diff --git a/test/jdk/com/sun/jdi/ClassUnloadEventTest.java b/test/jdk/com/sun/jdi/ClassUnloadEventTest.java
index 0948f2cc994..297046ee6bb 100644
--- a/test/jdk/com/sun/jdi/ClassUnloadEventTest.java
+++ b/test/jdk/com/sun/jdi/ClassUnloadEventTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -202,7 +202,8 @@ public class ClassUnloadEventTest {
         LaunchingConnector launchingConnector = Bootstrap.virtualMachineManager().defaultConnector();
         Map<String, Connector.Argument> arguments = launchingConnector.defaultArguments();
         arguments.get("main").setValue(ClassUnloadEventTest.class.getName());
-        arguments.get("options").setValue("-Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xlog:class+unload=info -Xlog:gc");
+        String testOpts = System.getProperty("test.vm.opts", "") + " " + System.getProperty("test.java.opts", "");
+        arguments.get("options").setValue(testOpts + " -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xlog:class+unload=info -Xlog:gc");
         return launchingConnector.launch(arguments);
     }
 }
diff --git a/test/jdk/com/sun/jdi/JdbOptions.java b/test/jdk/com/sun/jdi/JdbOptions.java
index 4a6c8550fc6..33a8a87333d 100644
--- a/test/jdk/com/sun/jdi/JdbOptions.java
+++ b/test/jdk/com/sun/jdi/JdbOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,6 +25,7 @@
  * @test
  * @bug 8234808
  *
+ * @requires vm.flagless
  * @library /test/lib
  * @run main/othervm JdbOptions
  */
diff --git a/test/jdk/com/sun/jdi/OomDebugTest.java b/test/jdk/com/sun/jdi/OomDebugTest.java
index 4f824b71612..7be0047e889 100644
--- a/test/jdk/com/sun/jdi/OomDebugTest.java
+++ b/test/jdk/com/sun/jdi/OomDebugTest.java
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2016 Red Hat Inc.
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -30,6 +31,7 @@
  *  @author Severin Gehwolf <sgehwolf@redhat.com>
  *
  *  @requires vm.gc != "Z"
+ *  @requires vm.flagless
  *  @library ..
  *  @run build TestScaffold VMConnection TargetListener TargetAdapter
  *  @run compile -g OomDebugTest.java
diff --git a/test/jdk/com/sun/jdi/SunBootClassPathEmptyTest.java b/test/jdk/com/sun/jdi/SunBootClassPathEmptyTest.java
index b1eacad1e90..f54ed54a752 100644
--- a/test/jdk/com/sun/jdi/SunBootClassPathEmptyTest.java
+++ b/test/jdk/com/sun/jdi/SunBootClassPathEmptyTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -61,6 +61,12 @@ public class SunBootClassPathEmptyTest {
         }
 
         PathSearchingVirtualMachine launchVm(String cmdLine, String options) throws Exception {
+            String testOpts = System.getProperty("test.vm.opts", "") + " " + System.getProperty("test.java.opts", "");
+            if (options != null) {
+                options = testOpts + " " + options;
+            } else {
+                options = testOpts;
+            }
             Map<String, Connector.Argument> vmArgs = lc.defaultArguments();
             vmArgs.get("main").setValue(cmdLine);
             if (options != null) {
diff --git a/test/jdk/com/sun/jdi/connect/spi/DebugUsingCustomConnector.java b/test/jdk/com/sun/jdi/connect/spi/DebugUsingCustomConnector.java
index a9928bc57ee..d702e627b54 100644
--- a/test/jdk/com/sun/jdi/connect/spi/DebugUsingCustomConnector.java
+++ b/test/jdk/com/sun/jdi/connect/spi/DebugUsingCustomConnector.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,6 +27,7 @@
  *
  * This tests launches a debuggee using a custom LaunchingConnector.
  *
+ * @requires vm.flagless
  * @modules jdk.jdi/com.sun.tools.jdi
  * @build DebugUsingCustomConnector SimpleLaunchingConnector Foo NullTransportService
  * @run main/othervm DebugUsingCustomConnector