The Tablespace Freespace Alerts are not triggering on the Oracle databases. When testing the Alert in the DPA Web Console, the following error displays:
No Online Non-Autoextensible Tablespaces Found
This is because the Datafiles are configured on the Database to auto-extend. Even if just one Data File can auto-extend then the alert would incorrectly trigger. This is because the Tablespace would be approaching the Thresholds but it is not an issue as Oracle will simply grab more disk space to allocate to it.
DPA does not currently factor in what the Max File Size is and consider that in the calculation.
Currently, the only workaround is to create a Custom Alert which factors the Max File Size into the calculation.