List two ways in which a system utility can be started.
Explain how to use the following utilities to maintain a Teradata database:
– DBS Control
– Ferret Packdisk
– Ferret Defragment
– Ferret Scandisk
– Checktable
– Table Rebuild
– Recovery Manager
– Showlocks
– UpdateSpace
– Vprocmanager
List the order in which to execute the Checktable and Scandisk utilities.
1.utilities工具启动方式
（1）输入命令行直接启动
tpareset
pdestate
dbscontrol
vprocmanager
schmon
dip
如果提示找不到命令，可输入tdatcmd命令添加命令所在目录到当前环境变量，如下：
tdatcmd
（2）Supervisor Window启动
cnsterm ==>Linux(cnsterm 1-6)
cnstool ==>Windows
Remote Console ==>ViewPoint
2.DBS Control工具
（1）查看主要内容
- General
- File System
- Performance
- Checksum
- Compression
- Statistics
- Storage (used if temperature based compression is enabled or if TVS is licensed)
（2）三种启动方式
- Command line：输入tdatcmd后，输入dbscontrol
- Viewpoint Remote Console ：选择DBS Control
- Supervisor Window：输入START DBSCONTROL
（3）显示、帮助和退出
DISPLAY GENERAL | FILESYS | PERFORMANCE | COMPRESSION | … ==>显示
HELP GENERAL | FILESYS | PERFORMANCE | COMPRESSION | … ==>帮助
QUIT ==>退出
（4）修改方法
display general
modify general = ==>Use the modify command to change flag (Century Break)
write ==>Write changes to the GDO
（5）参数信息
（6）开启并使用dbscontrol内部参数
上述描述的均为外部参数，可以使用如下命令开启并查看内部参数：
m systemfe=true
y
d i
参考文档：
Factory15 -55 System Utilities