Posts nice URLs problem

I have read some data from another web site and inserted into the wp_posts table as posts. That web site is having many categories so those have been kept as child-parent posts and only the last post is having data. So in the end I have around 10000 posts.

It is not able to insert all those nice URLs in wp_options table while we are accessing the site.

Is there any way to insert/update only the current hierarchy of the posts while retrieving?

Thanks in advance
Praveen