D5-brane in anti-de-Sitter space and Penrose limit

We consider the Penrose limit of the solution of D5-brane given in the anti-de-Sitter space and analyse the shape of the D5-brane in the pp-wave background. We find that the D5-brane leads to the branes and the throats connecting the branes. The branes spread on R4 with periodic values of the light-cone time x+ and the throats lie along x+. We also give some comments on holography.