diff --git a/cpp/coverage.sh b/cpp/coverage.sh
index 63fc2d89c1..970394116e 100755
--- a/cpp/coverage.sh
+++ b/cpp/coverage.sh
@@ -94,6 +94,7 @@ ${LCOV_CMD} -r "${FILE_INFO_OUTPUT}" -o "${FILE_INFO_OUTPUT_NEW}" \
     "/usr/*" \
     "*/boost/*" \
     "*/cmake_build/*_ep-prefix/*" \
+    "src/core/cmake_build*" \
 
 # gen html report
 ${LCOV_GEN_CMD} "${FILE_INFO_OUTPUT_NEW}" --output-directory ${DIR_LCOV_OUTPUT}/
\ No newline at end of file
diff --git a/cpp/unittest/db/utils.cpp b/cpp/unittest/db/utils.cpp
index 006b5f491d..1deed68546 100644
--- a/cpp/unittest/db/utils.cpp
+++ b/cpp/unittest/db/utils.cpp
@@ -125,12 +125,11 @@ zilliz::milvus::engine::DBMetaOptions MySQLTest::getDBMetaOptions() {
 zilliz::milvus::engine::Options MySQLDBTest::GetOptions() {
     auto options = engine::OptionsFactory::Build();
     options.meta.path = "/tmp/milvus_test";
-//    options.meta.backend_uri = DBTestEnvironment::getURI();
-//
-//    if(options.meta.backend_uri.empty()) {
-//        options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
-//    }
-    options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
+    options.meta.backend_uri = DBTestEnvironment::getURI();
+
+    if(options.meta.backend_uri.empty()) {
+        options.meta.backend_uri = "mysql://root:Fantast1c@192.168.1.194:3306/";
+    }
 
     return options;
 }