Hi Karuppiah,
I am not clear on one thing Karupahiah, are you talking about the header of a table or are we talking about a cell that you are using as a report header?
"Repeat header on every page" relates to the header row of a table. If that table flows over onto page 2 then the header will be repeated. That's the setting in the screen shot above.
If we are talking about a cell that you have a heading the through Format Cell - Layout - Vertical the check box for Repeat on every page will do the job for you.
Remember that each page means within one tab, as you move to other tabs you will have to setup whatever tables you have on those tabs per tab.
With regards
Gill