<datasource jndi-name="java:/VMANAGER_DS" pool-name="VMANAGER_DS" enabled="true" use-java-context="true">
                    <connection-url>jdbc:postgresql://localhost:5432/vmanager</connection-url>
                    <driver>org.postgresql</driver>
                    <pool>
                        <min-pool-size>10</min-pool-size>
                        <max-pool-size>100</max-pool-size>
                        <prefill>true</prefill>
                        <use-strict-min>false</use-strict-min>
                        <flush-strategy>FailingConnectionOnly</flush-strategy>
                    </pool>
                    <security>
                        <user-name>postgres</user-name>
                        <password>1234</password>
                    </security>
                </datasource>