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| -rw-r--r-- | doc/src/sgml/runtime.sgml | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml index fba67a37c79..cdc16c3ce5a 100644 --- a/doc/src/sgml/runtime.sgml +++ b/doc/src/sgml/runtime.sgml @@ -183,6 +183,15 @@ postgres$ <userinput>initdb -D /usr/local/pgsql/data</userinput> locale setting. For details see <xref linkend="multibyte">. </para> + <para> + Non<literal>C</> and and non-<literal>POSIX</> locales rely on the + operating system's collation library for character set ordering. + This controls the ordering of keys stored in indexes. For this reason, + a cluster cannot switch to an incompatible collation library version, + either through snapshot restore, binary streaming replication, or + <application>pg_upgrade</> run. + </para> + <sect2 id="creating-cluster-mount-points"> <title>Use of Secondary File Systems</title> |