Index: topia-service/src/java/org/codelutin/topia/migration/DatabaseManager.java
diff -u topia-service/src/java/org/codelutin/topia/migration/DatabaseManager.java:1.3 topia-service/src/java/org/codelutin/topia/migration/DatabaseManager.java:1.4
--- topia-service/src/java/org/codelutin/topia/migration/DatabaseManager.java:1.3	Fri Nov  9 16:35:45 2007
+++ topia-service/src/java/org/codelutin/topia/migration/DatabaseManager.java	Fri Nov  9 17:18:03 2007
@@ -34,9 +34,7 @@
 import org.hibernate.exception.JDBCConnectionException;
 import org.hibernate.exception.SQLGrammarException;
 import org.hibernate.mapping.ForeignKey;
-import org.hibernate.mapping.Index;
 import org.hibernate.mapping.Table;
-import org.hibernate.mapping.UniqueKey;
 import org.hibernate.tool.hbm2ddl.SchemaExport;
 
 /**
@@ -49,9 +47,9 @@
  * @author Chevallereau Benjamin
  * @author Eon Sébastien
  * @author Trève Vincent
- * @version $Revision: 1.3 $
+ * @version $Revision: 1.4 $
  *
- * Last update : $Date: 2007-11-09 16:35:45 $
+ * Last update : $Date: 2007-11-09 17:18:03 $
  */
 public class DatabaseManager {
 
@@ -211,7 +209,7 @@
 		// voir si les relation *<->* sont listees par l'iterateur
 		// -> ok, normalement c bon, c gere
 		
-		// bug: sans cette ligne, les tables many-to-many ne sont pas listées
+		// bug: sans cette ligne, les tables many-to-many ne sont pas list�es
 		oldConfiguration.buildMappings();
 		
 		Iterator i = oldConfiguration.getTableMappings();
@@ -225,7 +223,9 @@
     			while(fKeys.hasNext()) {
     			    ForeignKey fKey = fKeys.next();
     			    
-    			    logger.debug("Changing constraints name : " + fKey.getName() + " to " + fKey.getName() + vdbVersion.getValidName());
+    			    if(logger.isTraceEnabled()) {
+    			        logger.trace("Changing constraints name : " + fKey.getName() + " to " + fKey.getName() + vdbVersion.getValidName());
+    			    }
     			    fKey.setName(fKey.getName() + vdbVersion.getValidName());
     			}
     			
@@ -233,7 +233,7 @@
     			String newTableName = tableName + getTableSuffixForVersion(vdbVersion);
     			
     			// rennomage dans la config
-    			logger.debug("Renaming table " + tableName + " to " + newTableName + " " + table.hasDenormalizedTables());
+    			logger.debug("Renaming table " + tableName + " to " + newTableName);
     			table.setName(newTableName);
 			}
 		}
@@ -273,7 +273,7 @@
     protected void dropSchema(Configuration configuration) {
         // supprimer le schema en base
         SchemaExport schemaExport = new SchemaExport(configuration);
-        schemaExport.drop(true, true);
+        schemaExport.drop(false, true);
     }
 	
 	/**