diff --git a/src/share/vm/services/diagnosticCommand.cpp b/src/share/vm/services/diagnosticCommand.cpp
index 39c7ce25e4b92f16e5994547c54d9e425896bd4d..78f4c223988c8d7314e6493173e7ec7f44a54772 100644
--- a/src/share/vm/services/diagnosticCommand.cpp
+++ b/src/share/vm/services/diagnosticCommand.cpp
@@ -31,6 +31,33 @@
 #include "services/heapDumper.hpp"
 #include "services/management.hpp"
 
+void DCmdRegistrant::register_dcmds(){
+  // Registration of the diagnostic commands
+  // First boolean argument specifies if the command is enabled
+  // Second boolean argument specifies if the command is hidden
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
+#ifndef SERVICES_KERNEL   // Heap dumping not supported
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
+#endif // SERVICES_KERNEL
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
+
+}
+
+#ifndef HAVE_EXTRA_DCMD
+void DCmdRegistrant::register_dcmds_ext(){
+   // Do nothing here
+}
+#endif
+
+
 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
   _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
   _cmd("command name", "The name of the command for which we want help",
diff --git a/src/share/vm/services/diagnosticCommand.hpp b/src/share/vm/services/diagnosticCommand.hpp
index 436664a9cad53102f0990916e615727d52cc1768..c226a4ad6e9dfe820fe2e1911612c73641353110 100644
--- a/src/share/vm/services/diagnosticCommand.hpp
+++ b/src/share/vm/services/diagnosticCommand.hpp
@@ -34,6 +34,7 @@
 #include "services/diagnosticArgument.hpp"
 #include "services/diagnosticCommand.hpp"
 #include "services/diagnosticFramework.hpp"
+#include "services/diagnosticCommand_ext.hpp"
 
 class HelpDCmd : public DCmdWithParser {
 protected:
diff --git a/src/share/vm/services/diagnosticCommand_ext.hpp b/src/share/vm/services/diagnosticCommand_ext.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..7b7e94f2ccc41d3c85bdc12be13fece48ed6a141
--- /dev/null
+++ b/src/share/vm/services/diagnosticCommand_ext.hpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2012, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_EXT_HPP
+#define SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_EXT_HPP
+
+#undef HAVE_EXTRA_DCMD
+
+#endif // SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
diff --git a/src/share/vm/services/diagnosticFramework.hpp b/src/share/vm/services/diagnosticFramework.hpp
index e3b78bb384b1a4430c46f542c8caa298e98f4cc8..2fe4d476ddd5573fd0077a37cd37e578223a8536 100644
--- a/src/share/vm/services/diagnosticFramework.hpp
+++ b/src/share/vm/services/diagnosticFramework.hpp
@@ -387,4 +387,17 @@ public:
   }
 };
 
+// This class provides a convenient way to register Dcmds, without a need to change
+// management.cpp every time. Body of these two methods resides in
+// diagnosticCommand.cpp
+
+class DCmdRegistrant : public AllStatic {
+
+private:
+    static void register_dcmds();
+    static void register_dcmds_ext();
+
+    friend class Management;
+};
+
 #endif // SHARE_VM_SERVICES_DIAGNOSTICFRAMEWORK_HPP
diff --git a/src/share/vm/services/management.cpp b/src/share/vm/services/management.cpp
index 5decfaa99948a51fc6601124160e98b4e159260b..48a5b6a0997dd74f8971584d310d68b734f8a51c 100644
--- a/src/share/vm/services/management.cpp
+++ b/src/share/vm/services/management.cpp
@@ -119,21 +119,8 @@ void Management::init() {
   _optional_support.isThreadAllocatedMemorySupported = 1;
 
   // Registration of the diagnostic commands
-  // First boolean argument specifies if the command is enabled
-  // Second boolean argument specifies if the command is hidden
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
-#ifndef SERVICES_KERNEL   // Heap dumping not supported
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
-#endif // SERVICES_KERNEL
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
-  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
+  DCmdRegistrant::register_dcmds();
+  DCmdRegistrant::register_dcmds_ext();
 }
 
 void Management::initialize(TRAPS) {