jackc/pgx · error

too many parameter oids

Error message

too many parameter oids

What it means

Error "too many parameter oids" thrown in jackc/pgx.

Source

Thrown at pgproto3/parse.go:66

			return &invalidMessageFormatErr{messageType: "Parse"}
		}
		dst.ParameterOIDs = append(dst.ParameterOIDs, binary.BigEndian.Uint32(buf.Next(4)))
	}

	return nil
}

// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *Parse) Encode(dst []byte) ([]byte, error) {
	dst, sp := beginMessage(dst, 'P')

	dst = append(dst, src.Name...)
	dst = append(dst, 0)
	dst = append(dst, src.Query...)
	dst = append(dst, 0)

	if len(src.ParameterOIDs) > math.MaxUint16 {
		return nil, errors.New("too many parameter oids")
	}
	dst = pgio.AppendUint16(dst, uint16(len(src.ParameterOIDs)))
	for _, oid := range src.ParameterOIDs {
		dst = pgio.AppendUint32(dst, oid)
	}

	return finishMessage(dst, sp)
}

// MarshalJSON implements encoding/json.Marshaler.
func (src Parse) MarshalJSON() ([]byte, error) {
	return json.Marshal(struct {
		Type          string
		Name          string
		Query         string
		ParameterOIDs []uint32
	}{
		Type:          "Parse",

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgproto3/parse.go:66 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/c4109370e6cb45ac.json. Report an issue: GitHub.