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Oracle GlassFish Server Message Queue 4.5 Administration Guide |
Part I Introduction to Message Queue Administration
1. Administrative Tasks and Tools
3. Starting Brokers and Clients
6. Configuring and Managing Connection Services
8. Configuring Persistence Services
9. Configuring and Managing Security Services
10. Configuring and Managing Broker Clusters
11. Managing Administered Objects
12. Configuring and Managing Bridge Services
13. Monitoring Broker Operations
14. Analyzing and Tuning a Message Service
A Client Cannot Establish a Connection
A Client Cannot Create a Message Producer
Message Production Is Delayed or Slowed
Messages Are Not Reaching Consumers
Dead Message Queue Contains Messages
To Inspect the Dead Message Queue
17. Broker Properties Reference
18. Physical Destination Property Reference
19. Administered Object Attribute Reference
20. JMS Resource Adapter Property Reference
21. Metrics Information Reference
22. JES Monitoring Framework Reference
A. Distribution-Specific Locations of Message Queue Data
B. Stability of Message Queue Interfaces
Symptoms:
Message throughput does not meet expectations.
Message input/output rates are not limited by an insufficient number of supported connections (as described in A Client Cannot Establish a Connection).
Possible causes:
Possible cause: Network connection or WAN is too slow.
To confirm this cause of the problem:
Ping the network, to see how long it takes for the ping to return, and consult a network administrator.
Send and receive messages using local clients and compare the delivery time with that of remote clients (which use a network link).
To resolve the problem: Upgrade the network link.
Possible cause: Connection service protocol is inherently slow compared to TCP.
For example, SSL-based or HTTP-based protocols are slower than TCP (see Transport Protocols).
To confirm this cause of the problem: If you are using SSL-based or HTTP-based protocols, try using TCP and compare the delivery times.
To resolve the problem: Application requirements usually dictate the protocols being used, so there is little you can do other than attempt to tune the protocol as described in Tuning Transport Protocols.
Possible cause: Connection service protocol is not optimally tuned.
To confirm this cause of the problem: Try tuning the protocol to see whether it makes a difference.
To resolve the problem: Try tuning the protocol, as described in Tuning Transport Protocols.
Possible cause: Messages are so large that they consume too much bandwidth.
To confirm this cause of the problem: Try running your benchmark with smaller-sized messages.
To resolve the problem:
Have application developers modify the application to use the message compression feature, which is described in the Message Queue Developer’s Guide for Java Clients.
Use messages as notifications of data to be sent, but move the data using another protocol.
Possible cause: What appears to be slow connection throughput is actually a bottleneck in some other step of the message delivery process.
To confirm this cause of the problem: If what appears to be slow connection throughput cannot be explained by any of the causes above, see Factors Affecting Performance for other possible bottlenecks and check for symptoms associated with the following problems:
To resolve the problem: Follow the problem resolution guidelines provided in the troubleshooting sections listed above.