HP Integrity NonStop H-Series - Manual (Page 62)

9. What happens if a broker is removed from a cluster?
If a broker is removed, some messages may not be dispatched and these may be lost. The
other brokers, producers, consumers, lose communication with the removed broker.
10. I am having problems sending messages to clients in another time zone.
Time zone between the client and the server must be in sync for proper message delivery. If
there is no synchronization in time zone between client and server, you may face problems
with message delivery.
11. Can I add/remove network connectors from JMX?
It is not supported. Adding/removing network connectors from JMX may disrupt the cluster.
12. The following 'thaw' error displays when I start the cluster for the first time. What should I do?
$Y03C: PATHCOM - T0845H09 - (01JUL12)
(C)2008-2012 Hewlett Packard Development Company, L.P.
=THAW SERVER r1-M
THAW SERVER R1-M
^
$Y03C: ERROR - *1060* SERVER R1-M, NOT FROZEN
$Y03F: PATHCOM - T0845H09 - (01JUL12)
(C)2008-2012 Hewlett Packard Development Company, L.P.
=START SERVER r1-M
$Y03F: SERVER R1-M, STARTED
=EXIT
$Y03J: PATHCOM - T0845H09 - (01JUL12)
(C)2008-2012 Hewlett Packard Development Company, L.P.
=THAW SERVER r2-M
THAW SERVER R2-M
^
$Y03J: ERROR - *1060* SERVER R2-M, NOT FROZEN
$Y03L: PATHCOM - T0845H09 - (01JUL12)
(C)2008-2012 Hewlett Packard Development Company, L.P.
=START SERVER r2-M
$Y03L: SERVER R2-M, STARTED
=EXIT
You may get this error when starting the cluster for the first time as the script first thaws the
server class. You can ignore this error and continue.
13. Can I use plugins in ActiveMQ configuration?
Authentication and Authorization plugins are supported. Enabling other plugins in ActiveMQ
configuration may disrupt the message delivery to the consumers and may impact performance.
See the individual documentations of the plugins before enabling.
14. How many brokers can I configure within a CPU?
You can configure multiple brokers in a CPU. However, HP recommends you to run brokers
on different CPUs for better performance results. If the TCP process is configured for TCP6SAM,
only one broker must be configured per CPU in a cluster.
15. I am getting the following JMS Exception:
javax.jms.JMSException: Wire format negociation timeout: peer did not send his wire format.
at org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:58)
at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1185)
at org.apache.activemq.ActiveMQConnection.ensureConnectionInfoSent(ActiveMQConnection.java:1263)
at org.apache.activemq.ActiveMQConnection.start(ActiveMQConnection.java:449)
The above exception can mean one of the following:
a.
You are connecting to the port not used by NSMQ TCP transport
Check and ensure that you are connecting to the appropriate
b. Network connection may be unreliable or the broker may be under heavy load, hence
connection takes a long time
Try to use the failover transport protocol, so that clients can try to reconnect if the first
attempt fails. You may also try extending the wire format negotiation period to allow
62 FAQ/Common problems and error conditions