java - Unable to fill pool: when starting jboss application -

my project jboss project based on spring mvc. when run app following error:

unable fill pool

datasource configuration

<!-- jndi setup -->     <bean id="datasource" class="org.springframework.jndi.jndiobjectfactorybean">         <property name="jndiname">             <value>java:jboss/datasources/ssdiaryds</value>         </property>     </bean> 

mysql mapping in jboss standalone.xml

 <datasource jndi-name="java:jboss/datasources/ssdiaryds" pool-name="ssdiarydspool">                     <connection-url>jdbc:mysql://localhost:3306/schooldairy</connection-url>                     <driver>com.mysql</driver>                     <transaction-isolation>transaction_read_committed</transaction-isolation>                     <pool>                         <min-pool-size>10</min-pool-size>                         <max-pool-size>100</max-pool-size>                         <prefill>true</prefill>                     </pool>                     <security>                         <user-name>root</user-name>                         <password>password</password>                     </security>                     <statement>                         <prepared-statement-cache-size>32</prepared-statement-cache-size>                         <share-prepared-statements>true</share-prepared-statements>                     </statement>                 </datasource>