The “activate config” results in “cnc_activate() 'sp_conf' is already active” though there is no active config:
sp_ctrl > activate config <name>
cnc_activate() 'sp_conf' is already active
One reason is, there may be residual entries in SharePlex internal tables which may interfere with the activation. The following is a quick way to resolve it if so.
Shutdown SharePlex
Run cleanup.sql located in /proddir/bin directory
Restart SharePlex and then activate again.