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I have a Oracle schema with 70+ tables. I want to create simple page which can display the HDD space occupied by the tables. How I can get this value with SQL query?
P.S And how I can get the Oracle architecture version?
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select OWNER,sum(bytes)/1024/1024/1000 “SIZE_IN_GB” from dba_segments group by owner order by owner; Share via: Facebook.
The size of the database is the space the files physically consume on disk. You can find this with: select sum(bytes)/1024/1024 size_in_mb from dba_data_files; But not all this space is necessarily allocated.
For a list of tables in the current schema, use the Show Tables command. For a list of views in the current schema, use the Show Views command. For a list of available schemas, use the Show Schemas command. If the table or view is in a particular schema, qualify it with the schema name.
You probably want
SELECT sum(bytes) FROM dba_segments WHERE owner = <<owner of schema>> If you are logged in as the schema owner, you can also
SELECT SUM(bytes) FROM user_segments That will give you the space allocated to the objects owned by the user in whatever tablespaces they are in. There may be empty space allocated to the tables that is counted as allocated by these queries.
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