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What skills do you need to be an administrator?
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How can you tell if a tablespace has excessive fragmentation?
What does a hard one-to-one relationship mean (one where the relationship on both ends is "must")?
You look at the dba_rollback_segs view and see that there is a large number of shrinks and they are of relatively small size, is this a problem? How can it be fixed if it is a problem?
What do you understand by the term 'normalization'? Explain the various modes of normalization?
While taking hot backup (begin end backup) what will happens back end?
What kinds of responsibilities does a dba have in a database environment?
If you had a tablespace, test_tablespace, which consists of three files:test01.dbf, test02.dbf, and test03.dbf, and someone accidentally used the unix command"rm" to delete the file test02.dbf, what else would you need in order to recover all the data thatwas present in test_tablespace at the time that test02.dbf was deleted?
How can I learn oracle dba?
What are elements of administration?
Explain the wait events in statspack report 'db sequential real'?
What operator tests column for the absence of data?
If you see contention for library caches how you can fix it?
Oracle General 
