Hi All,

Recently I am getting below java error at the time of executing JAVA Service.
One month back it went live and no issues till yesterday but suddenly throwing error. Can anybody have idea please let me know the reason. No changes are done recently in my production WM server (7.1).


java.lang.NullPointerException at
alu.wmToalu.misc.executeOSCommand( at sun.reflect.GeneratedMethodAccessor699.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( at java.lang.reflect.Method.invoke( at at at at at at at at at at at at at at com.wm.lang.flow.FlowInvoke.invoke( at com.wm.lang.flow.FlowState.invokeNode( at com.wm.lang.flow.FlowState.step( at com.wm.lang.flow.FlowState.invoke( at at at at at at at at at at at at at$ at at

Thanks in Advance

It will be better if you can providing server log.:slight_smile:

You also can started the server from the command line in debug mode.
for windows: <wm_dir>\IntegrationServer\bin\server.bat -debug 4 -log none
for Unix: <wm_dir>/IntegrationServer/bin/server/sh -debug 4 -log none

Hi ,

It will be good if you provide the details regarding the inputs and the outputs of the Java service. Since the error message that has occurred is java.lang.NullPointerException , some input variable which the Java Service processes is missing.

Ambrish I