生产网上有很多oracle数据库，做ntpd同步时，要注意些什么？

hiwork

ntpd server端要加 -x 参数吗？

1. 
   
2. Normally,  the  time  is  slewed  if  the  offset is less than the step threshold, which is 128 ms by default, and
   
3. stepped if above the threshold. This option sets the threshold to 600 s, which is well within the accuracy  window
   
4. to  set  the clock manually. Note: Since the slew rate of typical Unix kernels is limited to 0.5 ms/s, each second
   
5. of adjustment requires an amortization interval of 2000 s. Thus, an adjustment as much as 600 s will  take  almost
   
6. 14 days to complete. This option can be used with the -g and -q options. See the tinker command for other options.
   
7. Note: The kernel time discipline is disabled with this option.
   

复制代码

kns1024wh

使用rdate就可以实现内部的同步