Missing IN or OUT parameter at index:: 1

Does anybody know why i am getting this error? It happens when i try to update mulitple records in a for loop. Thanks for any help.

Mon Jul 12 09:49:31 PDT 2004 [http8443-Processor25] [Debug] java.sql.SQLException: Missing IN or OUT parameter at index:: 1
      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
      at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
      at oracle.jdbc.driver.OracleStatement.checkBindsInAndOut(OracleStatement.java:1951)
      at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2792)
      at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:608)
      at com.sdn.database.DBConnection.updateTTYSource(DBConnection.java:2934)
      at com.sdn.server.Controller.doPost(Controller.java:264)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
      at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:509)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
      at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
      at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
      at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
      at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
      at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
      at java.lang.Thread.run(Thread.java:534)