Can I fragment over-sized PST file?
 

Suggest me best Solution please

Yes

We can smoothly fragment oversized PST files into small by date, size, year and folder by the help of best tool is KDETools PST Splitter. This PST Splitter divides large PST items based on date, size, year and folder within all Version of Outlook and Windows.

More Info: Split PST Tool to Divide/Split Large Outlook PST File into Smaller Parts