OAF Advanced Table Bean cache issue - duplicate data

Oracle EBS: R12.1.1

I am developing one complex custom OAF page, where I am using advancedTable bean to display table data.
and using vo.execute to display table data.

advancedTable contains many fields, two consecutive fields are type of  messagechoice and messagetextinput bean.
"failevent" is the partial fieaction of messagechoice bean.

deployment and bounce done perfectly.

but sometine when I login application with different users and run the page, after 5-6 different users login,
the table display duplicate data , say if duplicate comes after 4th login , 4 times duplicate data
and "failevent" ( which is partial fier action of messagechoice bean) value set to message text input field.