Jdbc Resources - Sun Microsystems GlassFish Enterprise Server 2.1 Administration Manual

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C H A P T E R

JDBC Resources

This chapter explains how to configure JDBC resources, which are required by applications that
access databases. This chapter contains the following sections:
"JDBC Resources" on page 43
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"JDBC Connection Pools" on page 44
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"How JDBC Resources and Connection Pools Work Together" on page 44
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"Setting Up Database Access" on page 45
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"Working with JDBC Connection Pools" on page 46
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"Configurations for Specific JDBC Drivers" on page 52
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JDBC Resources
To store, organize, and retrieve data, most applications use relational databases. Java EE
applications access relational databases through the JDBC API.
A JDBC resource (data source) provides applications with a means of connecting to a database.
Typically, the administrator creates a JDBC resource for each database accessed by the
applications deployed in a domain. (However, more than one JDBC resource can be created for
a database.)
To create a JDBC resource, specify a unique JNDI name that identifies the resource. (See the
section JNDI Names and Resources.) Expect to find the JNDI name of a JDBC resource in
java:comp/env/jdbc subcontext. For example, the JNDI name for the resource of a payroll
database could be java:comp/env/jdbc/payrolldb. Because all resource JNDI names are in
the java:comp/env subcontext, when specifying the JNDI name of a JDBC resource in the
Admin Console, enter only jdbc/name. For example, for a payroll database specify
jdbc/payrolldb.
A JDBC resource (data source) provides applications with a means of connecting to a database.
Before creating a JDBC resource, first create a JDBC connection pool.
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