from google webmasters sitemap submission area the max size of a sitemap should only contain 50,000 links. so if you have a site with 100,000 pages, submit two sitemaps and place 50k links in each... hope this helps
Ok thanks a lot of this information. Actually My Site Contain 30,000 Pages. So I think I can put site map in a single file.
I believe Google will read the first 50000. If you have more than that in webmaster tools you can submit more than one sitemap.
What are the different way of Putting this site map in webmaster tool. Can you just explain me about this