1、显示cpu数量：
hp-unix：ioscan -C processor | grep processor | wc -l
Solais：psrinfo -v | grep "Status of processor" | wc -l
linux ：cat /proc/cpuinfo | grep processor | wc -l
AIX：lsdev -C | grep -i processor | wc -l
2、显示内存数量（top）：
solaris：prtconf | grep -i mem
AIX：root>lsdev -C |grep mem
memo： Available 00-00 Memory
LINUX：free
HP-UNIX：swapinfo -tm
3、存储空间：
df -h
4、查看内核版本命令：
cat /proc/version
uname -a
5、查看linux版本：
lsb_release -a
cat /etc/issue
6、数据库情况：
SGA：show sga
归档：archive log list
临时表空间：
select * from database_properties d where d.PROPERTY_NAME = 'DEFAULT_TEMP_TABLESPACE';
select TABLESPACE_NAME,FILE_NAME,BYTES/1024/1024 "SIZE(MB)" from dba_temp_files;
表空间：
select a.tablespace_name TABLESPACE_NAME,
a.all_space ALL_SPACE,
a.all_space - b.free_space USED_SPACE,
substr(to_char((a.all_space - b.free_space) / a.all_space * 100),
1,
4) || '%' "%USED",
b.free_space FREE_SPACE,
substr(to_char(b.free_space / a.all_space * 100), 1, 4) || '%' "%FREE"
from (select sum(bytes / 1024 / 1024) all_space, tablespace_name
from dba_data_files
group by tablespace_name
order by tablespace_name) a,
(select sum(bytes / 1024 / 1024 ) free_space, tablespace_name
from dba_free_space
group by tablespace_name
order by tablespace_name) b
where a.tablespace_name = b.tablespace_name;