You can create a Storage Checkpoint that is:
To create an offline Storage Checkpoint, the instance can be either running or stopped and the database must be inactive. To create an online Storage Checkpoint, the instance must be running and the database can be either active or inactive, but it must be in archive log enabled mode.
To create a Storage Checkpoint
Access the Create a Storage Checkpoint wizard.
If you want to remove the Storage Checkpoint when the file system becomes full, click the Remove This Storage Checkpoint button.
If you want to retain the Storage Checkpoint when the file system becomes full, click the Retain This Storage Checkpoint button.
At the prompt, click Yes to proceed with creating the Storage Checkpoint.
If the Storage Checkpoint is successfully created, a confirmation message displays. To see details, click the Show Details checkbox. The details are displayed in a pop-up window.