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What is the use of Library cache?

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What is the use of Library cache?

(a) Contains User information, such as user privileges

(b) Used to store shared SQL

(c) Log of changes made to the database

(d) All of the Mentioned

The question was posed to me by my school principal while I was bunking the class.

Origin of the question is Oracle Database 11g Architecture in portion Oracle Database 11g Architecture Options of Oracle

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Best answer
Correct choice is (b) Used to store shared SQL

Best explanation: Oracle Library cache is like a data buffer cache, except that it is not for data, but a cache for SQL PL/SQL programs and Java classes.

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