diff options
| author | Bruce Momjian <bruce@momjian.us> | 2010-05-25 14:50:56 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2010-05-25 14:50:56 +0000 |
| commit | 7ff79fa42578ba711c73bfd6bf712f828bf479e1 (patch) | |
| tree | 4da25d79eea5dd0bef95ed7aabcde9c8ddd37a39 /doc/src | |
| parent | 555a02f910490b94c48c1c479e9da2e4759ad25f (diff) | |
| download | postgresql-7ff79fa42578ba711c73bfd6bf712f828bf479e1.tar.gz postgresql-7ff79fa42578ba711c73bfd6bf712f828bf479e1.zip | |
Add pg_upgrade docs about binary compatibility, per Robert Haas.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/pgupgrade.sgml | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/doc/src/sgml/pgupgrade.sgml b/doc/src/sgml/pgupgrade.sgml index 0b9b5c3cc99..e5c054c1375 100644 --- a/doc/src/sgml/pgupgrade.sgml +++ b/doc/src/sgml/pgupgrade.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/pgupgrade.sgml,v 1.10 2010/05/24 17:43:39 momjian Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/pgupgrade.sgml,v 1.11 2010/05/25 14:50:56 momjian Exp $ --> <sect1 id="pgupgrade"> <title>pg_upgrade</title> @@ -16,6 +16,16 @@ 9.0.1 -> 9.0.4. </para> + <para> + <application>pg_upgrade</> works because, though new features are + regularly added to Postgres major releases, the internal data storage + format rarely changes. <application>pg_upgrade</> does its best to + make sure the old and new clusters are binary-compatible, e.g. by + checking for compatible compile-time settings. It is important that + any external modules are also binary compatibile, though this cannot + be checked by <application>pg_upgrade</>. + </para> + <sect2> <title>Supported Versions</title> @@ -440,7 +450,6 @@ psql --username postgres --file script.sql postgres <sect2> <title>Limitations in migrating <emphasis>from</> PostgreSQL 8.3</title> - <para> Upgrading from PostgreSQL 8.3 has additional restrictions not present when upgrading from later PostgreSQL releases. For example, @@ -502,8 +511,8 @@ psql --username postgres --file script.sql postgres For Windows users, note that due to different integer datetimes settings used by the one-click installer and the MSI installer, it is only possible to upgrade from version 8.3 of the one-click distribution to - version 8.4 of the one-click distribution. It is not possible to upgrade - from the MSI installer to the one-click installer. + version 8.4 or later of the one-click distribution. It is not + possible to upgrade from the MSI installer to the one-click installer. </para> <para> |