hibernate/hibernate-orm · error · HibernateException
Collection was evicted
Error message
Collection was evicted
What it means
Error "Collection was evicted" thrown in hibernate/hibernate-orm.
Source
Thrown at hibernate-core/src/main/java/org/hibernate/event/internal/DefaultInitializeCollectionEventListener.java:37
import static org.hibernate.pretty.MessageHelper.collectionInfoString;
import jakarta.annotation.Nonnull;
/**
* @author Gavin King
*/
public class DefaultInitializeCollectionEventListener implements InitializeCollectionEventListener {
/**
* called by a collection that wants to initialize itself
*/
@Override
public void onInitializeCollection(@Nonnull InitializeCollectionEvent event) {
final var collection = event.getCollection();
final var source = event.getSession();
final var persistenceContext = source.getPersistenceContextInternal();
final var collectionEntry = persistenceContext.getCollectionEntry( collection );
if ( collectionEntry == null ) {
throw new HibernateException( "Collection was evicted" );
}
if ( !collection.wasInitialized() ) {
final var loadedPersister = collectionEntry.getLoadedPersister();
checkPersister( collection, loadedPersister );
final Object loadedKey = collectionEntry.getLoadedKey();
if ( EVENT_LISTENER_LOGGER.isTraceEnabled() ) {
EVENT_LISTENER_LOGGER.initializingCollection(
collectionInfoString( loadedPersister, collection, loadedKey, source ) );
}
assert loadedPersister != null
&& loadedKey != null;
final boolean foundInCache = initializeFromCache( loadedKey, loadedPersister, collection, source );
if ( foundInCache ) {
EVENT_LISTENER_LOGGER.collectionInitializedFromCache();
}
else {
EVENT_LISTENER_LOGGER.collectionNotCached();View on GitHub (pinned to fad1729dce)
Solutions
- Avoid evicting collections (or their owners) from the persistence context while they are still being initialized.
- Do not call Session.clear()/evict() during lazy collection initialization; re-fetch the entity after clearing the session.
When it happens
Trigger: Thrown when a collection is accessed after its entry was evicted from the persistence context.
Common situations: Typical situations: session.evict() on the owning entity followed by lazy collection access; cache/persistence-context eviction during initialization.
AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22).
Data as JSON: /api/errors/d205c872929cd42d.
Report an issue: GitHub.