doc: Document valid checkpoint_timeout range

Author: Fabien COELHO 

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index f23e5dccf264883165fdee7af8675e06e3da589c..49547ee980db01843838a992f3353e589eec918b 100644 (file)
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -2274,8 +2274,9 @@ include_dir 'conf.d'
       
       
        
-        Maximum time between automatic WAL checkpoints, in
-        seconds. The default is five minutes (5min).
+        Maximum time between automatic WAL checkpoints, in seconds.
+        The valid range is between 30 seconds and one hour.
+        The default is five minutes (5min).
         Increasing this parameter can increase the amount of time needed
         for crash recovery.
         This parameter can only be set in the postgresql.conf
@@ -2294,7 +2295,6 @@ include_dir 'conf.d'
        
         Specifies the target of checkpoint completion, as a fraction of
         total time between checkpoints. The default is 0.5.
-
         This parameter can only be set in the postgresql.conf
         file or on the server command line.