How do i size my database in which i have to do a import using db2move.

I have export file generated using db2move uitlity aroung 275 MB.
Since i am new to DB2 , i am not sure of sizing my DB.when i tried trial import only few tables got imported and most of them failed with following mesage

SQL3319N An SQL error "-289" occurred while creating the table.
SQL0289N Unable to allocate new pages in table space "ADMIN".

Any help is appreciated.

Do i need to create the required tablespaces in prior?

also i am getting following error

SQL3054N The input file is not a valid PC/IXF file. The file is too short to
contain a valid H record.