Craig Ringer [https://community.jboss.org/people/ringerc] commented on the document "JBoss AS 7 - Datasource configuration for postgresql" To view all comments on this document, visit: https://community.jboss.org/docs/DOC-17064#comment-9848 -------------------------------------------------- Note that you may instead deploy the PostgreSQL JDBC driver as a module. That's the only way you'll be able to use a -ds.xml file to define a datasource, as far as I can tell anyway. Create the directory modules/org/postgresql/main and place postgresql-9.1-901-1.jdbc4.jar within it. Now create a module.xml file in the same place, with the content: <module xmlns="urn:jboss:module:1.1" name="org.postgresql">    <!-- Load with jboss-cli command:         /subsystem=datasources/jdbc-driver=postgresql-driver:add(driver-name=postgresql-driver, driver-class-name=org.postgresql.Driver, driver-module-name=org.postgresql)    -->    <resources>      <resource-root path="postgresql-9.1-901-1.jdbc4.jar"/>    </resources>    <dependencies>      <module name="javax.api"/>      <module name="javax.transaction.api"/>    </dependencies> </module> Activate it as "postgresql-driver" with     jboss-cli.sh --connect command="/subsystem=datasources/jdbc-driver=postgresql-driver:add(driver-name=postgresql-driver, driver-class-name=org.postgresql.Driver, driver-module-name=org.postgresql" You may now use this driver in -ds.xml files by specifying it as "postgresql-driver", eg: <?xml version="1.0" encoding="UTF-8"?> <datasources>   <datasource jndi-name="java:/datasources/some-ds" enabled="true" use-java-context="true"          pool-name="some-ds-pool">     <connection-url>jdbc:postgresql:somedb</connection-url>     <driver>postgresql-driver</driver>     <security>       <user-name>user</user-name>       <password>pass</password>     </security>   </datasource> </datasources> Unlike explicitly naming the jdbc jar in a data-source create command, you can now update PgJDBC without changing all your datasources. --------------------------------------------------