diff --git a/ecs/jskult-batch-daily/src/batch/datachange/create_inst_merge_for_laundering.py b/ecs/jskult-batch-daily/src/batch/datachange/create_inst_merge_for_laundering.py
index 2e03188f..f631d460 100644
--- a/ecs/jskult-batch-daily/src/batch/datachange/create_inst_merge_for_laundering.py
+++ b/ecs/jskult-batch-daily/src/batch/datachange/create_inst_merge_for_laundering.py
@@ -10,14 +10,15 @@ def batch_process():
 
     try:
         db.connect()
+
+        logger.debug('処理開始')
+        call_v_inst_merge_t_create(db)
+        call_inst_merge_t_create(db)
+        logger.debug('処理終了')
     except Exception as e:
         raise BatchOperationException(e)
-
-    logger.info('処理開始')
-    call_v_inst_merge_t_create(db)
-    call_inst_merge_t_create(db)
-    db.disconnect()
-    logger.info('処理終了')
+    finally:    
+        db.disconnect()
 
 
 def call_v_inst_merge_t_create(db: Database):