Rename OR relocate RNAME: 1. offline tablespace: alter tablespace users offline normal; 2. use the OS command mv to rename and re-adjust the physical location: 3. rename data file: alter tablespace users rename datafile '/u02/oracle/rbdb1/user1.dbf ', '/u02/oracle/rbdb1/user2.dbf' TO'/u02/oracle/rbdb1/users01.dbf', '/u02/oracle/rbdb1/users02.dbf'; 4. we recommend that you perform a new full backup: RELOCATE: 1. determine the location and size of the tablespace data file: SQL> SELECT FILE_NAME, BYTES FROM DBA_DATA_FILES WHERE TABLESPACE_NAME = 'users'; 2. offline tablespace: alter tablespace users offline normal; 3. use the OS command to copy the file to a new location. the rname must be the name to be changed: When you rename and relocate datafiles with these procedures, only the pointers to the datafiles, as recorded in the database control file, are changed. the procedures do not physically rename any operating system files, nor do they copy files at the operating system level.4.rename datafile: alter tablespace users rename datafile '/u01/app/oracle/oradata/ORA11G/datafile/o1_mf_users_8mm4pff5 _. dbf ''/u01/app/oracle/oradata/ORA11G/datafile/USERS02.DBF 'TO'/u01/app/oracle/oradata/ORA11G/datafile/users01.dbf''/u01/app /oracle/oradata/ORA11G/datafile/USERS02.DBF '; 5. online datafile: alter tablespace users online; 6. we recommend that you back up your database.