diff --git a/core/asynctask.class.inc.php b/core/asynctask.class.inc.php
index dce31e80a..c8a3a417d 100644
--- a/core/asynctask.class.inc.php
+++ b/core/asynctask.class.inc.php
@@ -89,7 +89,7 @@ abstract class AsyncTask extends DBObject
 		// The value is set from null to planned in the setup program
 		MetaModel::Init_AddAttribute(new AttributeEnum("status", array("allowed_values"=>new ValueSetEnum('planned,running,idle,error'), "sql"=>"status", "default_value"=>"planned", "is_null_allowed"=>true, "depends_on"=>array())));
 
-		MetaModel::Init_AddAttribute(new AttributeDateTime("created", array("allowed_values"=>null, "sql"=>"created", "default_value"=>"", "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("created", array("allowed_values"=>null, "sql"=>"created", "default_value"=>"NOW()", "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeDateTime("started", array("allowed_values"=>null, "sql"=>"started", "default_value"=>"", "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeDateTime("planned", array("allowed_values"=>null, "sql"=>"planned", "default_value"=>"", "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeExternalKey("event_id", array("targetclass"=>"Event", "jointype"=> "", "allowed_values"=>null, "sql"=>"event_id", "is_null_allowed"=>true, "on_target_delete"=>DEL_SILENT, "depends_on"=>array())));
@@ -489,7 +489,7 @@ class AsyncSendNewsroom extends AsyncTask {
 		MetaModel::Init_AddAttribute(new AttributeInteger("object_id", array("allowed_values"=>null, "sql"=>"object_id", "default_value"=>null, "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("object_class", array("allowed_values"=>null, "sql"=>"object_class", "default_value"=>null, "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeText("url", array("allowed_values"=>null, "sql"=>"url", "default_value"=>null, "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
-		MetaModel::Init_AddAttribute(new AttributeDateTime("date", array("allowed_values"=>null, "sql"=>"date", "default_value"=>null, "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("date", array("allowed_values"=>null, "sql"=>"date", "default_value"=>'NOW()', "is_null_allowed"=>false, "on_target_delete"=>DEL_AUTO, "depends_on"=>array())));
 
 	}
 
diff --git a/core/bulkexport.class.inc.php b/core/bulkexport.class.inc.php
index 284ffd544..c6b99afff 100644
--- a/core/bulkexport.class.inc.php
+++ b/core/bulkexport.class.inc.php
@@ -70,7 +70,7 @@ class BulkExportResult extends DBObject
 		);
 		MetaModel::Init_Params($aParams);
 
-		MetaModel::Init_AddAttribute(new AttributeDateTime("created", array("allowed_values"=>null, "sql"=>"created", "default_value"=>"", "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("created", array("allowed_values"=>null, "sql"=>"created", "default_value"=>"NOW()", "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeInteger("user_id", array("allowed_values"=>null, "sql"=>"user_id", "default_value"=>0, "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeInteger("chunk_size", array("allowed_values"=>null, "sql"=>"chunk_size", "default_value"=>0, "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("format", array("allowed_values"=>null, "sql"=>"format", "default_value"=>'', "is_null_allowed"=>false, "depends_on"=>array())));
diff --git a/core/cmdbchange.class.inc.php b/core/cmdbchange.class.inc.php
index a14a58acd..e69673e22 100644
--- a/core/cmdbchange.class.inc.php
+++ b/core/cmdbchange.class.inc.php
@@ -33,7 +33,7 @@ class CMDBChange extends DBObject
 		);
 		MetaModel::Init_Params($aParams);
 		//MetaModel::Init_InheritAttributes();
-		MetaModel::Init_AddAttribute(new AttributeDateTime("date", array("allowed_values"=>null, "sql"=>"date", "default_value"=>"", "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("date", array("allowed_values"=>null, "sql"=>"date", "default_value"=>"NOW()", "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("userinfo", array("allowed_values"=>null, "sql"=>"userinfo", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeExternalKey("user_id", array("allowed_values"=>null, "sql"=>"user_id", "targetclass"=>"User", "is_null_allowed"=>true, "on_target_delete"=>DEL_MANUAL, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeEnum("origin", array("allowed_values"=>new ValueSetEnum(implode(',', [CMDBChangeOrigin::INTERACTIVE, CMDBChangeOrigin::CSV_INTERACTIVE, CMDBChangeOrigin::CSV_IMPORT, CMDBChangeOrigin::WEBSERVICE_SOAP, CMDBChangeOrigin::WEBSERVICE_REST, CMDBChangeOrigin::SYNCHRO_DATA_SOURCE, CMDBChangeOrigin::EMAIL_PROCESSING, CMDBChangeOrigin::CUSTOM_EXTENSION])), "sql"=>"origin", "default_value"=>CMDBChangeOrigin::INTERACTIVE, "is_null_allowed"=>true, "depends_on"=>array())));
diff --git a/core/dbproperty.class.inc.php b/core/dbproperty.class.inc.php
index 8574fea12..b03aae2fe 100644
--- a/core/dbproperty.class.inc.php
+++ b/core/dbproperty.class.inc.php
@@ -51,7 +51,7 @@ class DBProperty extends DBObject
 		MetaModel::Init_AddAttribute(new AttributeString("description", array("allowed_values"=>null, "sql"=>"description", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("value", array("allowed_values"=>null, "sql"=>"value", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 
-		MetaModel::Init_AddAttribute(new AttributeDateTime("change_date", array("allowed_values"=>null, "sql"=>"change_date", "default_value"=>"", "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("change_date", array("allowed_values"=>null, "sql"=>"change_date", "default_value"=>"NOW()", "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("change_comment", array("allowed_values"=>null, "sql"=>"change_comment", "default_value"=>null, "is_null_allowed"=>true, "depends_on"=>array())));
 	}
 
diff --git a/core/ownershiplock.class.inc.php b/core/ownershiplock.class.inc.php
index 2441ff0bb..b9d4c751b 100644
--- a/core/ownershiplock.class.inc.php
+++ b/core/ownershiplock.class.inc.php
@@ -42,8 +42,8 @@ class iTopOwnershipToken extends DBObject
 		);
 		MetaModel::Init_Params($aParams);
 		MetaModel::Init_InheritAttributes();
-		MetaModel::Init_AddAttribute(new AttributeDateTime("acquired", array("allowed_values"=>null, "sql"=>'acquired', "default_value"=>'', "is_null_allowed"=>false, "depends_on"=>array())));
-		MetaModel::Init_AddAttribute(new AttributeDateTime("last_seen", array("allowed_values"=>null, "sql"=>'last_seen', "default_value"=>'', "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("acquired", array("allowed_values"=>null, "sql"=>'acquired', "default_value"=>'NOW()', "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("last_seen", array("allowed_values"=>null, "sql"=>'last_seen', "default_value"=>'NOW()', "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("obj_class", array("allowed_values"=>null, "sql"=>'obj_class', "default_value"=>'', "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeInteger("obj_key", array("allowed_values"=>null, "sql"=>'obj_key', "default_value"=>'', "is_null_allowed"=>true, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("token", array("allowed_values"=>null, "sql"=>'token', "default_value"=>'', "is_null_allowed"=>true, "depends_on"=>array())));
diff --git a/setup/moduleinstallation.class.inc.php b/setup/moduleinstallation.class.inc.php
index f380492d7..81b68a55a 100644
--- a/setup/moduleinstallation.class.inc.php
+++ b/setup/moduleinstallation.class.inc.php
@@ -87,7 +87,7 @@ class ExtensionInstallation extends cmdbAbstractObject
 		MetaModel::Init_AddAttribute(new AttributeString("label", array("allowed_values"=>null, "sql"=>"label", "default_value"=>null, "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("version", array("allowed_values"=>null, "sql"=>"version", "default_value"=>null, "is_null_allowed"=>false, "depends_on"=>array())));
 		MetaModel::Init_AddAttribute(new AttributeString("source", array("allowed_values"=>null, "sql"=>"source", "default_value"=>null, "is_null_allowed"=>false, "depends_on"=>array())));
-		MetaModel::Init_AddAttribute(new AttributeDateTime("installed", array("allowed_values"=>null, "sql"=>"installed", "default_value"=>null, "is_null_allowed"=>false, "depends_on"=>array())));
+		MetaModel::Init_AddAttribute(new AttributeDateTime("installed", array("allowed_values"=>null, "sql"=>"installed", "default_value"=>'NOW()', "is_null_allowed"=>false, "depends_on"=>array())));
 		
 		
 		// Display lists
diff --git a/synchro/synchrodatasource.class.inc.php b/synchro/synchrodatasource.class.inc.php
index d940fe8a4..d711a31cc 100644
--- a/synchro/synchrodatasource.class.inc.php
+++ b/synchro/synchrodatasource.class.inc.php
@@ -91,7 +91,7 @@ class SynchroDataSource extends cmdbAbstractObject
 			'depends_on' => array(),
 		)));
 
-		//MetaModel::Init_AddAttribute(new AttributeDateTime("last_synchro_date", array("allowed_values"=>null, "sql"=>"last_synchro_date", "default_value"=>"", "is_null_allowed"=>false, "depends_on"=>array())));
+		//MetaModel::Init_AddAttribute(new AttributeDateTime("last_synchro_date", array("allowed_values"=>null, "sql"=>"last_synchro_date", "default_value"=>"NOW()", "is_null_allowed"=>false, "depends_on"=>array())));
 
 		// Format: seconds (int)
 		MetaModel::Init_AddAttribute(new AttributeDuration('full_load_periodicity', array(
@@ -2027,7 +2027,7 @@ class SynchroReplica extends DBObject implements iDisplay
 		MetaModel::Init_AddAttribute(new AttributeDateTime('status_last_seen', array(
 			'allowed_values' => null,
 			'sql' => 'status_last_seen',
-			'default_value' => '',
+			'default_value' => 'NOW()',
 			'is_null_allowed' => false,
 			'depends_on' => array(),
 		)));