I am not familiar with unix system. Today, i hv implemented some software and it requires some 'so' library. It cant locate the required 'so' files in /usr/local/lib. So i decide to cp all the files in /usr/local/lib to /usr/lib. Then the java desktop system cant function properly. I cant login to the JDS but can still login to common desktop envirnoment. Is there any method other than format to solve this situation? I guess the reason is after executing the cp command, some of the files in /usr/lib is overwriiten by those in /usr/local/lib.

You can restore the overwritten files from the installation media.

You first need to identify which files were affected.

how to go to the installation media?
insert the cd of solaris and then can enter?

The installation media is indeed the DVD, the CDs or their iso images.

Before restoring, you first need to identify what files were overwritten.

I would say fresh install time - or if you had not really added anything and you have another sol10 machine that is up on your network then NFS share /usr/local/lib and rsync it over to the messed up machine - but thats a suggestion and what I would do - also all you needed to do was add /usr/local/lib to your path - or make a link to the .so files in /usr/lib - thats what the forums are for - ask - and I mean that in the nicest way

Regards