Check whether the following problems occur on the DDS database. Check the following one at a time.
Solution: Use the Cloud Eye resource monitoring function to check whether the number of current connections and the CPU usage are normal. If the number of connections or CPU usage reaches the maximum, restart the DDS database, disconnect DB instances, or increase the node quantity.
Solution: Restart the DB instance to see if the problem is resolved. If the problem persists, contact post-sales technical support.