Many properties of oxide high temperature non-classical superconductors (critical temperature and concentration, effect of magnetic field and paramagnetic admixtures, isotopic effects, correlation length, temperature dependence of heat capacity, effect of ionizing radiation and hydrostatic pressure) are either similar or even the same to those of solutions with oscillatory redox reactions. These arguments form the basis of our new concept of oxide high temperature superconductivity that is a result of oscillatory redox reaction at the participation of atoms of each of two elements in different oxidation states in multicomponent oxides or similar solid systems.