请教sybase驱动的问题，高手请进。

把result放入CachedRowSet，数据库为sybase 12,驱动为jconn3.jar,version为6.0，其实也用过jconn2.jar,version有5.2，5.5,都用过，问题一样。
在如下操作的时候
CachedRowSet cachedRowSet = new CachedRowSet();
cachedRowSet.populate(sqlstate.executeQuery());
出现的异常为：
ERROR [SearchControlServlet] 执行查询出错::尚未完成方法 com.sybase.jdbc2.tds.RowFormatToken.getSchemaName，不应调用它。
INFO  [STDOUT] com.sybase.jdbc2.utils.UnimplementedOperationException: 尚未完成方法 com.sybase.jdbc2.tds.RowFormatToken.getSchemaName，不应调用它。
INFO  [STDOUT]     at com.sybase.jdbc2.jdbc.ErrorMessage.raiseRuntimeException(ErrorMessage.java:663)
INFO  [STDOUT]     at com.sybase.jdbc2.utils.Debug.notImplemented(Debug.java:387)
INFO  [STDOUT]     at com.sybase.jdbc2.tds.RowFormatToken.getSchemaName(RowFormatToken.java:498)
INFO  [STDOUT]     at sun.jdbc.rowset.CachedRowSet.initMetaData(CachedRowSet.java:680)
INFO  [STDOUT]     at sun.jdbc.rowset.CachedRowSet.populate(CachedRowSet.java:647)
INFO  [STDOUT]     at com.tzit.common.servlet.SearchControlServlet.executeSearch(SearchControlServlet.java:98)
INFO  [STDOUT]     at com.tzit.common.servlet.SearchControlServlet.doPost(SearchControlServlet.java:49)
INFO  [STDOUT]     at com.tzit.common.servlet.SearchControlServlet.doGet(SearchControlServlet.java:31)
INFO  [STDOUT]     at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
INFO  [STDOUT]     at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
INFO  [STDOUT]     at com.tzit.retailnet.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
INFO  [STDOUT]     at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
INFO  [STDOUT]     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
INFO  [STDOUT]     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
INFO  [STDOUT]     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
INFO  [STDOUT]     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
INFO  [STDOUT]     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
INFO  [STDOUT]     at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
INFO  [STDOUT]     at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
INFO  [STDOUT]     at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
INFO  [STDOUT]     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
INFO  [STDOUT]     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
INFO  [STDOUT]     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
INFO  [STDOUT]     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
INFO  [STDOUT]     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
INFO  [STDOUT]     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
INFO  [STDOUT]     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
INFO  [STDOUT]     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
INFO  [STDOUT]     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
INFO  [STDOUT]     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
INFO  [STDOUT]     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
INFO  [STDOUT]     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
INFO  [STDOUT]     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
INFO  [STDOUT]     at java.lang.Thread.run(Thread.java:534)