My drupal 7 website is showing the titles of node only. The content body is saved in database but not showing in page. It is present while edit the node.
As I saw, if I edit the node and save it after changing format = full_html then everything is shown up. But it is not possible to do it for all nodes and comments. Please help me out.
If settings the text format to "Full HTML" solve the issue, it is probably because a filter of the the previously used text format ("Filtered HTML" I guess) was filtering the whole body content. Likely because the whole content is wrapped in a filtered-out HTML tag. You can edit the text format and review to apply filters to find which one is causing filtering your content bodies at /admin/config/content/formats.
