NonUniqueObjectException « Oracle « JPA Q&A

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1. Multiple Primary Keys Table - Hibernate NonUniqueObjectException    stackoverflow.com

I have a table with 2 primary keys (so the combination of both of them should be unique). The schema is like this: 

TABLE="INVOICE_LOGS"
INVOICE_NUMBER  PK  non-null
INVOICE_TYPE    ...

2. NonUniqueObjectException in oracle    forum.hibernate.org

class: public class ParentPO { private java.util.List children; private long id; public ParentPO() { } public long getId() { return id; } public void setId(long id) { this.id = id; } public java.util.List getChildren() { return children; } public void setChildren(java.util.List children) { this.children = children; } } public class ChildPO { private ParentPO parent; private long id; public ChildPO() { ...

3. NonUniqueObjectException when migrating Oracle to SQLServer    forum.hibernate.org

Issue: I am migrating hibernate+spring+tomcat application from oracle10g to sqlserver2005. The application is working fine in oracle. I changed the mapping files i.e, id generation from sequence to identity. It works fine except in a case where a unsaved parent(having null id) has two child records(having null id). In this case while saving, hibernate throws org.springframework.web.util.NestedServletException: Request processing failed; nested exception ...