diff --git a/frappe/database/sequence.py b/frappe/database/sequence.py
index c89ba468bc..334fd3d71e 100644
--- a/frappe/database/sequence.py
+++ b/frappe/database/sequence.py
@@ -69,8 +69,12 @@ def set_next_val(
 	is_val_used :bool = False
 ) -> None:
 
-	is_val_used = 0 if not is_val_used else 1
+	if not is_val_used:
+		is_val_used = 0 if db.db_type == "mariadb" else "f"
+	else:
+		is_val_used = 1 if db.db_type == "mariadb" else "t"
+
 	if db.db_type == "postgres":
-		db.sql(f"SELECT SETVAL(\'\"{scrub(doctype_name + slug)}\"\', {next_val}, {is_val_used})")
+		db.sql(f"SELECT SETVAL('\"{scrub(doctype_name + slug)}\"', {next_val}, '{is_val_used}')")
 	else:
 		db.sql(f"SELECT SETVAL(`{scrub(doctype_name + slug)}`, {next_val}, {is_val_used})")
diff --git a/frappe/model/naming.py b/frappe/model/naming.py
index 25b548cac3..7e807f424e 100644
--- a/frappe/model/naming.py
+++ b/frappe/model/naming.py
@@ -329,7 +329,7 @@ def validate_name(doctype: str, name: Union[int, str], case: Optional[str] = Non
 			set_next_val(doctype, name, is_val_used=True)
 			return name
 
-		frappe.throw("Invalid name type (integer) for varchar name column")
+		frappe.throw(_("Invalid name type (integer) for varchar name column"), frappe.NameError)
 
 	if name.startswith("New "+doctype):
 		frappe.throw(_("There were some errors setting the name, please contact the administrator"), frappe.NameError)