Cause
This error occurs if an update operation is received by the database while it is locked for archival backup.
A user has placed the database in archive or quiesced backup mode in order to temporarily suspend update operations while a database backup is taken.
Action
Wait until the database backup is complete and then retry the operation.
As the error is continuable, you could code an exception handler that would wait an appropriate time, enter transaction state, and attempt to continue.
handler_for_3079(ex : Exception): Integer;
begin
if ex.errorCode = 3079 then
app.sleep(60000); // Wait to allow backup to complete
beginTransaction; // Enter transaction state again
return Ex_Continue;
else
return Ex_Abort_Action;
endif;
end;