public addPrueba(element :any)
  {
    var sql = "INSERT INTO perro (edad, nombre) VALUES (:a, :b)"
    var binds = [
      { a: 1, b: "Taco" },
      { a: 23, b: "PUTABIDA" },
    ];

    var options = {
      autoCommit: true,
      bindDefs: {
        a: { type: oracledb.NUMBER },
        b: { type: oracledb.STRING, maxSize: 64 }
      }
    };

    oracledb.getConnection({
      user: "system",
      password: "51264",
      connectString: "localhost:1521/xe"
    }).then(async (connection: oracledb.IConnection) => {
      console.log("Connection finally created in constructor")
      await connection.execute(sql, binds, options).
        then((result)=>{console.log("Rows: \n", result.rowsAffected)})
        .catch((err)=>{console.error("Promise rejected - ",err)});
      connection.close().then( () => { console.log("Conection closed.") } )
      .catch((err) => { console.error(err.message) });
    }).catch((err: any) => {
      console.error(err.message);
    });
  }
}