The Attunity server is running on the unix platform but I cannot connect from studio
The Admin svc logs are reporting report 'isam crash' error!

the problem you are facing is a permission one, please make sure with the system administrator, that the user used for the irpcd process and acadmin process have permission for at least to read files on the ais installation folders, all server processes need as well, to write files (for example log files) on the installation folders. The user of the irpcd daemon and the servers (workspaces) can be located by nav_util export daemon irpcd irpcd.xml and inspecting the resultant file.