LockScadaSYNC Timeout at the Enhanced Failover (iFix 5.8)

I have a problem whith the Enhanced Failover (iFix 5.8). At the DebugLog in ScadaSyncMonitor (Secundary) I receive many:
LockScadaSYNC Timeout
PDB Sync - RestorePDB LockScadaPDB timed out

Any suggestions?

Tks..