what are bitmap indexes? How does they work?
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What is a server parameter file in oracle?
If a parameter is used in a query without being previously defined, what diff. exist betw. report 2.0 and 2.5 when the query is applied ?
Explain the use of online redo log files in oracle.
What privilege is needed for a user to connect to oracle server?
What is transport network substrate (tns) in oracle?
How to convert characters to dates in oracle?
what is shell?
Difference between cartesian join and cross join?
 How to use an oracle sequence generator in a mapping?
What is a nvl function? How can it be used?
Explain what are clusters?
What query tells you how much space a tablespace named test is taking up, and how much space is remaining?