at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)

        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)

        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)

        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)

        at com.mysql.jdbc.Connection.execSQL(Connection.java:3283)

        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1332)

        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1604)

        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1519)

        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1504)

        at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102)

        at com.unidocs.database.LoggableStatement.executeUpdate(LoggableStatement.java:368)

        at com.unidocs.action.drm.DrmAction.doInsertPdfSend(DrmAction.java:1452)

        at com.unidocs.servlet.EncPdfDownloadServlet.service(EncPdfDownloadServlet.java:202)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)

        at com.unidocs.commonlib.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:136)

        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)

        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)

        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)

        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)

        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)

        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)

        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)

        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)

        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)

        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)

        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)

        at java.lang.Thread.run(Thread.java:534)