It sounds like you have a configuration problem. Regardless, if you plan to work with an FMB (MMB,PLL, etc) on Windows then you need to install the Windows tools. Attempting to use the Builder, installed on Linux, on your Windows machine is not supported. It can, technically be done, but again is not supported by Oracle nor is it recommended. Refer to MOS Note 68047.1
If you are actually trying to work with the Builder on the Linux platform, then you need to consider the product certifications. CENTOS is not a certified Linux platform. Refer to the product certification guide for details. You didn't mention exactly which version you are using so I can't point you directly to the document. Determine which version you are using then find the appropriate doc from here:
Thanks for your Reply Michael,
For my Questions, I have found the Following Solutions,
2. For Font Lookup Failed I replaced the Tahoma font to Helvetica font in Form Builder.
3.For the Shortcut Keys I Just made the Num Lock 'OFF'.Amazing! Its just Working ....
For your Question
I use Centos 6.
Form Builder 18.104.22.168.0
Now My only Problem with the form builder is ...
I cannot access(open) files from Windows Server. Please tell me is there any tool or configuration to open a file from the Windows server from the linux machine?
I tried a lot but the Open Dialog box in the Form Builder shows only the local files in my linux System.
Any help is Greatly Appreciated.