You can use the following query to find out the max size, allocated size of data files and see if they have been set to auto extensible:
select TABLESPACE_NAME, FILE_NAME, AUTOEXTENSIBLE, round(BYTES/1024/1024,2) Bytes,round(MAXBYTES/1024/1024,2) MaxBytes from dba_data_files order by TABLESPACE_NAME;
If IFSAPP_LOB table space is full, then you can add a new data file to the segment.
Add a new data file for a specific segment:
alter tablespace IFSAPP_LOB add datafile 'D:\Oradata\IFSPRD\IFSAPP_LOB03.DBF’ size 50M autoextend on next 20M maxsize 22000M;
Please note that you have to modify the above statement by giving appropriate values for the data file name/location and sizes(the values in bold italics).
Since this needs some DBA expertise, it is advised to acquire help from a DBA if you are not much familiar with this. You need to perform this during a maintenance down time.
Hope this helps.