This option has a short form and long form: you can use bkr or BackgroundRetry.
Set this value as an integer greater than or equal to -1. If the value is -1 then dbmlsync retries an interrupted synchronization
until it completes, successfully or unsuccessfully, without being interrupted. If the value is 0 then dbmlsync does not retry
the interrupted synchronization. If the value is greater than 0 then dbmlsync retries the synchronization up to the number
of times specified until it completes. After the specified number of attempts, if the synchronization has not completed, then
it is run as a foreground synchronization so it will complete without interruption.
By default BackgroundRetry is 0.
It is an error to set BackgroundRetry to a non-zero value when the Background option has not been set to ON.
This option is ignored when synchronization is initiated using the Dbmlsync API or the SQL SYNCHRONIZE statement.