About Background Processes

About Background Processes
The background processes of the Oracle instance manage memory structures,
asynchronously perform I/O to write data to a file on a disk, and perform general
maintenance tasks. The background processes consolidate functions that would
otherwise be handled by multiple Oracle Database programs running for each user
process. They monitor other Oracle Database processes to provide increased
parallelism for better performance and reliability.
The background processes that are present depend on the features that are being used
in the database. Some fundamental background processes are described in Table 5-1.
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