Fixed Joints restricts an object's movement to be dependent upon another object.This is somewhat similar to Parentingbut is implemented through physics rather than Transform hierarchy.The best scenarios for using them are ...
今天在测试环境遇到一个奇怪的问题,查询sysdate,...修改回来后,alter system set FIXED_DATE=none;System altered.select sysdate from dual;SYSDATE-2010-03-12 09:59:08恢复正常了,感觉这些功能oracle不应该这样设置,幸亏是测试系统。