marcoschulte / oracle-hibernate-timestamp-issue Goto Github PK

I put this demo together to file a bug with the hibernate team.

This demonstrates an issue with Oracle and Hibernate when using a Timestamp column. The issue appears if the JVM is not running in UTC timezone and the column does not have timezone information.

There are two unit-tests in OracleHibernateIssueApplicationTests which should both succeed, but only one does. If replacing Oracle with an H2 in Oracle mode, both tests succeed.

The tests store one entity with a timezone column set to 10:00. Then we search for all entities with time < 09:00. We should never find anything, but if the systems timezone is set to Europe/Berlin we find an entity.

They can be run with ./gradlew test.

Setting hibernate.jdbc.time_zone to UTC or Europe/Berlin does not make any difference.

To run the test on an arm mac use these steps, as the oracle docker container does not start without these extra steps.

 colima start --arch x86_64 --memory 4
 docker context use colima
 export TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE=/var/run/docker.sock
 export DOCKER_HOST="unix://${HOME}/.colima/docker.sock"
 ./gradlew test

To reuse the oracle container between test runs activate the reuse feature

echo "testcontainers.reuse.enable=true" > ~/.testcontainers.properties