In order to access useful information about the database tier,
you must first configure WebSphere Extended Deployment for performance monitoring.
With database tier performance monitoring, you can view central processing
unit utilization, average response time, and throughput. The information provided
in performance monitoring is valuable for detecting and preventing bottlenecks.
About this task
After you have installed either a DB2 or Oracle database on the node
and installed WebSphere Extended Deployment with an augmented profile, you
can then configure the database tier for performance monitoring. Monitoring
the database tier provides the information needed to prevent the system from
experiencing slower response time due to bottlenecks.
Procedure
- Create a database server in the WebSphere Application Server configuration.
- Create a new generic server and give it a name, for example DB2Instance1.
Select the database node from the list.
- Click Generic Servers >DB2Instance1.
- Under Additional Properties, click Process Definition
> Java Virtual Machine > Custom Properties.
- Add the following entries:
GENERIC_SERVER_TYPE = DBSERVER
GENERIC_SERVER_SUB_TYPE = DB2 (for DB2) or ORACLE (for Oracle)
INSTANCE_NAME = name of database instance (DB2) or SID (Oracle)
- Configure data sources for Java Database Connectivity (JDBC) monitoring:
- Click Resources > JMS Providers > JDBC Providers >Database_server_name>
Data sources > Data_source_name > Customer properties.
Add
the property: dbServerName = generic server name, for
example, DB2Instance1.
- Follow these steps, depending on the database type and Java
database connectivity (JDBC) driver type you use:
- For type 2 DB2 data sources. If the database name on the server is different
from the database alias name used on the local DB2 client, take these actions.
For the Database name field on the Datasource Configuration panel,
specify the alias name. Under Additional Properties, click Custom
Property. Add a remote Database Name custom property, using database name
as the value on the database server.
- For Oracle data sources: If the database name does not display in the
connection URL, under Additional Properties, click Custom Property.
Set the value of the database name property to the name of the Oracle database.
- Enable performance monitoring infrastructure (PMI) for JDBC statistics
collection:
- Click Monitoring and Tuning > Performance Monitoring Infrastructure
(PMI)
This action displays a list of servers in the
cell.
- For every server in the list that has a data source:
- Click the server name.
- In the Configuration panel, select the Enable Performance Monitoring
Infrastructure (PMI) check box. Set the Currently monitored statistic
set to Extended or All. However, if the
currently monitored statistic set is set to Custom, and for
improved performance, enable the JDBC counters in the Custom Level.
Results
Your system is now ready for extended monitoring of WebSphere Extended
Deployment components, including JDBC. You can view your database from the
runtime topology.