清除cakephp tmp / cache只解决了一次保存调用的问题。可能是什么原因？

I modified the schema of mysql database(added a new table etc.), I cleared the tmp/cache(except directories). Now the save in the new table happens only once(I have multiple save calls in a for loop and save happens for all of them) and fails from next time I enter the flow.I modified the schema of mysql database(added a