如何在春季以编程方式设置事务的回滚点？

Question

How can I specify the rollback point for a transaction in Spring?

Assuming the following scenario, I have to perform a really long insert into the db which takes quite some times (several minutes). This insert operation is wrapped in a transaction which ensures that if a problem occurs, the transaction is aborted and the database is restored to the status preceding the beginning of the transaction.

However, this solution affects the performance of the application since other transactions cannot access the db while the long transaction is being executed. I solved this issue by splitting the large transaction in several smaller transactions that perform the same operation. However, if one of these small transactions fails, the database rolls back to the status preceding this last transaction. Unfortunately, this would leave the database in an incorrect status. I want that if an errors occurs in any of these smaller transactions, the database rolls back to the status before the first small transaction ( ie exactly the same status, it would roll back if this operation is performed by a singular transaction).

Do you have any suggestion how I can achieve this using Spring transactions?

Answer 1

You should look to http://docs.spring.io/spring/docs/4.0.3.RELEASE/javadoc-api/org/springframework/transaction/TransactionStatus.html . It has required functionality: - create savepoint - release savepoint - rollback to savepoint

Of course, your transaction manager (and underlying JDBC driver, and DB) should support the functionality.

Answer 2

if you can use same primary key sequence for staging tables and production tables then you shall batch moving data from stg to prod. when a small transaction fails you can use the keys in staging table to delete from production table. that way you can restore production table to its original state