thank you @RMG and
Special thanks to @Mahesh taking time and trying at your end.
Yes I eqarlier tried with same way the way you have mention I gain retired it but everytime I am getting below error .
Could not run ‘executeOSCommand’
com.wm.app.b2b.server.ServiceException: [ISS.0086.9279] Specified working directory [\Server\c$\SoftwareAG_99\IntegrationServer\instances\default\path] is not on the allowedWorkingDirectories list in the OSCommands.cnf file
after making changes in configFile I reloaded pacakge several times.
It worked for me when I specified path as \server\c$\SoftwareAG_99\IntegrationServer\instances\default\path\
problem with it is it gaves error as INDSTR: Cannot open and FINDSTR: Out of memory
SOLUTION that I have applied as of now I wrote java service to execute command and it is giving me correct results. But it is taking more than 2 min. to fetch the results.
java code is very simple with the use of process = (Runtime.getRuntime()).exec(Command);
It would be very helpful if you give your views on executing command quickly in permisiable time. 
#webMethods#Integration-Server-and-ESB