          |           |       |(<noel@debian.org>)            |spinlocks,       |
    |__________|___________|_______|_______________________________|otherwise_OK_____|
    |NetBSD    |Alpha      |7.2    |2001-11-20, Thomas Thai        |1.5W             |
    |__________|___________|_______|(<tom@minnesota.com>)__________|_________________|
    |NetBSD    |MIPS       |7.2.1  |2002-06-13, Warwick Hunter     |1.5.3            |
    |__________|___________|_______|(<whunter@agile.tv>)___________|_________________|
    |NetBSD    |PPC        |7.2    |2001-11-28, Bill Studenmund    |1.5              |
    |__________|___________|_______|(<wrstuden@netbsd.org>)________|_________________|
    |NetBSD    |Sparc      |7.2    |2001-12-03, Matthew Green      |32- and 64-bit   |
    |__________|___________|_______|(<mrg@eterna.com.au>)__________|builds___________|
    |NetBSD    |VAX        |7.1    |2001-03-30, Tom I. Helbekkmo   |1.5              |
    |__________|___________|_______|(<tih@kpnQwest.no>)____________|_________________|
    |QNX 4 RTOS|x86        |7.2    |2001-12-10, Bernd Tegge        |needs updates to |
    |          |           |       |(<tegge@repas-aeg.de>)         |semaphore code;  |
    |          |           |       |                               |see also doc/    |
    |__________|___________|_______|_______________________________|FAQ_QNX4_________|
    |QNX RTOS  |x86        |7.2    |2001-11-20, Igor Kovalenko     |patches available|
    |v6        |           |       |(<Igor.Kovalenko@motorola.com>)|in archives, but |
    |__________|___________|_______|_______________________________|too_late_for_7.2_|
    |SCO       |x86        |7.3.1  |2002-12-11, Shibashish Satpathy|5.0.4, gcc; see  |
    |OpenServer|___________|_______|(<shib@postmark.net>)__________|also_doc/FAQ_SCO_|
    |SunOS 4   |Sparc      |7.2    |2001-12-04, Tatsuo Ishii (<t-  |                 |
    |__________|___________|_______|ishii@sra.co.jp>)______________|_________________|