A ERP database, the prompt log is full when the cost is calculated. I can't make a full backup after 123451_log.ldf. After separating the database, after deleting the .ldf file associated with it, you cannot perform additional operations, prompting 123451_log.ldf and 12345_log.ldf devices in the query analyzer to activate errors. Make sure the button is ash in the Enterprise Manager. How can this problem take the information of 123451_log.ldf in additional operations?