anchor.diff:  | `retries`  | How many retries should be performed before failing the test       | optional | `0`
   |===
   
  -NOTE: The _OPENNMS_JDBC_HOSTNAME_ is replaced in the _url_ parameter with the IP or resolved hostname of the interface the monitored service is assigned to. 
  +NOTE: The +OPENNMS_JDBC_HOSTNAME+ is replaced in the +url+ parameter with the IP or resolved hostname of the interface the monitored service is assigned to. 
   
   .Available _action_ parameters and their default _operand_
   [options="header, autowidth"]
  
positive.code: 
  === JDBCQueryMonitor
  
  The JDBCQueryMonitor runs an sql-query against a database and is able to verify the result of the query.
  A read-only connection is used to run the SQL query, so the data in the database is not altered.
  It is based on the http://www.oracle.com/technetwork/java/javase/jdbc/index.html[JDBC] technology to connect and communicate with the database.
  
  
negative.code:   <parameter key="message" value="too many events in OpenNMS database" />
  </service>
  
  <monitor service="OpenNMS-DB-Event-Limit" class-name="org.opennms.netmgt.poller.monitors.JDBCQueryMonitor" />
  ----
  