diff --git a/htdocs/core/db/mssql.class.php b/htdocs/core/db/mssql.class.php
index e3ba9ef6a0e..09885257ef6 100644
--- a/htdocs/core/db/mssql.class.php
+++ b/htdocs/core/db/mssql.class.php
@@ -349,7 +349,7 @@ class DoliDBMssql extends DoliDB
 
 		//print "<!--".$query."-->";
 
-		dol_syslog('sql='.$query, LOG_DEBUG);
+		if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
 
 		if (! $this->database_name)
 		{
diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index 7f51091c442..c5742bf7f57 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -252,7 +252,7 @@ class DoliDBMysql extends DoliDB
 	{
 		$query = trim($query);
 
-		dol_syslog('sql='.$query, LOG_DEBUG);
+		if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
 
 		if (! $this->database_name)
 		{
diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index a88a88f369b..74d5e2b3880 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -256,7 +256,7 @@ class DoliDBMysqli extends DoliDB
     {
         $query = trim($query);
 
-	    dol_syslog('sql='.$query, LOG_DEBUG);
+	    if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
 
         if (! $this->database_name)
         {
diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index 396e780f2b6..bc9ce89193c 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2001		Fabien Seisen			<seisen@linuxfr.org>
  * Copyright (C) 2002-2005	Rodolphe Quiedeville	<rodolphe@quiedeville.org>
- * Copyright (C) 2004-2012	Laurent Destailleur		<eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2014	Laurent Destailleur		<eldy@users.sourceforge.net>
  * Copyright (C) 2004		Sebastien Di Cintio		<sdicintio@ressource-toi.org>
  * Copyright (C) 2004		Benoit Mortier			<benoit.mortier@opensides.be>
  * Copyright (C) 2005-2012	Regis Houssin			<regis.houssin@capnetworks.com>
@@ -491,7 +491,7 @@ class DoliDBPgsql extends DoliDB
 			@pg_query($this->db, 'SAVEPOINT mysavepoint');
 		}
 
-		dol_syslog('sql='.$query, LOG_DEBUG);
+		if (! in_array($query,array('BEGIN','COMMIT','ROLLBACK'))) dol_syslog('sql='.$query, LOG_DEBUG);
 
 		$ret = @pg_query($this->db, $query);