扩展临时表空间，不能用datafile，只能用tempfile

错误语句：

ALTER TABLESPACE backup_temp ADD datafile '/data/oradata/backup/backup_temp02.dbf' size 150m autoextend on next 50m MAXSIZE unlimited;

ALTER TABLESPACE backup_temp ADD tempfile '/data/oradata/backup/backup_temp02.dbf' size 150m autoextend on next 50m MAXSIZE unlimited;