Spring 数据 jpa 查询返回旧数据

Question

We have created a spring boot project using. Our application interacts with oracle database. We have created a set of jpa-repositories in which we are using findAll, findOne and other custom queries method.

We are facing a problem. Following are the steps to reproduce it:

Fire a read query on db using spring-boot application. Now Manually change the data in oracle using oracle-console for the records which are returned by above read query. Now again fire the same read query using application. After step 3, we should have received the modified results of step 2, but what we got was the data before modification. Now if we again fire the read query using application, It gives us correct values. We are not using any kind of cache in our application.

While debugging I found out that jpa-repository code is calling database and it fetches the latest result. But when this call return back to our application service, it has the old data.

Please help us identify the possible cause of it.

Answer 1

As your question is little abstract to understand I would suggest below.

Check how your database transactions are working. Seems like in Step 2 your application is in the previous transaction so hibernate is not trying to access your database again for the same key as per Hibernate cache mechanism.

However in Step 3 your application might be starting a new transaction for which hibernate is asking the database again.