When processing appears sluggish or requests fail, use a focused
approach to determine the source of the problem in the environment. The
approach described is for non-standalone server environments.
Before you begin
You must be logged into the administrative console of the deployment
manager to perform this task.
Required security role for this task: When
security and role-based authorization are enabled, you must log in
to the administrative console as an administrator or operator to perform
this task.
About this task
Investigate the state of your deployment environment if you notice
any of the following symptoms:
- Unavailable applications
- Sluggish applications
- Stopped applications
- Decreased throughput
- Sluggish performance
Procedure
- Display the topology layout that describes this deployment environment
to determine the status of the topology.
- Display the topology to determine the state of the various roles
in the topology. Note the roles with unexpected states or warning for further
investigation.
- Locate the nodes that are causing the error state for each role.
- Make sure all nodes are synchronized.
On the Nodes page
in the administrative console select any unsynchronized nodes and click Synchronize.
- Make sure that the messaging engines associated with all the buses
are running.
If they are not running, stop and start the messaging
engines.
- Locate the logs associated with the nodes in error and view the
logs for error messages.
- Take any actions prescribed by the error messages to affect the
correction.
- Correct any errors and restart the affected nodes.
Results
The nodes previously in error start and the status of the topology
becomes
"running."
What to do next
Restart any affected applications