18 Questions
What is the role of the PGA_AGGREGATE_TARGET parameter in Oracle?
It defines the total amount of memory allocated to all user processes.
What type of process is responsible for storing specific user information, such as host variables, session variables, cursor status, and sorting information?
Server process
What happens when the number of open sessions exceeds the value of the SESSIONS parameter?
The database will prevent additional sessions from being opened.
Which type of process is executed at the client level and facilitates interaction with the server-side database?
User process
What is the term used to describe the total PGA (Program Global Area) memory allocated to all server processes in Oracle?
PGA Aggregate
What information is stored in the PGA (Program Global Area) by the server process?
User-specific information such as host variables and session variables
What is the purpose of the Large Pool parameter in Oracle databases?
To cache data related to message queues
Which memory zone is a private memory area dedicated to users in Oracle databases?
Program Global Area (PGA)
What happens if the sum of manually defined memory zone sizes exceeds SGA_MAX_SIZE in Oracle's manual management?
The system throws an error and prevents database startup
Which parameter determines whether the automatic management of SGA is enabled in Oracle databases?
SGA_TARGET
What is the primary function of the Log Buffer in Oracle's automatic management of SGA?
Handle log data temporarily before writing it to disk
How does the PGA differ from the SGA in Oracle databases?
SGA is a shared memory region while PGA is a private memory area
What is the function of the System Global Area (SGA)?
It is a memory space shared by all processes of the instance.
What does the LOCK_SGA parameter do in relation to the System Global Area (SGA)?
It locks the SGA in physical memory.
Which component of the Shared Pool stores information about recently executed SQL queries?
Library Cache
What is the primary function of the DB Buffer Cache?
To store recently used data blocks.
What happens to the System Global Area (SGA) when an instance starts?
It is allocated and shared by all instance processes.
How does increasing the size of the System Global Area (SGA) affect server performance?
Improves performance by allowing more memory for caching.
This quiz covers important parameters in Oracle databases such as LARGE_POOL_SIZE and STREAMS_POOL_SIZE. It also includes information about the SGA, its components, and automatic memory management.
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