What is the role of the Oracle SGA (System Global Area)?
The SGA is responsible for storing shared memory structures such as the buffer cache, shared pool, and redo log buffers.
What is the purpose of the Oracle instance?
An Oracle instance consists of the Oracle background processes and memory structures that allow the database to function.
Which Oracle process is responsible for performing background database tasks like recovery and managing transactions?
The DBWR (Database Writer) process is responsible for writing modified data blocks from the database buffer cache to disk.
What is the Oracle Redo Log used for?
The redo log records all changes made to the database, providing durability and enabling database recovery in case of failure.
What is the Oracle Archive Log Mode?
In archive log mode, Oracle stores all changes to the database in archived redo log files, which are essential for point-in-time recovery.
Which Oracle memory structure holds all the necessary information for managing a user’s session?
The PGA (Program Global Area) is used to store session information, including variables, cursor state, and data for a single Oracle session.
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What is a key feature of Oracle RAC (Real Application Clusters)?
Oracle RAC allows multiple database instances to run on different servers, providing high availability and load balancing.
What is the function of the Oracle Data Pump?
Oracle Data Pump allows fast data export and import, providing tools for data migration and backup.
What is Oracle ASM (Automatic Storage Management)?
Oracle ASM is a storage solution that manages disk groups for Oracle databases and simplifies storage management.