Message-ID: <gh-pgjdbc-pgjdbc-4037@github.com>
From: "harudini (@harudini)" <noreply+harudini@github.com>
To: "pgjdbc/pgjdbc" <noreply+pgjdbc-pgjdbc@github.com>
Date: Wed, 22 Apr 2026 08:20:47 +0000
Subject: [pgjdbc/pgjdbc] issue #4037: StatementTest fails with JDK 8
List-Id: <gh-pgjdbc-pgjdbc.github.com>
X-GitHub-Author-Id: 46880386
X-GitHub-Author-Login: harudini
X-GitHub-Issue: 4037
X-GitHub-Repo: pgjdbc/pgjdbc
X-GitHub-State: closed
X-GitHub-Type: issue
X-GitHub-Url: https://github.com/pgjdbc/pgjdbc/issues/4037
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**Describe the issue**
Running the test suite with JDK 8 fails, while it succeeds on JDK 11 and later.
The failure appears during execution of StatementTest, eventually resulting in an OutOfMemoryError.

This issue started after the following commit (https://github.com/pgjdbc/pgjdbc/commit/bdd930bf458e3d490d93edc4dc24a67e3a2d5964).

**Driver Version?** 

**Java Version?**
OpenJDK 8

**OS Version?**
RHEL8

**PostgreSQL Version?**
18.3

**To Reproduce**
`./gradlew -PjdkBuildVersion=17 -PjdkTestVersion=8 test`

**Expected behaviour**
All test to pass.

**Logs**
```
StatementTest > fastCloses() STANDARD_OUT
    [testFastCloses] total counts for each sql state: {0=102, 55000=898}
          2.4sec, org.postgresql.test.jdbc2.StatementTest > cancelQueryWithBrokenNetwork()
FAILURE   0.0sec, UnknownClass > executionError
    org.junit.platform.commons.JUnitException: TestEngine with ID 'junit-jupiter' failed to execute tests
        Caused by: org.junit.platform.commons.JUnitException: Error executing tests for engine junit-jupiter
            Caused by: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError
                at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)
                Caused by: java.lang.OutOfMemoryError
                    at java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:598)
                    at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1005)
                    Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded
                        at org.postgresql.test.jdbc2.StatementTest.sideStatementFinalizers(StatementTest.java:1076
```