Hi,
I have developed an application using the jdbc driver and connecting to a postgresql database . The application mainly does the following two things： ① read data from the CSV file and insert it into the database ② perform a database query In my application, the above ① and ② are executed asynchronously. Everything was working fine until I increase the amount of CSV data to more than 1000. Randomly they receive an error, the stack trace of which is below. com.nec.neosarf.exception.NeoSarfException: org.postgresql.util.PSQLException: An I/O error occured while sending to the backend at com.nec.neosarf.services.core.controller.DutiesDao.DutiesDaoError(DutiesDao.java:2037) at com.nec.neosarf.services.core.controller.DutiesDao.SelectData(DutiesDao.java:459) at com.nec.neosarf.services.core.controller.DutiesDao.SelectData(DutiesDao.java:335) at com.nec.neosarf.services.core.controller.CoreConductor.ConductorLv3_DataAccess(CoreConductor.java:2062) at com.nec.neosarf.services.core.controller.CoreConductor.ConductorCore(CoreConductor.java:794) at com.nec.neosarf.services.core.controller.CoreConductor.ConductorRun(CoreConductor.java:623) at com.nec.neosarf.services.core.controller.CoreConductor.Conductor(CoreConductor.java:356) at com.nec.neosarf.services.core.controller.CoreBody.ConductorCreation(CoreBody.java:4817) at com.nec.neosarf.services.core.controller.CoreBody.ActionDirectorInteface(CoreBody.java:2783) at com.nec.neosarf.services.core.controller.CoreBody.AjaxCheck(CoreBody.java:2465) at com.nec.neosarf.services.core.controller.CoreBody.ExecutionPageRun(CoreBody.java:1693) at com.nec.neosarf.services.core.servlet.NeoSarf.coreServlet(NeoSarf.java:386) at com.nec.neosarf.services.core.servlet.NeoSarf.service(NeoSarf.java:139) at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:353) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) at com.nec.neosarf.services.core.filter.dynamic.NeoSarfFilterChain.doFilter(NeoSarfFilterChain.java:36) at com.nec.neosarf.services.debugger.filter.DebugSynchronizedFilter.doFilter(DebugSynchronizedFilter.java:72) at com.nec.neosarf.services.core.filter.dynamic.NeoSarfFilterChain.doFilter(NeoSarfFilterChain.java:34) at com.nec.neosarf.services.core.filter.dynamic.DynamicRequestFilter.executeServlet(DynamicRequestFilter.java:93) at com.nec.neosarf.services.core.filter.RequestFilter.doFilter(RequestFilter.java:450) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:359) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:889) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1735) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:829) Caused by: org.postgresql.util.PSQLException: An I/O error occured while sending to the backend at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:382) at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:490) at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:408) at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:167) at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:119) at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:121) at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:121) at com.nec.neosarf.db.DaoBase.selectReal(DaoBase.java:393) at com.nec.neosarf.db.DaoBase.selectDuties(DaoBase.java:328) at com.nec.neosarf.services.core.controller.DutiesDao.SelectData(DutiesDao.java:372) ... 42 more Caused by: java.net.SocketTimeoutException: Read timed out at java.base/java.net.SocketInputStream.socketRead0(Native Method) at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115) at java.base/java.net.SocketInputStream.read(SocketInputStream.java:168) at java.base/java.net.SocketInputStream.read(SocketInputStream.java:140) at java.base/sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:478) at java.base/sun.security.ssl.SSLSocketInputRecord.readHeader(SSLSocketInputRecord.java:472) at java.base/sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:70) at java.base/sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1454) at java.base/sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:1065) at org.postgresql.core.VisibleBufferedInputStream.readMore(VisibleBufferedInputStream.java:161) at org.postgresql.core.VisibleBufferedInputStream.ensureBytes(VisibleBufferedInputStream.java:128) at org.postgresql.core.VisibleBufferedInputStream.ensureBytes(VisibleBufferedInputStream.java:113) at org.postgresql.core.VisibleBufferedInputStream.read(VisibleBufferedInputStream.java:73) at org.postgresql.core.PGStream.receiveChar(PGStream.java:453) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2119) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:355) ... 51 more Thanks for any help.
