Hi Glen,
I guess issue is with SAP basis tasks and not with java versions I tries all versions which I mentioned in my previous mails.
Also if you see in SMICM the host name buffer is empty and it is accepting only
http://ipaddress:port/rep/start/repository.jnlp (sld and rwb is accessbile.)
Likewise when i use http://hostaddress:port/rep/start/repository.jnlp it throws an error WEBPAGE cannot be Displayed.
This is not the same situation for Production system.