Free a log file with status U-B-L
If a log file is backed up and all transactions within it are closed but the file is not free (status U-B-L), this logical-log file contains the most-recent checkpoint record. You can free log files with a status U-B-L.
To free log files with a status U-B-L, the database server must create a new checkpoint. You can run the following command to force a checkpoint: onmode -c
UNIX only: To force a checkpoint
with ON-Monitor,
select the Force-Ckpt option.