Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HSEARCH-4774 ( https://hibernate.atlassian.net/browse/HSEARCH-4774?atlOrigin=eyJpIjoiZmZ... ) Re: Database deadlock while processing events with MS SQL Server ( https://hibernate.atlassian.net/browse/HSEARCH-4774?atlOrigin=eyJpIjoiZmZ... ) I managed to reproduce the problem locally and reliably using these commands: mvn clean install -DskipTests mvn docker:start -Pci-mssql -pl build/parents/integrationtest -Dtest.database.run.mssql.skip=false i=0; while mvn verify -f integrationtest/mapper/orm-coordination-outbox-polling -Dit.test='Outbox*Concurrency*' -Dtest.database.run.skip=true -P ci-mssql -Dtest.launcher.args='-XX:ActiveProcessorCount=2' 1>/dev/null 2>&1 ; do (( i ++ )); echo "Succeeded; trying again ($i)..."; done ; echo 'Failed!' It generally takes less than 4 attempts to reproduce the problem on my machine. ( https://hibernate.atlassian.net/browse/HSEARCH-4774#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4774#add-comment?atlOrigin... ) 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#100214- sha1:6795dbd )