Note the following functionalities of various background processes: 1. Record the checkpoint information in data file headers. 2. Perform recovery at instance startup. 3. Cleanup unused temporary segments. 4. Free the resources used by a user process when it fails. 5. Dynamically register database services with listeners. 6. Monitor sessions for idle session timeout. Which option has the correct functionalities listed for a background process()
- 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
正确答案:C
答案解析:有
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