diff --git a/src/main/java/com/yohann/ocihelper/service/impl/OciServiceImpl.java b/src/main/java/com/yohann/ocihelper/service/impl/OciServiceImpl.java
index 795a831..1aa4932 100644
--- a/src/main/java/com/yohann/ocihelper/service/impl/OciServiceImpl.java
+++ b/src/main/java/com/yohann/ocihelper/service/impl/OciServiceImpl.java
@@ -292,7 +292,7 @@ public void createInstanceBatch(CreateInstanceBatchParams params) {
             BeanUtils.copyProperties(params.getInstanceInfo(), instanceParams);
             instanceParams.setUserId(userId);
             return instanceParams;
-        }).collect(Collectors.toList()).parallelStream().forEach(this::createInstance);
+        }).collect(Collectors.toList()).forEach(this::createInstance);
     }
 
     @Override