Results From DBA_DATA_FILES
===========================
FILE_NAME = E:\ORACLE\ORADATA\SFPL\SYSTEM01.DBF
TABLESPACE_NAME = SYSTEM
BYTES = 4293787648
BLOCKS = 524144
STATUS = AVAILABLE
RELATIVE_FNO = 1
AUTOEXTENSIBLE = YES
MAXBYTES = 3.4360E+10
MAXBLOCKS = 4194302
INCREMENT_BY = 80
USER_BYTES = 4293779456
USER_BLOCKS = 524143




Results From DBA_FREE_SPACE
===========================
TABLESPACE_NAME = SYSTEM
SUM(BYTES/1048576) = 2699.28906 (It's in MB)

when I tried to resize the data file it gives the following error.

ORA-03297: file contains used data beyond requested Resize Value.