2022-11-25

select a.tablespace_name,a.bytes/1024/1024 "sum MB",  (a.bytes-b.bytes)/1024/1024 "used MB",b.bytes/1024/1024 "free MB",
round (((a.bytes-b.bytes)/a.bytes)*100,2) "used%" from 
(select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name) a,
(select tablespace_name,sum(bytes) bytes,max (bytes) largest from dba_free_space group by tablespace_name)b  where a.tablespace_name=b.tablespace_name order by ((a.bytes-b.bytes)/a.bytes) desc; 

alter tablespace system add datafile '/oracle/oradata/orcl/system102.dbf' size 1024M;  

alter database datafile '/oracle/oradata/orcl/system102.dbf' autoextend on next 100m maxsize 10000m