The installation of WebSphere Application Server did not complete successfully, and a system administrator needs to troubleshoot the installation.
What can the administrator do to identify the cause of the installation failure?
Installation Manager creates log files that you can use to troubleshoot any installation problems. Consider verifying the log files after any installation to ensure that everything in that process went successfully.
To examine the logs manually, locate the Installation Manager logs directory. The default location for this directory varies according to the operating system:
Windows: C:\ProgramData\IBM\Installation Manager\logs
UNIX: /var/ibm/InstallationManager/logs
References:
A system administrator has created a cluster containing two servers in a same node. The administrator did not select the option Generate unique HTTP ports during the creation of the cluster members. After the cluster creation, the administrator changed the HTTP port of the second cluster member to 9081.
Testing the servers using the snoop servlet directly to the server's HTTP port, the administrator got the following error message for the second server:
How can the administrator fix this problem?
Problem(Abstract)
SRVE0255E: A WebGroup/Virtual Host to handle /p2pd/servlet/dispatch has not been defined.
Symptom
Unable to start IBM Cognos Business Intelligence
Cause
The virtual host does not contain IBM WebSphere Port that the Application server is listening on. This may be one of several reasons.
References: http://www-01.ibm.com/support/docview.wss?uid=swg21438842
While monitoring a cluster in the cell, the administrator notices that one server in the cluster periodically loses connections to the database. When this happens, requests to the server have a significantly decreased response time and various error conditions are listed in the log files for the server. Since the error codes are returned quickly, the server starts returning responses faster than the average service times for the application. Due to this, the weight for the server is increased and a large percentage of incoming requests are being routed to the erroneous server and the server is getting overloaded with requests.
How can the administrator detect these conditions in the future and take action to prevent this problem?
Storm drain condition tracks requests that have a significantly decreased response time. This policy relies on change point detection on given time series data.
A developer created an enterprise application which contained data source and security role information. The developer asked a system administrator to install this application to an application server where global security is enabled using the Integrated Solutions Console (ISC). A new data source was configured at the server scope for the use of this application. While load testing the application, the developer noticed that the attributes configured on the new data source were ignored by the application server.
How can the administrator ensure that the attributes configured on the new data source are used by the application server?
Process embedded configuration
Specifies whether the embedded configuration should be processed. An embedded configuration consists of files such as resource.xml, variables.xml, and deployment.xml. You can collect WebSphere Application Server-specific deployment information and store it in the application EAR file. Such an EAR file can then be installed into a WebSphere Application Server configuration, using application management interfaces that are described in the topic, Installing an application through programming.
One such application EAR file is an enhanced EAR file, which is created when you export an already installed application. The embedded configuration check box identifies such an enhanced EAR file. By default, the check box for 'process embedded configuration' is checked if the application is detected to be an enhanced EAR. The application install options are prepopulated with the information from the embedded configuration whether the check box for 'process embedded configuration' is checked or not. Users can overwrite these values during the deployment process.
A system administrator ran the backupConfig command to backup the configuration using the --nostop option. The administrator changed the properties for the service integration environment by modifying the sib.properties file. During testing the administrator noticed Service Integration Bus related errors and wanted to restore the service integration environment. The administrator used the restoreConfig command, but the tuning properties for the service integration environment were not restore.
How can the administrator prevent this issue?
With the repository checkpoint and restore function, you can back up copies of files from the master configuration repository. You can use the backups to restore the configuration to a previous state if future configuration changes cause operational problems. By using this function, you can reduce recovery time for problems that are caused by configuration changes. Studies of unplanned outages have shown that as much as 36 percent of unplanned outages are due to operator errors. A common source of operator error is a bad configuration change. The ability to quickly undo a bad configuration change is critical to minimizing the outage window.
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