rts 9/105 on open extend

Hi,

I have a cobol program that make:

OPEN EXTEND FILE

and give

FILE  status 9/105, Memory allocation error

The server is Windows 2012 with  256 Gb RAM (free 254 Gb), and I use Cobol Server 2013 2.3.1

I have to change SORTSPACE\SORTTEMPSPACE?

thanks

bye