datasource.txt

Agregar este tag dentro del tag <datasources> del standalone.xml del servidor JBoss.

<datasource jta="false" jndi-name="java:/electiva6" pool-name="electiva6" enabled="true" use-java-context="true" use-ccm="false">
    <connection-url>jdbc:postgresql://localhost:5432/electiva</connection-url>
    <driver-class>org.postgresql.Driver</driver-class>
    <driver>postgresql</driver>
    <pool>
        <min-pool-size>2</min-pool-size>
        <max-pool-size>20</max-pool-size>
    </pool>
    <security>
        <user-name>postgres</user-name>
        <password>postgres</password>
    </security>
    <validation>
        <validate-on-match>false</validate-on-match>
        <background-validation>false</background-validation>
        <background-validation-millis>1</background-validation-millis>
    </validation>
    <statement>
        <prepared-statement-cache-size>0</prepared-statement-cache-size>
        <share-prepared-statements>false</share-prepared-statements>
    </statement>
</datasource>