When I run any surefire test (with reuseForks=false) that uses java.sql classes on jdk-9 it fails with: [ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test (default-test) on project maven-surefire-plugin-example: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test failed: java.lang.NoClassDefFoundError: java/sql/SQLException: java.sql.SQLException -> [Help 1] If I run it with reuseForks=true it works fine. Has anyone seen this error yet? I thought I would check with this list before submitting a request to the surefire team. A trivial reproducer is attached. > tree src ├── pom.xml └── src ├── main │ └── java │ └── J9Example.java └── test └── java └── J9Test.java > mvn clean test -DreuseForks=false [ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test (default-test) on project maven-surefire-plugin-example: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.19.1:test failed: java.lang.NoClassDefFoundError: java/sql/SQLException: java.sql.SQLException -> [Help 1] Mike -- Michael Musgrove Transactions Team e: mmusgrov(a)redhat.com t: +44 191 243 0870 Registered in England and Wales under Company Registration No. 03798903 Directors: Michael Cunningham (US), Paul Hickey (Ireland), Matt Parson (US), Charles Peters (US) Michael Cunningham (US), Charles Peters (US), Matt Parson (US), Michael O'Neill(Ireland)