Martin Panzer ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5ed8c2e... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYWY5ZWVhODFk... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-14060?atlOrigin=eyJpIjoiYWY5ZW... ) HHH-14060 ( https://hibernate.atlassian.net/browse/HHH-14060?atlOrigin=eyJpIjoiYWY5ZW... ) "Illegal attempt to associate a collection with two open sessions" during test execution ( https://hibernate.atlassian.net/browse/HHH-14060?atlOrigin=eyJpIjoiYWY5ZW... ) Change By: Martin Panzer ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5ed8c2e... ) Environment: Hibernate 5. 4 2. 17 0 , h2, Windows 10, Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f) Maven home: C:\eclipse\tools\apache-maven\bin\.. Java version: 1.8.0_181, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk1.8.0_181\jre Default locale: de_DE, platform encoding: Cp1252 OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows" ( https://hibernate.atlassian.net/browse/HHH-14060#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-14060#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#100128- sha1:e736ab1 )