If the Rejected Connections metric is displayed, check if the number of connected clients exceeds the maximum allowed number of connections of the instances.
- To check the maximum allowed number of connections, go to the Parameters tab page of the instance and check the value of the maxclients parameter. (Proxy Cluster instances do not have this parameter. You can view the maximum number of connections on the instance creation page.)
- To check the current number of connections, go to the Performance Monitoring tab page of the instance and check the Connected Clients metric.
If the current number of connections reaches the upper limit, you can adjust the value of maxclients. If the value of maxclients can no longer be increased, increase the instance specifications.