--- src/pgsql_plugin.c	2006-08-28 22:28:02.000000000 +0300
+++ src/pgsql_plugin.c.new	2006-08-28 22:28:22.000000000 +0300
@@ -519,7 +519,7 @@
 
   /* "LOCK ..." stuff */
   if (config.sql_dont_try_update) snprintf(lock_clause, sizeof(lock_clause), "BEGIN;");
-  else snprintf(lock_clause, sizeof(lock_clause), "BEGIN; LOCK %s IN EXCLUSIVE MODE;", config.sql_table);
+  else snprintf(lock_clause, sizeof(lock_clause), "BEGIN; LOCK %s IN ROW EXCLUSIVE MODE;", config.sql_table);
 
   /* "UPDATE ... SET ..." stuff */
   snprintf(update_clause, sizeof(update_clause), "UPDATE %s ", config.sql_table);