looks like JDK-8025812 is not backported to 7u55

[2014-01-22T14:19:19.42] script> # ERROR: DebugServer has not become ready for timeout: 300 seconds
[2014-01-22T14:19:19.43] script> DebugServer output:
[2014-01-22T14:19:19.47] Attaching to core core.23504 from executable /export/local/aurora/CommonData/jdk/bin/java and starting RMI services, please wait...
[2014-01-22T14:19:19.47] Error attaching to core file or starting server: sun.jvm.hotspot.debugger.DebuggerException: Can't attach to the core file
[2014-01-22T14:19:19.47] at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.attach0(Native Method)
[2014-01-22T14:19:19.47] at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.attach(LinuxDebuggerLocal.java:276)
[2014-01-22T14:19:19.47] at sun.jvm.hotspot.HotSpotAgent.attachDebugger(HotSpotAgent.java:604)
[2014-01-22T14:19:19.49] at sun.jvm.hotspot.HotSpotAgent.setupDebuggerLinux(HotSpotAgent.java:565)
[2014-01-22T14:19:19.49] at sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:338)
[2014-01-22T14:19:19.49] at sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:313)
[2014-01-22T14:19:19.49] at sun.jvm.hotspot.HotSpotAgent.startServer(HotSpotAgent.java:249)
[2014-01-22T14:19:19.49] at sun.jvm.hotspot.DebugServer.run(DebugServer.java:110)