请问在什么情况下，hibernate更新对象的时候，会失效哦？
请看下，我这执行日志


2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - 商户编号:2012062612025930;高阳编号：888000400005094
2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - 更新开始
2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - origBusiTemp.getMerchId():888000400005094
2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - origBusiTemp.getBusiCode():2012062612025930
2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - 更新结束
2012-06-26 12:03:33 INFO http-8080-6 ControllerLogger - BusiSettleMentController.queryAddContracts:2012062612025930

其对应的代码是：


logger.info("商户编号:"+busiCode+";高阳编号："+merchId);
if (busiCode != null&&!"".equals(busiCode)) {
MetaBusiTemp origBusiTemp = metaBusiBO.queryBusiTempByKey(busiCode);
if (origBusiTemp != null) {
if(!"".equals(origBusiTemp.getBusiCode())&&origBusiTemp.getBusiCode()!=null){
logger.info("更新开始");
origBusiTemp.setMerchId(merchId);
logger.info("origBusiTemp.getMerchId():"+origBusiTemp.getMerchId());
logger.info("origBusiTemp.getBusiCode():"+origBusiTemp.getBusiCode());
metaBusiBO.updateBusi(origBusiTemp);
logger.info("更新结束");
}

}
}


我现在遇到这样的问题，就是偶尔会发生数据没有更新的情况下。我就纳闷了，日志上，明明都打印了merchId是有数据的，但是更新到数据库中，依然是空的，请问在什么情况下，hibernate更新对象的时候，会失效哦？

------解决方案--------------------
update以后flush试试看
------解决方案--------------------
http://blog.csdn.net/roadanddream/article/details/6712807