Commits all rows previously bulk copied from program variables and sent to SQL Server by bcp_sendrow.
Bulk copy batches define transactions. When an application uses bcp_bind and bcp_sendrow to bulk copy rows from program variables to SQL Server tables, the rows are committed only when the program calls bcp_batch or bcp_done.
You can call bcp_batch once every n rows or when there is a lull in incoming data (as in a telemetry application). If an application does not call bcp_batch the bulk copied rows are committed only when bcp_done is called.