Why do I get "Error 500: java.lang.NoClassDefFoundError: com.micromuse.response.memento.Memento"

To diagnose this add logging to your policy;

Log(CurrentContext());

That will print out all the policy variables / objects in memory

Usually it is sufficient to log the context at the end of the policy, but you may need to put it in key areas of the script as well.

And you can use that to target objects/variables that might need to be deleted, it prints out a list like this;

  i=55.0 (Double),

  Num=55 (Long),

  ReportsPolicyName=LG_JSON_HLO_testingjs (String),

  EventContainer=(EventReaderName=DefaultEventReader) (EventContainer),

,

  MyDetailRecords=org.mozilla.javascript.NativeArray@2726e65e (NativeArray),

  PolicyName=LG_JSON_HLO_testingjs (String),

  ActionNodeName=LG_JSON_HLO_testingjs (String),

  DataItem= KeyField = NT_Physical_Disk_Busy_Critical:Primary:BBBBAAA:nt:0 C::ITM_NT_Physical_Disk####1 (DataItem)) (String)

You can tell what the object type is after every variable, things like String/Double/Long are safe but if you start seeing more unusual objects those are worth deleting.

 You can see example of cleaning in the NOI policies, such as at the end of <server>_NOI_ConfigureAnalytics.js;

delete configure;

delete noiHistory;

delete deleteConfiguration;

delete addQueueItem;

delete resultSet;

delete rollupConfig;