title: wso 2 API manager: how to configure multiple user store
body: <p>I follow the guide: <a href="http://docs.wso2.org/wiki/display/AM140/Multiple+User+Stores" rel="nofollow">http://docs.wso2.org/wiki/display/AM140/Multiple+User+Stores</a>
  and add new UserStoreManager,but it issue exception and can not work</p>
  
  <pre><code>[2013-08-07 23:59:33,668] INFO - AgentHolder Agent created !
     [2013-08-07 23:59:33,715] INFO - AgentDS Successfully deployed Agent
     Client [2013-08-07 23:59:37,910] ERROR - DatabaseUtil Table "UM_ROLE"
     not found; SQL statement: SELECT UM_ID FROM UM_ROLE WHERE
     UM_ROLE_NAME=? AND UM_TENANT_ID=? [42102-140]
     org.h2.jdbc.JdbcSQLException: Table "UM_ROLE" not found; SQL
     statement: SELECT UM_ID FROM UM_ROLE WHERE UM_ROLE_NAME=? AND
     UM_TENANT_ID=? [42102-140] at
     org.h2.message.DbException.getJdbcSQLException(DbException.java:327)
     at org.h2.message.DbException.get(DbException.java:167) at
     org.h2.message.DbException.get(DbException.java:144) ...
  </code></pre>
  
  <p>========================================================================</p>
  
  <p>Anybody know how to correct configure it?</p>