테이블스페이스를 만들려고 skfuserts.sql을 실행시켰을때 다음과 같은 에러가 나타납니다.

@c:\skfuserts.sql;
create tablespace skfuser
*
ERROR at line 1:
ORA-01543: tablespace 'SKFUSER' already exists

Database altered.

Tablespace altered.

Create Tablespace lob_seg_ts
*
ERROR at line 1:
ORA-01119: error in creating database file
'C:\oracle\oradata\cmserver\lobts1.dbf'
ORA-27038: skgfrcre: file exists
OSD-04010: <create> option specified, file already exists

ALTER DATABASE DATAFILE 'C:\oracle\oradata\cmserver\LOBTS1.DBF' AUTOEXTEND ON MAXSIZE UNLIMITED
*
ERROR at line 1:
ORA-01516: nonexistent log file, datafile or tempfile
'C:\oracle\oradata\cmserver\LOBTS1.DBF'

ALTER DATABASE DATAFILE 'C:\oracle\oradata\cmserver\LOBTS2.DBF' AUTOEXTEND ON MAXSIZE UNLIMITED
*
ERROR at line 1:
ORA-01516: nonexistent log file, datafile or tempfile
'C:\oracle\oradata\cmserver\LOBTS2.DBF'

ALTER TABLESPACE LOB_SEG_TS ONLINE
*
ERROR at line 1:
ORA-00959: tablespace 'LOB_SEG_TS' does not exist

Tablespace altered.

Tablespace altered.

Database altered.

Tablespace altered.

SQL> exit

어떻게 하면 좋을까요?