How to find the size of the scheme with or without fragmentation

Hello Sir,
How to find the size of the scheme with or without fragmentation?

to find all of the bytes used by a schema, you can add the bytes for the owner of the dba_segments views.

for fragmentation, I guess you want to know about the space left between the segments.

finding depends on the design and standards of your database.

Each scheme has its own storage space? If Yes, then you can take the total space used in storage and then subtract the number of the dba_segments.

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