There is not such a database... as far as I am aware.
If what you need are primers to amplify the rpoB of Eerwinia spp. you can find them in the following paper:
Brady, C., Cleenwerck, I., Venter, S. N., Vancanneyt, M., Swings, J. & Coutinho, T. A. (2008). Phylogeny and identification of Pantoea species associated with plants, humans and the natural environment based on multilocus sequence analysis (MLSA). Syst Appl Microbiol 31, 447-460.