diff --git a/src/storage/ls/ob_ls.cpp b/src/storage/ls/ob_ls.cpp
index 30baf28b62..c72c88589b 100755
--- a/src/storage/ls/ob_ls.cpp
+++ b/src/storage/ls/ob_ls.cpp
@@ -904,6 +904,10 @@ int ObLS::offline_(const int64_t start_ts)
   // force set allocators frozen to reduce active tenant_memory
   } else if (OB_FAIL(ls_tablet_svr_.set_frozen_for_all_memtables())) {
     LOG_WARN("tablet service offline failed", K(ret), K(ls_meta_));
+  }
+  // make sure no new dag(tablet_gc_handler may generate new dag) is generated after offline offline_compaction_
+  else if (OB_FAIL(tablet_gc_handler_.offline())) {
+    LOG_WARN("tablet gc handler offline failed", K(ret), K(ls_meta_));
   } else if (OB_FAIL(offline_compaction_())) {
     LOG_WARN("compaction offline failed", K(ret), K(ls_meta_));
   } else if (OB_FAIL(ls_wrs_handler_.offline())) {
@@ -919,8 +923,6 @@ int ObLS::offline_(const int64_t start_ts)
   // force release memtables created by force_tablet_freeze called during major
   } else if (OB_FAIL(ls_tablet_svr_.offline())) {
     LOG_WARN("tablet service offline failed", K(ret), K(ls_meta_));
-  } else if (OB_FAIL(tablet_gc_handler_.offline())) {
-    LOG_WARN("tablet gc handler offline failed", K(ret), K(ls_meta_));
   } else if (OB_FAIL(tablet_empty_shell_handler_.offline())) {
     LOG_WARN("tablet_empty_shell_handler  failed", K(ret), K(ls_meta_));
   } else {