diff --git a/src/storage/direct_load/ob_direct_load_insert_table_ctx.h b/src/storage/direct_load/ob_direct_load_insert_table_ctx.h
index 5409702e48..da4d812e04 100644
--- a/src/storage/direct_load/ob_direct_load_insert_table_ctx.h
+++ b/src/storage/direct_load/ob_direct_load_insert_table_ctx.h
@@ -88,8 +88,8 @@ struct ObDirectLoadInsertTabletWriteCtx
 
 class ObDirectLoadInsertTabletContext
 {
-  static const int64_t PK_CACHE_SIZE = 1000000;
-  static const int64_t WRITE_BATCH_SIZE = 100000;
+  static const int64_t PK_CACHE_SIZE = 5000000;
+  static const int64_t WRITE_BATCH_SIZE = 5000000;
 public:
   ObDirectLoadInsertTabletContext();
   ~ObDirectLoadInsertTabletContext();