用column命令修改显示的宽度
如:
09:42:08 SQL> select * from cat;TABLE_NAME                     TABLE_TYPE
------------------------------ -----------
BONUS                          TABLE
DEPT                           TABLE
EMP                            TABLE
SALGRADE                       TABLE已用时间:  00: 00: 00.94
09:44:47 SQL> column table_name format a10
09:45:02 SQL> select * from cat;TABLE_NAME TABLE_TYPE
---------- -----------
BONUS      TABLE
DEPT       TABLE
EMP        TABLE
SALGRADE   TABLE已用时间:  00: 00: 00.31
09:45:07 SQL>