diff --git a/airflow/jobs/scheduler_job.py b/airflow/jobs/scheduler_job.py
index eba3c27831123..47eba3ed93d7a 100644
--- a/airflow/jobs/scheduler_job.py
+++ b/airflow/jobs/scheduler_job.py
@@ -326,12 +326,21 @@ def _executable_task_instances_to_queued(self, max_tis: int, session: Session) -
 
             query = query.limit(max_tis)
 
-            task_instances_to_examine: list[TI] = with_row_locks(
-                query,
-                of=TI,
-                session=session,
-                **skip_locked(session=session),
-            ).all()
+            timer = Stats.timer("scheduler.critical_section_query_duration")
+            timer.start()
+
+            try:
+                task_instances_to_examine: list[TI] = with_row_locks(
+                    query,
+                    of=TI,
+                    session=session,
+                    **skip_locked(session=session),
+                ).all()
+                timer.stop(send=True)
+            except OperationalError as e:
+                timer.stop(send=False)
+                raise e
+
             # TODO[HA]: This was wrong before anyway, as it only looked at a sub-set of dags, not everything.
             # Stats.gauge('scheduler.tasks.pending', len(task_instances_to_examine))
 
diff --git a/docs/apache-airflow/logging-monitoring/metrics.rst b/docs/apache-airflow/logging-monitoring/metrics.rst
index e81e10cab255b..e37c5aa785458 100644
--- a/docs/apache-airflow/logging-monitoring/metrics.rst
+++ b/docs/apache-airflow/logging-monitoring/metrics.rst
@@ -161,6 +161,7 @@ Name                                                Description
                                                     start date and the actual DagRun start date
 ``scheduler.critical_section_duration``             Milliseconds spent in the critical section of scheduler loop --
                                                     only a single scheduler can enter this loop at a time
+``scheduler.critical_section_query_duration``       Milliseconds spent running the critical section task instance query
 ``scheduler.scheduler_loop_duration``               Milliseconds spent running one scheduler loop
 ``dagrun.<dag_id>.first_task_scheduling_delay``     Seconds elapsed between first task start_date and dagrun expected start
 ``collect_db_dags``                                 Milliseconds taken for fetching all Serialized Dags from DB