Re: Can I set up bidirectional Q-replication with both sender and

Yes, this should work.  The Q-Rep activity needs to be set up between
the current primary databases, e.g., primary for db A and primary for
db B.  When any HADR takeover occurs, Q-Rep needs to be restarted on
the new HADR primary.

I don't know Q-Rep well enough to talk to specifics on how to
configure it, but I suspect that if the HADR pairs sit locally, that
virtual IP addressing for each database might be helpful for Q-Rep's
reconnection after HADR takeover.

     A primary  <-------- Q-Rep -------->  B primary
         |                                     |
        HADR                                  HADR
         |                                     |
         v                                     v
     A standby                             B standby

Regards,
 - Steve P.
--
Steve Pearson, DB2 for Linux, UNIX, and Windows, IBM Software Group
"****tland" Development Team, IBM Beaverton Lab, Beaverton, OR, USA