Is there a way to create site maps with out saving them

[auctionbaylive]

I need to create many different site maps under my main domain  sample [ External links are visible to forum administrators only ] so I want to create site maps for each save them to my pc then submit them to google, my problem is that for some reason the site map script only indexes 12,000 pages  or is there a way to index more than that? I have a shared hosting account

Thanks

[XML-Sitemaps Support]

Hello,

could you please PM me your generator URL and an example URL that is not included in sitemap and how it can be reached from homepage?