Permanent tablespace 1. Extended permanent tablespace SQL> alter tablespace users add datafile '/db/Oracle/oradata/yang/users01.dbf' size 100 m; add the data file method SQL> alter database datafile '/db/oracle/oradata/yang/users01.dbf' resize 200 m; how to modify the data file size in a tablespace SQL> alter database datafile '/db/oracle/oradata/yang/users01.dbf'Autoextend on next 10 m maxsize unlimited;Automatic expansion of tablespaces 2 SQL> create tablespace users1 datafile'/Db/oracle/oradata/yang/users01.dbf' size 100 m; 3. Delete permanent tablespace SQL> drop tablespace users1 including currents and datafiles;Delete tablespaces and objects and data files. SQL> drop tablespace users2;Delete only the tablespace SQL> alter tablespace users1 drop datafile '/db/oracle/oradata/yang/users02.dbf'; Delete the data file on the tablespace users1 to restore the tablespace1,Restore the tablespace creation SQL> create undo tablespace undotbs1 datafile '/db/oracle/oradata/yang/undo1.dbf' size 100 m;2,Restore tablespace deletion SQL> drop tablespace undotbs1 including and contents and datafiles;Delete the restored tablespace and the objects and data files. SQL> drop tablespace undotbs1; only Delete tablespaces excluding objects and data files SQL> alter tablespace undotbs1 drop datafile '/db/oracle/oradata/yang/undo1.dbf'; Delete the data files on the restored tablespace3,SQL> alter tablespace undotbs1 add datafile '/db/oracle/oradata/yang/undo02.dbf' size 30 m; add the data file method SQL> alter database datafile '/db/oracle/oradata/yang/undotbs01.dbf' resize 100 m; SQL> alter database datafile '/db/oracle/oradata/yang/undotbs02.dbf'Autoextend on next 10 m maxsize unlimited;Set auto-scaling temporary tablespace for restored tablespace1,Create temporary tablespace SQL> create temporary tablespace temp tempfile '/db/oracle/oradata/yang/temp01.dbf' size 300 m;2, Delete restored tablespace SQL> drop tablespace temp including contents and datafiles;Delete temporary tablespace and the objects and data files. SQL> drop tablespace temp;Delete tablespace only SQL> alter tablespace temp drop tempfile '/db/oracle/oradata/yang/temp01.dbf ';Delete data files in the temporary table3,Extended temporary tablespace SQL> alter tablespace temp add tempfile '/db/oracle/oradata/yang/temp02.dbf' size 100 m; add data file extended temporary tablespace SQL> alter database tempfile '/db/oracle/oradata/yang/temp02.dbf' resize 200 m; SQL> alter database datafile '/db/oracle/oradata/yang/temp02.dbf' autoextend on next 10 m maxsize unlimited; SQL> select tablespace_name from dba_tablespaces; SQL> select file_name from d Ba_data_files; SQL> select name from v $ datafile; SQL> select tablespace_name, file_name from dba_data_filesSql> select tablespace_name, table_name from user_tables where tablespace_name = 'users'; SQL> select tablespace_name, sum (bytes/1024/1024) from dba_data_files group by tablespace_name; SQL> select tablespace_name, sum (bytes/1024/1024) from dba_free_space group by tablespace_name; SQL> select name from v $ temp File; SQL> select tablespace_name, file_name from dba_temp_files ;......