Hi Jay,
Thank you for your reply.
I noticed there was 0 byte free space available in application folder on OneClick server, which stopped to compile MIB tools and gave error 'not a valid MIB file' even though it is successfully added to the prod and test version. I have deleted some old log files and made available free space and then tried to import MIB file which has successfully saved. Thank you for your advice which helped me to lookup the OneClick server.
Regards
Newton