Mention two-phase commit for having all transactions commit on all servers.

diff --git a/doc/src/sgml/failover.sgml b/doc/src/sgml/failover.sgml
index 618d0bea9dadb5b4d48cc3b49ce1aefb8b9e1f9d..63b4cf5175913c01ce982ff43fc07073818c77ce 100644 (file)
--- a/doc/src/sgml/failover.sgml
+++ b/doc/src/sgml/failover.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Failover, Replication, Load Balancing, and Clustering Options
@@ -192,9 +192,13 @@
     is because each server operates independently, and because SQL
     queries are broadcast (and not actual modified rows).  If this
     is unacceptable, applications must query such values from a
-    single server and then use those values in write queries.  Also,
-    care must be taken that all transactions either commit or abort
-    on all servers  Pgpool is an example of this type of replication.
+    single server and then use those values in write queries.
+    Also, care must be taken that all transactions either commit
+    or abort on all servers, perhaps using two-phase commit (
+    linkend="sql-prepare-transaction"
+    endterm="sql-prepare-transaction-title"> and 
+    linkend="sql-commit-prepared" endterm="sql-commit-prepared-title">.
+    Pgpool is an example of this type of replication.