<local-tx-datasource>
<jndi-name>Name1</jndi-name>
<connection-url>jdbc:mysql://Host1:Port1/catissuecore</connection-url>
<user-name>user1</user-name>
<password>pwd1</password>
<driver-class>org.gjt.mm.mysql.Driver</driver-class>
<check-valid-connection-sql>select 1</check-valid-connection-sql>
</local-tx-datasource>
<local-tx-datasource>
<jndi-name>Name2</jndi-name>
<connection-url>jdbc:mysql://Host2:Port2/catissuecore</connection-url>
<user-name>user2</user-name>
<password>pwd2</password>
<driver-class>org.gjt.mm.mysql.Driver</driver-class>
<check-valid-connection-sql>select 1</check-valid-connection-sql>
</local-tx-datasource>
Above is the datasource file which you can use for your purpose. The users should have appropriate privileges and access.