What happens when the DBWn (Database Writer) background process is triggered?A) It writes modified data blocks from the database buffer cache to disk.B) It logs transaction details to the redo log files.C) It checks for inactive user sessions and frees up resources.D) It triggers a checkpoint by sending a message to other processes.
Question
What happens when the DBWn (Database Writer) background process is triggered?A) It writes modified data blocks from the database buffer cache to disk.B) It logs transaction details to the redo log files.C) It checks for inactive user sessions and frees up resources.D) It triggers a checkpoint by sending a message to other processes.
Solution
When the DBWn (Database Writer) background process is triggered, it writes modified data blocks from the database buffer cache to disk. This is the primary function of the DBWn process in Oracle databases. It does not log transaction details to the redo log files, check for inactive user sessions and free up resources, or trigger a checkpoint by sending a message to other processes. Those tasks are handled by other background processes.
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