安装ArcSDE的时候碰到不少问题。After installation , the system log says:
  Error (-327), No ArcSDE server license found
actually, ArcGIS License Manager has been installed in our system already succssfully. no problem with that . 但是ArcSDE的Service就是起不来。
我已经尝试成功的解决方案如下：

Pre-install:
ArcGIS License Manager ( make sure the LM is running correctly )

install ArcSDE 9.2 for Oracle:
1. Install the ArcSDE 9.2 for Oracle
2. In the post installation, make a ecp file by yourself with these content:
  
    Notes: 该license仅供参考学习，如有侵犯他人知识产权，请通知本人立即删除。
3. Modify the AUTH_KEY field in SERVER_CONFIG table with the ecp file above.   
Then start the ArcSDE service in services.msc , it works fine.

good luck!

by GuanRui 2008