diff --git a/back/src/org/kar/karideo/WebLauncher.java b/back/src/org/kar/karideo/WebLauncher.java
index c7f44e5..4b14431 100755
--- a/back/src/org/kar/karideo/WebLauncher.java
+++ b/back/src/org/kar/karideo/WebLauncher.java
@@ -59,7 +59,7 @@ public class WebLauncher {
 		migrationEngine.add(new Migration20230810());
 		migrationEngine.add(new Migration20231015());
 		WebLauncher.LOGGER.info("Migrate the DB [START]");
-		migrationEngine.migrate(GlobalConfiguration.dbConfig);
+		migrationEngine.migrateWaitAdmin(GlobalConfiguration.dbConfig);
 		WebLauncher.LOGGER.info("Migrate the DB [STOP]");
 	}
 	
diff --git a/back/src/org/kar/karideo/migration/Initialization.java b/back/src/org/kar/karideo/migration/Initialization.java
index 456a6bd..d178a8f 100644
--- a/back/src/org/kar/karideo/migration/Initialization.java
+++ b/back/src/org/kar/karideo/migration/Initialization.java
@@ -17,8 +17,13 @@ public class Initialization extends MigrationSqlStep {
 	public String getName() {
 		return "Initialization";
 	}
-
-	public Initialization() throws Exception {
+	
+	public Initialization() {
+		
+	}
+	
+	@Override
+	public void generateStep() throws Exception {
 		addClass(Data.class);
 		addClass(Media.class);
 		addClass(Type.class);
diff --git a/back/src/org/kar/karideo/migration/Migration20230810.java b/back/src/org/kar/karideo/migration/Migration20230810.java
index d67cd7c..8ae79c6 100644
--- a/back/src/org/kar/karideo/migration/Migration20230810.java
+++ b/back/src/org/kar/karideo/migration/Migration20230810.java
@@ -4,20 +4,25 @@ import org.kar.archidata.migration.MigrationSqlStep;
 import org.kar.karideo.model.UserMediaAdvancement;
 
 public class Migration20230810 extends MigrationSqlStep {
-
-	public static final int KARSO_INITIALISATION_ID = 1; 
+	
+	public static final int KARSO_INITIALISATION_ID = 1;
 	
 	@Override
 	public String getName() {
 		return "migration-2023-08-10";
 	}
 	
-	public Migration20230810() throws Exception {
+	public Migration20230810() {
+		
+	}
+	
+	@Override
+	public void generateStep() throws Exception {
 		addClass(UserMediaAdvancement.class);
-
+		
 		addAction("""
 				ALTER TABLE `userMediaAdvancement` AUTO_INCREMENT = 1000;
 				""");
 	}
-
+	
 }
diff --git a/back/src/org/kar/karideo/migration/Migration20231015.java b/back/src/org/kar/karideo/migration/Migration20231015.java
index 8b7cd98..e43b617 100644
--- a/back/src/org/kar/karideo/migration/Migration20231015.java
+++ b/back/src/org/kar/karideo/migration/Migration20231015.java
@@ -13,7 +13,12 @@ public class Migration20231015 extends MigrationSqlStep {
 		return "refactor creation and update time";
 	}
 	
-	public Migration20231015() throws Exception {
+	public Migration20231015() {
+		
+	}
+	
+	@Override
+	public void generateStep() throws Exception {
 		for (String elem : List.of("data", "media", "media_link_cover", "season", "season_link_cover", "series", "series_link_cover", "type", "type_link_cover", "user", "userMediaAdvancement")) {
 			addAction("""
 					ALTER TABLE `""" + elem + """