NDMP also has limitations, though. The main limitation being that it does not support cross-filer recovery. You cannot back up a NetApp and restore it to a BlueArc filer -- even though both support NDMP. This is because NDMP is a communication protocol only; it does not specify the backup format. Each filer vendor therefore creates their own format, making NDMP restores between filer vendors not possible.
http://www.backupcentral.com/mr-backup-blog-mainmenu-47/13-mr-backup-blog/48-forget-ndmp-a-use-synthetic-full-backups.html
The new FILTER clause in Aggregations
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Oracle 26.1 introduces the new FILTER clause that can be used in
aggregations.
Thus, for example, *in a SUM aggregation you can use FILTER WHERE ...*
...
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