Guillaume Toison ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNjJjNjNjZWY2... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16890?atlOrigin=eyJpIjoiNjJjNj... ) HHH-16890 ( https://hibernate.atlassian.net/browse/HHH-16890?atlOrigin=eyJpIjoiNjJjNj... ) StackOverflowError when loading entities with @Proxy(lazy = false) ( https://hibernate.atlassian.net/browse/HHH-16890?atlOrigin=eyJpIjoiNjJjNj... ) Issue Type: Bug Affects Versions: 6.2.6 Assignee: Unassigned Components: hibernate-core Created: 04/Jul/2023 09:24 AM Priority: Major Reporter: Guillaume Toison ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) This issue is most likely in relation to HHH-16743 ( https://hibernate.atlassian.net/browse/HHH-16743 ) Closed fixed in 6.2.5 (thank you Andrea!). When an entity with @Proxy(lazy=false) is loaded through BatchInitializeEntitySelectFetchInitializer I get a StackOverFlowError. The problem seems to persist when the entities are loaded from different paths: * from a OneToMany * from a collection with a SqlSelect loader * from a Criteria query My very limited understanding of the problem is that EntitySelectFetchInitializerBuilder.canBatchInitializeBeUsed returns true when an entity has proxies disabled AND does not have subclasses. In that case the initializer is BatchInitializeEntitySelectFetchInitializer and we get a StackOverFlowError because the initializer thinks that a proxy will be created when in reality it issues a new query. I'm not sure if this should be 3 separate issues but the symptoms seem to be the same. ( https://hibernate.atlassian.net/browse/HHH-16890#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16890#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100228- sha1:4a42edc )