On Nov 16, 2009, at 10:20 AM, Zoltan Forray/AC/VCU wrote:

> We are having too many issues with the V6.1 client on mostly Windoz
> servers.
> 
> So, we are looking at dropping back to V5.5.2.3 (still don't see a 5.3
> client), the pre-Java client, for those problem servers.
> 
> What is the impact of downleveling a client?
> 
> Is it going to force a complete backups?  What about the inactives?

Based upon past experience, sessions will likey fail with:
  ANS1357S Session rejected: Downlevel client code version

Going against a pre-existing filespace with a new client level often results in 
control blocks being changed such that you effectively commit to the new level. 
 If that results, you'd have to rename filespaces and start fresh, remembering 
to restore from the old filespace names until they become obsolete.

   Richard Sims