A data source maintains a pool of available connections that EAServer components use to interact with third-tier data servers. You must configure data sources for the specific user and database combinations used by your components. A data source entry improves performance by eliminating the overhead associated with setting up a connection when one is required. Create as many data sources as you need.
If you define two data sources that use identical values for server, user, and password, and your application requests a connection using only these values, EAServer returns the first match that is found.
Table 4-2 describes the predefined data sources. Use the Management Console to modify the definitions of these data sources and create new data sources.
Data source name |
Description |
|---|---|
default |
The default data source, which is configured to connect to a Sybase_ASA database type. |
cluster.db |
Initially, the same configuration as the default data source; you may want to customize to use with a server cluster. |
JavaCache |
An alias for default. |
message.db |
Initially, the same configuration as the default data source; you may want to customize to use for the message service. |
session.db |
Initially, the same configuration as the default data source; you may want to customize to use for a session. |
tx_manager |
Initially, the same configuration as the default data source; you may want to customize for the transaction manager. |
In the Management Console, open the Resources folder.
Highlight Data Sources, right-click and select Add.
Enter the data source name in the wizard.
Data source names are limited to one word, which can contain letters, numbers, and underscores. Names are case-sensitive.
Data source entries appear on the right side of the window in the Management Console when you highlight the Data Sources folder on the left side of the window.
You must refresh a data source before any changes to
the data source properties take effect, and you should test the
connection with ping before trying to access
it from components.
Expand the Data Sources folder.
Highlight the data source to delete, right-click, and select Delete.
In the wizard, select Finish.
You cannot modify the name of an existing data source.
Expand the Data Sources folder.
Select the data source to configure.
In the right pane, enter the data source properties on these configuration tabs:
To save your changes, select Apply; to restore the initial values, select Reset.
Creating a
new data source