diff --git a/src/storage/compaction/ob_partition_merge_policy.cpp b/src/storage/compaction/ob_partition_merge_policy.cpp
index 8639aa7f5b..79b1cbaf51 100644
--- a/src/storage/compaction/ob_partition_merge_policy.cpp
+++ b/src/storage/compaction/ob_partition_merge_policy.cpp
@@ -638,12 +638,14 @@ int ObPartitionMergePolicy::check_need_mini_minor_merge(
   const ObTabletTableStore &table_store = tablet.get_table_store();
   const ObTabletID &tablet_id = tablet.get_tablet_meta().tablet_id_;
   int64_t delay_merge_schedule_interval = 0;
-  omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
   ObTablesHandleArray minor_tables;
-  if (tenant_config.is_valid()) {
-    mini_minor_threshold = tenant_config->minor_compact_trigger;
-    delay_merge_schedule_interval = tenant_config->_minor_compaction_interval;
-  }
+  {
+    omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+    if (tenant_config.is_valid()) {
+      mini_minor_threshold = tenant_config->minor_compact_trigger;
+      delay_merge_schedule_interval = tenant_config->_minor_compaction_interval;
+    }
+  } // end of ObTenantConfigGuard
   if (table_store.get_minor_sstables().count_ <= mini_minor_threshold) {
     // total number of mini sstable is less than threshold + 1
   } else if (tablet.is_ls_tx_data_tablet()) {
@@ -1074,13 +1076,15 @@ int ObPartitionMergePolicy::refine_mini_minor_merge_result(ObGetMergeTablesResul
     if (OB_SUCC(ret)) {
       int64_t minor_compact_trigger = DEFAULT_MINOR_COMPACT_TRIGGER;
       int64_t size_amplification_factor = OB_DEFAULT_COMPACTION_AMPLIFICATION_FACTOR;
-      omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
-      if (tenant_config.is_valid()) {
-        minor_compact_trigger = tenant_config->minor_compact_trigger;
-        if (tenant_config->_minor_compaction_amplification_factor != 0) {
-          size_amplification_factor = tenant_config->_minor_compaction_amplification_factor;
+      {
+        omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+        if (tenant_config.is_valid()) {
+          minor_compact_trigger = tenant_config->minor_compact_trigger;
+          if (tenant_config->_minor_compaction_amplification_factor != 0) {
+            size_amplification_factor = tenant_config->_minor_compaction_amplification_factor;
+          }
         }
-      }
+      } // end of ObTenantConfigGuard
       if (1 == result.handle_.get_count()) {
         LOG_INFO("minor refine, only one sstable, no need to do mini minor merge", K(result));
         result.handle_.reset();
diff --git a/src/storage/compaction/ob_partition_parallel_merge_ctx.cpp b/src/storage/compaction/ob_partition_parallel_merge_ctx.cpp
index ac92986227..23ce1285fe 100644
--- a/src/storage/compaction/ob_partition_parallel_merge_ctx.cpp
+++ b/src/storage/compaction/ob_partition_parallel_merge_ctx.cpp
@@ -77,10 +77,12 @@ int ObParallelMergeCtx::init(compaction::ObTabletMergeCtx &merge_ctx)
   } else {
     int64_t tablet_size = merge_ctx.get_merge_schema()->get_tablet_size();
     bool enable_parallel_minor_merge = false;
-    omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
-    if (tenant_config.is_valid()) {
-      enable_parallel_minor_merge = tenant_config->_enable_parallel_minor_merge;
-    }
+    {
+      omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+      if (tenant_config.is_valid()) {
+        enable_parallel_minor_merge = tenant_config->_enable_parallel_minor_merge;
+      }
+    } // end of ObTenantConfigGuard
     if (enable_parallel_minor_merge && tablet_size > 0 && merge_ctx.param_.is_mini_merge()) {
       if (OB_FAIL(init_parallel_mini_merge(merge_ctx))) {
         STORAGE_LOG(WARN, "Failed to init parallel setting for mini merge", K(ret));
diff --git a/src/storage/compaction/ob_tenant_tablet_scheduler.cpp b/src/storage/compaction/ob_tenant_tablet_scheduler.cpp
index 306bdadba9..41ff814137 100644
--- a/src/storage/compaction/ob_tenant_tablet_scheduler.cpp
+++ b/src/storage/compaction/ob_tenant_tablet_scheduler.cpp
@@ -178,11 +178,13 @@ int ObTenantTabletScheduler::init()
 {
   int ret = OB_SUCCESS;
   int64_t schedule_interval = DEFAULT_COMPACTION_SCHEDULE_INTERVAL;
-  omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
-  if (tenant_config.is_valid()) {
-    schedule_interval = tenant_config->ob_compaction_schedule_interval;
-    fast_freeze_checker_.reload_config(tenant_config->_ob_enable_fast_freeze);
-  }
+  {
+    omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+    if (tenant_config.is_valid()) {
+      schedule_interval = tenant_config->ob_compaction_schedule_interval;
+      fast_freeze_checker_.reload_config(tenant_config->_ob_enable_fast_freeze);
+    }
+  } // end of ObTenantConfigGuard
   if (IS_INIT) {
     ret = OB_INIT_TWICE;
     LOG_WARN("ObTenantTabletScheduler has inited", K(ret));
@@ -232,11 +234,13 @@ int ObTenantTabletScheduler::reload_tenant_config()
 {
   int ret = OB_SUCCESS;
   int64_t merge_schedule_interval = DEFAULT_COMPACTION_SCHEDULE_INTERVAL;
-  omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
-  if (tenant_config.is_valid()) {
-    merge_schedule_interval = tenant_config->ob_compaction_schedule_interval;
-    fast_freeze_checker_.reload_config(tenant_config->_ob_enable_fast_freeze);
-  }
+  {
+    omt::ObTenantConfigGuard tenant_config(TENANT_CONF(MTL_ID()));
+    if (tenant_config.is_valid()) {
+      merge_schedule_interval = tenant_config->ob_compaction_schedule_interval;
+      fast_freeze_checker_.reload_config(tenant_config->_ob_enable_fast_freeze);
+    }
+  } // end of ObTenantConfigGuard
   if (IS_NOT_INIT) {
     ret = OB_NOT_INIT;
     LOG_WARN("The ObTenantTabletScheduler has not been inited", K(ret));