If the size of PST file exceeds its limit then the PST file creates problem. Then there is only way to reduce this problem i.e. - to split the large PST file into small parts. Here I shared you the link: Manual tricks of PST split from where you will learn the 3 simple manual methods to break PST file into many PST files. This manual tricks gives the outstanding result and doesn’t damage the original data from PST file while splitting it to small PST parts.
 

Really very advanced and well programmed http://www.edbtopst-converter.com/ software that repairs and restores damaged EDB file to usable PST file within few clicks. It is a professional application which can immediately repair and convert damaged Exchange EDB files to usable Outlook PST file swiftly.This utility successfully extract EDB data and export emails from EDB file with all emails metadata to, bcc, cc, date , time and subject etc.It can export Exchange mailboxes & public folders into PST and EML, MSG formats and creates individual PST file for each mailbox to break 2gb PST size issue.With free trial version, one can see the result of all recovered outlook mailboxes on their screen.