diff --git a/src/common/backend/utils/cache/evtcache.cpp b/src/common/backend/utils/cache/evtcache.cpp
index 9b34305d2..e8d90b366 100644
--- a/src/common/backend/utils/cache/evtcache.cpp
+++ b/src/common/backend/utils/cache/evtcache.cpp
@@ -232,7 +232,10 @@ static int DecodeTextArrayToCString(Datum array, char ***cstringp)
  */
 static void InvalidateEventCacheCallback(Datum arg, int cacheid, uint32 hashvalue)
 {
-    MemoryContextReset(u_sess->exec_cxt.EventTriggerCacheContext);
-    u_sess->exec_cxt.EventTriggerCache = NULL;
+    /*Avoid repeated cache release,especially while rebuilding evtcache*/
+    if (u_sess->exec_cxt.EventTriggerCache != NULL) {
+        MemoryContextReset(u_sess->exec_cxt.EventTriggerCacheContext);
+        u_sess->exec_cxt.EventTriggerCache = NULL;
+    }
 }
 
diff --git a/src/gausskernel/process/tcop/utility.cpp b/src/gausskernel/process/tcop/utility.cpp
index 36d50148d..9b1a60406 100755
--- a/src/gausskernel/process/tcop/utility.cpp
+++ b/src/gausskernel/process/tcop/utility.cpp
@@ -3201,7 +3201,7 @@ void standard_ProcessUtility(processutility_context* processutility_cxt,
             uint64 processed;
             uint64 histhash;
             bool has_histhash;
-            processed = DoCopy((CopyStmt*)parse_tree, query_string, &processed);
+            DoCopy((CopyStmt*)parse_tree, query_string, &processed);
             has_histhash = ((CopyStmt*)parse_tree)->hashstate.has_histhash;
             histhash = ((CopyStmt*)parse_tree)->hashstate.histhash;
             if (completion_tag != NULL) {