diff --git a/pkg/pgtypes.go b/pkg/pgtypes.go
index 25326a5..6b02fbd 100644
--- a/pkg/pgtypes.go
+++ b/pkg/pgtypes.go
@@ -7,6 +7,10 @@ import (
 	"github.com/jackc/pgx/v4"
 )
 
+var (
+	oidCache = make(map[string]uint32)
+)
+
 type CustomerTaxDetails struct {
 	BusinessName string
 	VATIN        string
@@ -325,8 +329,12 @@ func registerPgTypes(ctx context.Context, conn *pgx.Conn) error {
 }
 
 func registerPgType(ctx context.Context, conn *pgx.Conn, value pgtype.Value, name string) (oid uint32, err error) {
-	if err = conn.QueryRow(ctx, "select $1::regtype::oid", name).Scan(&oid); err != nil {
-		return
+	var found bool
+	if oid, found = oidCache[name]; !found {
+		if err = conn.QueryRow(ctx, "select $1::regtype::oid", name).Scan(&oid); err != nil {
+			return
+		}
+		oidCache[name] = oid
 	}
 	conn.ConnInfo().RegisterDataType(pgtype.DataType{Value: value, Name: name, OID: oid})
 	return