What is the cache hit ratio, what impact does it have on
performance of an Oracle database and what is involved in
tuning it?
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What are the components of Logical database structure of ORACLE database?
What is a subquery?
Explain oracle’s server parameter file.
Why required to run root.sh at the time of installation and what exactly it will do
After update how do u know how many records got updated
From the following identify the non schema object: packages, triggers, public synonyms, tables and indexes.
How can we find the size of a database?
Difference between pre-select and pre-query
What are a query and state the different types of queries and their uses?
I just want to maintain data like an employee can belongs to 3 or more departments . We can resolve this by using composite key but it avoids normalization rules. So Can anyone tell me how can I maintain data.
What is a nvl function? How can it be used?
Why does for update in oracle 8 cause an ora-01002 error?
Oracle General 
