diff --git a/src/storage/ob_pg_partition.cpp b/src/storage/ob_pg_partition.cpp
index b1a409110e..ed19a582e2 100644
--- a/src/storage/ob_pg_partition.cpp
+++ b/src/storage/ob_pg_partition.cpp
@@ -204,6 +204,7 @@ int ObPGPartition::get_refreshed_schema_info(int64_t& schema_version, int64_t& r
     uint64_t& schema_version_change_log_id, int64_t& schema_version_change_log_ts)
 {
   // Ensure to get the schema version first, and then get ts
+  ObSpinLockGuard guard(lock_);
   ATOMIC_STORE(&schema_version, build_index_schema_version_);
   refreshed_schema_ts = build_index_schema_version_refreshed_ts_;
   schema_version_change_log_id = schema_version_change_log_id_;
@@ -216,6 +217,7 @@ int ObPGPartition::update_build_index_schema_info(
     const int64_t schema_version, const int64_t schema_refreshed_ts, const uint64_t log_id, const int64_t log_ts)
 {
   int ret = OB_SUCCESS;
+  ObSpinLockGuard guard(lock_);
   if (schema_version < 0 || schema_refreshed_ts < 0 || log_id <= 0 || log_ts <= 0) {
     ret = OB_INVALID_ARGUMENT;
     TRANS_LOG(WARN, "invalid argument", K(schema_version), K(schema_refreshed_ts), K(log_id), K(log_ts));
diff --git a/src/storage/ob_pg_partition.h b/src/storage/ob_pg_partition.h
index 20da601a5f..7c04f91be7 100644
--- a/src/storage/ob_pg_partition.h
+++ b/src/storage/ob_pg_partition.h
@@ -143,6 +143,7 @@ private:
   int64_t gc_start_ts_;
 
   // build index schema version
+  common::ObSpinLock lock_;
   int64_t build_index_schema_version_;
   int64_t build_index_schema_version_refreshed_ts_;
   uint64_t schema_version_change_log_id_;