Converting 5.7 to 6.0 question

Operating system – AIX

I’m in the process of switching our production threads from 5.7, patch 2 to 6.0.  

So far, so good.  The thing that is holding back the remaining theads is the TCL pre-procs.  I’m doing a controlled conversion as opposed to a ‘big-bang’ all at once.

From what I know [limited as it may be] the $LIBPATH system variable is used to determine the TCL libraries.

I’m able to change the environment information when needed, but how do I swap the 6.0 LIBPATH without affecting the current production live threads?

Thanks.

Mike C.