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Merge branch '2.1.x' 

Closes gh-18026
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Phillip Webb 2019-08-30 21:57:21 -07:00
parent 230506b30c 6ca92418b5
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spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc
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@ -1616,6 +1616,15 @@ The most common options to set are shown in the following example:
In addition, all properties in `+spring.jpa.properties.*+` are passed through as normal JPA properties (with the prefix stripped) when the local `EntityManagerFactory` is created.
[WARNING]
====
You need to ensure that names defined under `+spring.jpa.properties.*+` exactly match those expected by your JPA provider.
Spring Boot will not attempt any kind of relaxed binding for these entries.
For example, if you want to configure Hibernate's batch size you must use `+spring.jpa.properties.hibernate.jdbc.batch_size+`.
If you use other forms, such as `batchSize` or `batch-size`, Hibernate will not apply the setting.
====
TIP: If you need to apply advanced customization to Hibernate properties, consider registering a `HibernatePropertiesCustomizer` bean that will be invoked prior to creating the `EntityManagerFactory`.
This takes precedence to anything that is applied by the auto-configuration.