13.10.1Use of the wrong transaction manager for a specific DataSource

Use thecorrectPlatformTransactionManagerimplementation based on your choice of transactional technologies and requirements. Used properly, the Spring Framework merely provides a straightforward and portable abstraction. If you are using global transactions, you_must_use theorg.springframework.transaction.jta.JtaTransactionManagerclass (or anapplication server-specific subclassof it) for all your transactional operations. Otherwise the transaction infrastructure attempts to perform local transactions on resources such as containerDataSourceinstances. Such local transactions do not make sense, and a good application server treats them as errors.