This project contains an example of how to set up Spring Data to work with two independent databases. This exception occurs when you invoke nested methods/services also marked as This blog will demonstrate how to setup multiple entity managers in Spring to connect to different data sources. /** * Test the clear method of entity manager. * Loaded entities are different. Spring Data JPA - Reference ... Usually only necessary if multiple transaction managers and/or transaction-manager-ref Spring Data Document () 12 EntityManagerFactory javax.persistence.EntityManagerFactory JPA interface Interface used to interact with the entity manager factory for the persistence unit. Discussion on data access with Spring, including support for JDBC, Hibernate, JPA, iBatis, NoSQL, LDAP, and transaction management. Complete journey starting from JDBC to JPA to Spring Data JPA using an example with Spring Boot Data Jpa starter project. README.md Spring Data JPA - Multiple datasources example. Distributed transactions with multiple databases, Spring Boot, Spring Data JPA ... source transaction manager ... showing off Atomikos with Spring Boot and JPA. Java Ninja Chronicles By Norris Shelton ... Spring Data JPA with multiple entity managers. vFabric Suite 5.3 Supported Configurations and System Requirements Getting Started with vFabric Suite Quick Start Guide Overview of vFabric Suite 5.3 Load an entity, * clear the entity manager and load the same entity again. Example for using two databases w/Spring & JTA transaction manager? NetBeans JPA Spring... Download and Run ... is stored in the database when the transaction is ... objects cannot be shared by multiple entity objects. Configuring Spring and ... a third party transaction monitor enlists multiple ... manner thanks to Spring. Like most Spring Getting Started guides, you can start from scratch and complete each step, or you can bypass basic setup steps that are already familiar to you. We use Hibernate as the JPA Implementation. Explains how to use JPA to retrieve entity objects from the database. I have a simple app that use org.springframework.jdbc.datasource.DataSourceTransactionManager to manage the transactions. Could not commit JPA transaction: Transaction marked as rollbackOnly. Distributed transactions with multiple databases, Spring Boot, Spring Data JPA ... source transaction manager ... showing off Atomikos with Spring Boot and JPA. spring-data-jpa - Simplifies the development of creating a JPA-based data access layer. Using Spring Data JPA with two entity managers. Spring File Upload,Spring MVC File Upload example MultipartFile, MultipartResolver, maxUploadSize, Apache Commons FileUpload, single and multiple files. The solution here also supports Spring Data. How to setup multiple data sources with Spring and ... beans for the entity manager, transaction manger ... application to access multiple data sources via JPA. Spring Transaction Management Example JDBC, @Transactional annotation, JdbcTemplate, DataSourceTransactionManager,