diff --git a/services/distributeddataservice/adapter/security/src/security.cpp b/services/distributeddataservice/adapter/security/src/security.cpp
index 849c376475af00214ebd45c40c3165cf4007c297..05f95e918ef3f95b11f8c87ab38a0ec96c6eb9e7 100755
--- a/services/distributeddataservice/adapter/security/src/security.cpp
+++ b/services/distributeddataservice/adapter/security/src/security.cpp
@@ -29,8 +29,8 @@ namespace OHOS::DistributedKv {
 using namespace DistributedDB;
 std::atomic_bool Security::isInitialized_ = true;
 const char * const Security::LABEL_VALUES[S4 + 1] = {};
-const char * const Security::DATA_DE[] = {};
-const char * const Security::DATA_CE[] = {};
+const char * const Security::DATA_DE[] = { nullptr };
+const char * const Security::DATA_CE[] = { nullptr };
 
 Security::Security(const std::string &appId, const std::string &userId, const std::string &dir)
 {
@@ -180,16 +180,11 @@ const char *Security::Convert2Name(const SecurityOption &option, bool isCE)
         return nullptr;
     }
 
-    return LABEL_VALUES[option.securityLabel];
+    return nullptr;
 }
 
 int Security::Convert2Security(const std::string &name)
 {
-    for (int i = 0; i <= S4; i++) {
-        if (name == LABEL_VALUES[i]) {
-            return i;
-        }
-    }
     return NOT_SET;
 }
 
diff --git a/services/distributeddataservice/app/src/kvstore_meta_manager.cpp b/services/distributeddataservice/app/src/kvstore_meta_manager.cpp
index 9ffd34af412843ca91e104b52790dfe9a701e9b6..f23caee5782d3a1dc159d12e271c102140902885 100755
--- a/services/distributeddataservice/app/src/kvstore_meta_manager.cpp
+++ b/services/distributeddataservice/app/src/kvstore_meta_manager.cpp
@@ -150,6 +150,11 @@ void KvStoreMetaManager::InitMetaParameter()
 
 const KvStoreMetaManager::NbDelegate &KvStoreMetaManager::GetMetaKvStore()
 {
+    if (metaDelegate_ != nullptr) {
+        return metaDelegate_;
+    }
+
+    std::lock_guard<decltype(mutex_)> lock(mutex_);
     if (metaDelegate_ == nullptr) {
         metaDelegate_ = CreateMetaKvStore();
     }
@@ -178,6 +183,7 @@ KvStoreMetaManager::NbDelegate KvStoreMetaManager::CreateMetaKvStore()
         return nullptr;
     }
     auto release = [this](DistributedDB::KvStoreNbDelegate *delegate) {
+        ZLOGI("release meta data  kv store");
         if (delegate == nullptr) {
             return;
         }
diff --git a/services/distributeddataservice/app/src/kvstore_meta_manager.h b/services/distributeddataservice/app/src/kvstore_meta_manager.h
index f4542a36c417fc5ae3d0d9ff16d0e89b44ce5bbe..5457b814389e7c6aca2b784e80fe14c880ec2eef 100755
--- a/services/distributeddataservice/app/src/kvstore_meta_manager.h
+++ b/services/distributeddataservice/app/src/kvstore_meta_manager.h
@@ -309,6 +309,7 @@ private:
     static std::mutex cvMutex_;
     static MetaDeviceChangeListenerImpl listener_;
     KvStoreMetaObserver metaObserver_;
+    std::recursive_mutex mutex_;
 };
 }  // namespace DistributedKv
 }  // namespace OHOS