diff --git a/src/backend/catalog/objectaccess.c b/src/backend/catalog/objectaccess.c
index b1619b859f..d51d01fe65 100644
--- a/src/backend/catalog/objectaccess.c
+++ b/src/backend/catalog/objectaccess.c
@@ -11,6 +11,7 @@
 #include "postgres.h"
 
 #include "catalog/objectaccess.h"
+#include "catalog/pg_class.h"
 #include "catalog/pg_namespace.h"
 #include "catalog/pg_proc.h"
 
@@ -64,6 +65,22 @@ RunObjectDropHook(Oid classId, Oid objectId, int subId,
 						   (void *) &drop_arg);
 }
 
+/*
+ * RunObjectTruncateHook
+ *
+ * It is the entrypoint of OAT_TRUNCATE event
+ */
+void
+RunObjectTruncateHook(Oid objectId)
+{
+	/* caller should check, but just in case... */
+	Assert(object_access_hook != NULL);
+
+	(*object_access_hook) (OAT_TRUNCATE,
+						   RelationRelationId, objectId, 0,
+						   NULL);
+}
+
 /*
  * RunObjectPostAlterHook
  *
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 45aae5955d..5440eb9015 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -1937,6 +1937,8 @@ truncate_check_rel(Oid relid, Form_pg_class reltuple)
 				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
 				 errmsg("permission denied: \"%s\" is a system catalog",
 						relname)));
+
+	InvokeObjectTruncateHook(relid);
 }
 
 /*
diff --git a/src/include/catalog/objectaccess.h b/src/include/catalog/objectaccess.h
index 0170f1f1e4..9824adf531 100644
--- a/src/include/catalog/objectaccess.h
+++ b/src/include/catalog/objectaccess.h
@@ -37,6 +37,10 @@
  * creation or altering, because OAT_POST_CREATE or OAT_POST_ALTER are
  * sufficient for extensions to track these kind of checks.
  *
+ * OAT_TRUNCATE should be invoked just before truncation of objects. This
+ * event is equivalent to truncate permission on a relation under the
+ * default access control mechanism.
+ *
  * Other types may be added in the future.
  */
 typedef enum ObjectAccessType
@@ -45,7 +49,8 @@ typedef enum ObjectAccessType
 	OAT_DROP,
 	OAT_POST_ALTER,
 	OAT_NAMESPACE_SEARCH,
-	OAT_FUNCTION_EXECUTE
+	OAT_FUNCTION_EXECUTE,
+	OAT_TRUNCATE
 } ObjectAccessType;
 
 /*
@@ -131,6 +136,7 @@ extern void RunObjectPostCreateHook(Oid classId, Oid objectId, int subId,
 									bool is_internal);
 extern void RunObjectDropHook(Oid classId, Oid objectId, int subId,
 							  int dropflags);
+extern void RunObjectTruncateHook(Oid objectId);
 extern void RunObjectPostAlterHook(Oid classId, Oid objectId, int subId,
 								   Oid auxiliaryId, bool is_internal);
 extern bool RunNamespaceSearchHook(Oid objectId, bool ereport_on_violation);
@@ -160,6 +166,12 @@ extern void RunFunctionExecuteHook(Oid objectId);
 							  (dropflags));							\
 	} while(0)
 
+#define InvokeObjectTruncateHook(objectId)							\
+	do {															\
+		if (object_access_hook)										\
+			RunObjectTruncateHook(objectId);						\
+	} while(0)
+
 #define InvokeObjectPostAlterHook(classId,objectId,subId)			\
 	InvokeObjectPostAlterHookArg((classId),(objectId),(subId),		\
 								 InvalidOid,false)