http://blog.163.com/dream11867@126/blog/static/2695265120121893417152/
DB2JAVIT：RC=9505解决方案
- 题记：WIN7下装DB2，启动任务中心、控制中心报DB2JAVIT：RC=9505。
解决方案：进入（计算机—>管理—>本地用户和组à用户）把用户加入到DB2ADMNS或DB2USERS，即可解决。
方法总结二：
DB2JAVIT : RC =
9505
DB2JAVIT : RC = 9505 & SQL5005C System Error
On Windows Vista, if the "DB2JAVIT : RC = 9505" error occurs when DB2 starts. Try this to see if it resolves the issues for now: for the programs (CLP, CMD, CC), right click on the launching shortcut and select "Run as administrator".
Upon reboot and logging in after the installation, this error might appear: SQL5005C System Error.To resolve this problem, add your user to the DB2ADMNS or the DB2USERS group.