hibernate/hibernate-orm · error · DetachedObjectException
Given proxy does not belong to this persistence context
Error message
Given proxy does not belong to this persistence context
What it means
Error "Given proxy does not belong to this persistence context" thrown in hibernate/hibernate-orm.
Source
Thrown at hibernate-core/src/main/java/org/hibernate/engine/internal/ProxyUtil.java:54
return lazyInitializer.getImplementation();
}
else {
return maybeProxy;
}
}
/**
* Get the entity instance underlying the given proxy, forcing
* initialization if the proxy is uninitialized. If the given
* object is not a proxy, simply return the argument.
* @throws DetachedObjectException if the given proxy does not
* belong to the given session
*/
public static Object forceInitialize(Object maybeProxy, SharedSessionContractImplementor session) {
final var lazyInitializer = extractLazyInitializer( maybeProxy );
if ( lazyInitializer != null ) {
if ( lazyInitializer.getSession() != session ) {
throw new DetachedObjectException( "Given proxy does not belong to this persistence context" );
}
//initialize + unwrap the object and return it
return lazyInitializer.getImplementation();
}
else if ( isPersistentAttributeInterceptable( maybeProxy ) ) {
final var interceptor =
asPersistentAttributeInterceptable( maybeProxy )
.$$_hibernate_getInterceptor();
if ( interceptor instanceof EnhancementAsProxyLazinessInterceptor lazinessInterceptor ) {
if ( lazinessInterceptor.getLinkedSession() != session ) {
throw new DetachedObjectException( "Given proxy does not belong to this persistence context" );
}
lazinessInterceptor.forceInitialize( maybeProxy, null );
}
return maybeProxy;
}
else {
return maybeProxy;View on GitHub (pinned to fad1729dce)
Solutions
- Only operate on proxies loaded by the current session/persistence context
- Reload the entity in the current session instead of passing a proxy from another session
When it happens
Trigger: Thrown at hibernate-core/src/main/java/org/hibernate/engine/internal/ProxyUtil.java:54 when the library encounters an invalid state.
Common situations: See trigger scenarios.
AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22).
Data as JSON: /api/errors/646644d7acdadeb1.
Report an issue: GitHub.