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@ -11,29 +11,31 @@ version. |
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.LP |
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\fBpg_upgrade\fP must be run in two stages. In phase one you must run |
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\fBpg_upgrade\fP with your old database installation in place. In phase two, |
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\fBpg_upgrade\fP must be run on a freshly \fBinitdb\fP'ed current install. |
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In both phases, the same \fBpg_upgrade\fP script matching the newly installed |
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version must be used. |
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\fBpg_upgrade\fP must be run on a freshly \fBinitdb\fP'ed server. |
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In both phases, the same newly installed \fBpg_upgrade\fP script must be |
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used. |
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.SH Upgrading PostgreSQL with pg_upgrade |
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.LP |
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1) Back up your existing data directory, preferably by making a complete |
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dump with \fBpg_dumpall.\fP |
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1) Back up your existing data directory, preferably using \fBpg_dumpall.\fP |
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.LP |
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2) Copy the program \fIpgsql/contrib/pg_upgrade/pg_upgrade\fP from the current |
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PostgreSQL distribution somewhere into your path. |
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.LP |
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3) Change your working directory to the pgsql main directory, and type: |
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3) Run phase one of \fBpg_upgrade:\fP |
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.LP |
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.B $ pg_upgrade -1 |
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.sp |
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to collect information about the old database needed for the upgrade. |
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You may use \fI-D\fP to specify the data directory, or use PGDATA. |
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You may use \fI-D\fP to specify the data directory. By default it uses |
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the environment variable \fIPGDATA.\fP |
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.LP |
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4) Do: |
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.LP |
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.B $ cd pgsql/src |
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.br |
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.B $ make install |
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.sp |
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to install the new binaries. |
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to install the PostgreSQL binaries for the new release. |
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.LP |
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5) Do: |
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.LP |
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@ -41,8 +43,8 @@ to install the new binaries. |
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.br |
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.B $ make install |
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.sp |
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to install the \fIpg_resetxlog\fP utility which is needed by |
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\fBpg_upgrade\fP. |
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to install the \fIpg_resetxlog\fP utility, which is needed during phase |
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2 of \fBpg_upgrade\fP. |
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.LP |
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6) Run initdb to create a new template1 database containing the system |
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tables for the new release. Make sure you use settings similar to those |
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@ -52,17 +54,18 @@ used in your previous version. |
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to the server until the upgrade is complete. You may wish to start the |
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postmaster without -i or alter pg_hba.conf temporarily.) |
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.LP |
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8) Change your working directory to the pgsql main directory again, and type: |
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8) Run phase two of \fBpg_upgrade:\fP |
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.LP |
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.B $ pg_upgrade -2 |
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.sp |
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The program will do some checking to make sure everything is properly |
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configured, and will then recreate all the databases and tables you had, |
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configured, and will then recreate all your databases and tables, |
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but with no data. It will then physically move the data files |
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containing non-system tables and indexes into the proper |
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subdirectories. |
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.LP |
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9) Restore your old \fIpg_hba.conf\fP if needed to allow user logins. |
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9) Restore your old \fIpostmaster\fP flags or \fIpg_hba.conf\fP if |
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needed to allow user logins. |
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.sp |
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.LP |
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10) Carefully examine the contents of the upgraded databases. If you |
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