java.lang.IllegalStateException: org.hibernate.TransientObjectException: object references an unsaved transient instance

 Hello All,

Today I'm sharing my learning experience, to solve the one issue while working with Springboot & Hibernate/JPA.

We often get the below error.

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.oracle.dto.Asset
	at org.hibernate.engine.internal.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:347) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]

The solution of this issue is to explicitly save the referred data.

I've solved this issue with the below code.

Transaction tx=session.beginTransaction();
        session.save(citizen);
        for (Asset asset:citizen.getAssetList()) {
            session.save(asset);
        }
        tx.commit();