OCP-1Z0-052-V8.02-14题

14. These are points that describe the contents of different memory components:
1: Descriptive information or metadata about schema objects that are queried by using SQL statements
2: The run-time area for data manipulation language (DML) or data definition language (DDL) statements
3: Results of SQL queries and PL/SQL functions
4: Executable forms of SQL cursors, PL/SQL programs, and Java classes
5: The information necessary to reconstruct changes made to the database by a transaction
Which of these will be stored in the Shared Pool if the necessary configurations are done?
A.1 and 2
B.2 and 5
C.1, 3, and 4
D.3, 4, and 5
E.1, 2, 3, and 4
Answer: C
答案解析：
参考：http://docs.oracle.com/cd/E11882_01/server.112/e40540/memory.htm#CNCPT1226

Shared Pool

The shared
pool caches various types of program data. For example, the shared pool stores parsed SQL, PL/SQL code, system parameters, and data
dictionary information. The shared pool is involved in almost every operation that occurs in the database. For example, if a user executes a SQL statement, then Oracle Database accesses the shared pool.

从下图可知：





The library cache is a shared pool memory structure that stores executable SQL and PL/SQL code.

The data dictionary is accessed so often by Oracle Database that the following special memory locations are designated to hold dictionary data:

Data dictionary cache
This cache holds information about database objects. The cache is also known as the row
cache because it holds data as rows instead of buffers.

Library cache

All server processes share these caches for access to data dictionary information.
he server result cache contains the SQL query result cache andPL/SQL function result cache,
which share the same infrastructure.