P6 error during deleting EPS and importing xer files

Hi, do you have any idea how I can fix this? Thanks,

Numlock

*****************************************************
* EXCEPTION REPORT *
*****************************************************
Date: 16-Jun-08

Executable: PM.exe
Application: Primavera Project Management
Event Code: PRMDB-3725-4
Message:
PRM DBAccess Error: Database Server Error: Could not
allocate space for object
’dbo.REFRDEL’.’ndx_refrdel_table_pk’ in database
’pmdb$primavera’ because the ’PRIMARY’ filegroup is full.
Create disk space by deleting unneeded files, dropping
objects in the filegroup, adding additional files to the
filegroup, or setting autogrowth on for existing files in the
filegroup.

Context:
1: TfrmMain.actEPSDictionaryExecute
2: TCFormManager.SetToolbar
3: TfrmLogin.FormCreate
4:
5:
6:
7:
8:
9:
10:

Detail:
Type: EprmDBSQLExecutionFailure
Object Type: TCVirtualQueryGrid

Database Error:
Error Code: 0

Components
==========
ORI: ORI Win32 #
ORI/DB: PMDB,0601.0011.0001.0001
IMG: IMG Win32 #1000