Explanation:
The Performance Manager can monitor the performance of listeners, dispatchers and event handler.
Incorrect Answers:
4: It cannot monitor the performance of shared servers.
Reference:
OCP Oracle9i Database: New Features for Administrators, Daniel Benjamin, p. 189-201
Chapter 3: Manageability Enhancements
Oracle 9i New Features, Robert Freeman, p. 219-220
Chapter 7: Oracle9i Real Application Clusters

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