Hi,

I have created manually database
I want to create undo tablespace

CREATE UNDO TABLESPACE UNDO_TABLESPACE DATAFILE 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\AJIT\UNDO_TABLESPACE.DBF' SIZE 300M

We get an Error :
ORA-01655: unable to extend cluster SYS.C_TS# by 3 in tablespace SYSTEM
as serching this error on Google we get ALTER TABLESPACE ADD DATAFILE
Please support to me that Which tablespace will add the Datafile 'SYSTEM' or only datafile


Regards,
Neeraj Singh