diff --git a/src/observer/virtual_table/ob_all_virtual_px_target_monitor.cpp b/src/observer/virtual_table/ob_all_virtual_px_target_monitor.cpp
index c7744a58a3..a55e15f93e 100644
--- a/src/observer/virtual_table/ob_all_virtual_px_target_monitor.cpp
+++ b/src/observer/virtual_table/ob_all_virtual_px_target_monitor.cpp
@@ -20,6 +20,17 @@ using namespace oceanbase::common;
 using namespace oceanbase::sql;
 namespace observer
 {
+
+ObAllVirtualPxTargetMonitor::ObAllVirtualPxTargetMonitor()
+    : tenand_array_(),
+      tenant_idx_(0),
+      target_info_array_(),
+      target_usage_idx_(0)
+{
+  svr_ip_buff_[0] = '\0';
+  peer_ip_buff_[0] = '\0';
+}
+
 int ObAllVirtualPxTargetMonitor::init()
 {
   int ret = OB_SUCCESS;
diff --git a/src/observer/virtual_table/ob_all_virtual_px_target_monitor.h b/src/observer/virtual_table/ob_all_virtual_px_target_monitor.h
index 9c91e68f9f..bff1627bdf 100644
--- a/src/observer/virtual_table/ob_all_virtual_px_target_monitor.h
+++ b/src/observer/virtual_table/ob_all_virtual_px_target_monitor.h
@@ -26,7 +26,7 @@ namespace observer
 class ObAllVirtualPxTargetMonitor: public common::ObVirtualTableScannerIterator
 {
 public:
-  explicit ObAllVirtualPxTargetMonitor() {}
+  ObAllVirtualPxTargetMonitor();
   virtual ~ObAllVirtualPxTargetMonitor() {}
 public:
   int init();