diff --git a/config/config.sample.php b/config/config.sample.php
index 995a02f6d945341848c74948727164ab8dd691aa..95be5a9f0122ddf770e4774ca82a08d9f33c172e 100644
--- a/config/config.sample.php
+++ b/config/config.sample.php
@@ -135,6 +135,10 @@ $CONFIG = array(
 /* Loglevel to start logging at. 0=DEBUG, 1=INFO, 2=WARN, 3=ERROR (default is WARN) */
 "loglevel" => "",
 
+/* Append All database query and parameters to the log file.
+ (whatch out, this option can increase the size of your log file)*/
+"log_query" => false,
+
 /* Lifetime of the remember login cookie, default is 15 days */
 "remember_login_cookie_lifetime" => 60*60*24*15,
 
diff --git a/lib/config.php b/lib/config.php
index e04e96bc2799c93a2777b7028e24525314b083c2..c94eb278159164230a7d9e8ea29cca957a5d9627 100644
--- a/lib/config.php
+++ b/lib/config.php
@@ -159,9 +159,6 @@ class OC_Config{
 		if (defined('DEBUG') && DEBUG) {
 			$content .= "define('DEBUG',true);\n";
 		}
-		if (defined('LOG_QUERIES') && LOG_QUERIES) {
-			$content .= "define('LOG_QUERIES',true);\n";
-		}
 		$content .= "\$CONFIG = ";
 		$content .= var_export(self::$cache, true);
 		$content .= ";\n";
diff --git a/lib/db.php b/lib/db.php
index 6bf8c74fce02a96f020d7b023b08c23bef45187b..f28ed24df41a14b27bb34d27145238d140e735a1 100644
--- a/lib/db.php
+++ b/lib/db.php
@@ -367,7 +367,7 @@ class OC_DB {
 
 		// Optimize the query
 		$query = self::processQuery( $query );
-		if(defined('LOG_QUERIES') && LOG_QUERIES === true) {
+		if(OC_Config::getValue( "log_query", false)) {
 			OC_Log::write('core', 'DB prepare : '.$query, OC_Log::DEBUG);
 		}
 		self::connect();
@@ -954,7 +954,7 @@ class PDOStatementWrapper{
 	 * make execute return the result instead of a bool
 	 */
 	public function execute($input=array()) {
-		if(defined('LOG_QUERIES') && LOG_QUERIES === true) {
+		if(OC_Config::getValue( "log_query", false)) {
 			$params_str = str_replace("\n"," ",var_export($input,true));
 			OC_Log::write('core', 'DB execute with arguments : '.$params_str, OC_Log::DEBUG);
 		}