This image is a screenshot of the Tablespace Thresholds property page. At the top of the page are some statistics on available space, space used, and free space. Below the statistics is a section entitled "Tablespace Full Metric Thresholds." It has the following two sections, arranged side by side, going from left to right:
Space Used (%)
This section has 3 options:
Use Database Default Thresholds (with a Modify button to enable you to change the database defaults, and two read-only text fields that list the current defaults: 85% for warning, and 97% for critical).
Specify Thresholds (with two text fields, one for Warning (%) and one for Critical (%). The defaults of 85 and 97 are filled in.)
Disable Thresholds.
Free Space (MB)
This section also has 3 options:
Use Database Default Thresholds (with a Modify button to enable you to change the database defaults, and two read-only text fields that list the current defaults for Warning (MB) and Critical (MB), which are both None)
Specify Thresholds (with two text fields, one for Warning (MB) and one for Critical (MB).
Disable Thresholds
You can select an option in both the Space Used (%) section and the Free Space (MB) section.