原文地址:
http://forums.allroundautomations.com/ubb/ubbthreads.php?ubb=showflat&Number=33633&PHPSESSID=2e3c1b028a66500ae8a1730abc88b993
For Oracle11g you may want to use a more recent version of Oracle Net than version 8.0.5. If you have multiple Oracle Homes, you can select the most recent one through Tools > Preferences > Oracle / Connection.