ocean -nograph error

I am very new to ocean plateform and cadence tool. In my simulation, konsole screen display takes most of the time and I want to disable it. I found that "ocean -nograph" does the same. I am trying to use -nograph option but its not work. I don't get any log or output file. Could you please help me to resolve the issue. Screen log and ocean script is given below.

#####################
### ocean log - 1 ###
#####################

$ ocean -log log/test.log -nograph -replay test.ocn
*WARNING* Could not locate rgb.txt file in /usr/lib/X11
*WARNING* This file is required for color operations with the non-graphical
*WARNING* X server and many WARNING messages may follow this one!
/u/55/55/cadence/5.1.41/lnx86/IC5.1.41/tools.lnx86/dfII/bin/Xndx: error while loading shared libraries: libgdbm.so.2: cannot open shared object file: No such file or directory
*WARNING* Unable to open -nograph X Window Display "finkum:500.1"
*WARNING* (using "exec /u/55/55/cadence/5.1.41/lnx86/IC5.1.41/tools.lnx86/dfII/bin/Xndx :0&").
*WARNING* Xndx output may be found in file /tmp/Xndx<pid>.log
$

#####################
### ocean log - 2 ###
#####################

$ ocean -nograph test.ocn log/test.log
*WARNING* Could not locate rgb.txt file in /usr/lib/X11
*WARNING* This file is required for color operations with the non-graphical
*WARNING* X server and many WARNING messages may follow this one!
/u/55/55/cadence/5.1.41/lnx86/IC5.1.41/tools.lnx86/dfII/bin/Xndx: error while loading shared libraries: libgdbm.so.2: cannot open shared object file: No such file or directory
*WARNING* Unable to open -nograph X Window Display "finkum:500.1"
*WARNING* (using "exec /u/55/55/cadence/5.1.41/lnx86/IC5.1.41/tools.lnx86/dfII/bin/Xndx :0&").
*WARNING* Xndx output may be found in file /tmp/Xndx<pid>.log
$

################
### test.ocn ###
################

; load("./test.ocn")
; ocean -log log/test.log -nograph -replay test.ocn

time_start = getCurrentTime()

of = outfile("./output/test")
sprintf(v_data "Start time of simulation is %s\n", time_start)
fprintf(of v_data)
println(v_data)

drain(of)
exit