diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index e97bbd923ab..aaecd0a4e0c 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -294,8 +294,10 @@ def sle_processing_gate(item_code, warehouse):
 	gap locks its previous-SLE locking reads take (which also block, then reveal, concurrent
 	inserts); postgres locking reads never see rows another transaction is inserting, so without
 	this gate two concurrent writers compute from the same stale previous SLE and the loser's Bin
-	write is lost. Txn-scoped and re-entrant; released at commit/rollback."""
-	if frappe.db.db_type == "postgres":
+	write is lost. Txn-scoped and re-entrant; released at commit/rollback. hasattr keeps a frappe
+	predating transaction_advisory_lock on the status quo (serialization-failure retries) instead
+	of breaking every stock submission."""
+	if frappe.db.db_type == "postgres" and hasattr(frappe.db, "transaction_advisory_lock"):
 		frappe.db.transaction_advisory_lock(("stock-sle", item_code, warehouse), timeout=REPOST_LOCK_TIMEOUT)