单项选择题
A.Archiver Process （ARCn）：1， 2，5
B.System Monitor Process （SMON）：1，4，5
C.Process Monitor Process （PMON）：4，5，6
D.Database Writer Process （DBWn）：1，3，4
多项选择题 WhichtwostatementsaretrueaboutSharedSQLAreaandPrivateSQLArea（）
单项选择题 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 theShared Poolif the necessary configurations are done（）
单项选择题 You have executed this command to change the size of the database buffer cache： SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command： SQL> SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 （4M） Why is the value set to 4194304 and not to 2516582（）