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What is the view name where i can get the space in MB for tables or views?
select segment_name,sum(bytes) from dba_segmentswhere segment_name='TABLE_NAME' AND OWNER='OWNER of the table'group by segment_name
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What are the Advantages of Using DBCA
These are a few of the advantages of using DBCA:You can use its wizards to guide you through a selection of options providing an easy means of creating and tailoring your database. It allows you to provide varying levels of detail. You can provide a minimum of input and allow Oracle to make decisions for you, eliminating the need to spend time deciding how best to set parameters or structure the database....
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Virtual Indexes in Oracle
Virtual Indexes are another undocumented feature used by Oracle. Virtual indexes, as the name suggests are pseudo-indexes that will not behave the same way that normal indexes behave, and are meant for a very specific purpose.A virtual index is created in a slightly different manner than the normal indexes. A virtual index has no segment pegged to it, i.e., the DBA_SEGMENTS view will not show an entry...
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Oracle DBA Interview Questions
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