Document that xact commit/abort stats are collected if any stat variable

is set.

diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 9ddfc28ff49335b236ce388aa4cada151a13d9b6..07d9b2a281c036968f3faa099690636127deaa50 100644 (file)
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -1,5 +1,5 @@
 
 
 
@@ -145,10 +145,15 @@ postgres: user database host 
    overhead occurs.  These respectively determine whether a server
    process sends its current command string, disk-block-level access
    statistics, and row-level access statistics to the collector.
-   Normally these parameters are set in postgresql.conf
-   so that they apply to all server processes, but it is possible to
-   turn them on or off in individual sessions using the 
-   linkend="sql-set" endterm="sql-set-title"> command.  (To prevent
+   Additionally, per-database transaction commit and abort statistics
+   are collected if any of these parameters are set.
+  
+  
+  
+   Normally these parameters are set in postgresql.conf so
+   that they apply to all server processes, but it is possible to turn
+   them on or off in individual sessions using the 
+   linkend="sql-set" endterm="sql-set-title"> command. (To prevent
    ordinary users from hiding their activity from the administrator,
    only superusers are allowed to change these parameters with
    SET.)