Re: Fail to run Tutorial Adding Persistence With JDBC (Java Web SDK)

Hi Xu,

Sorry for being late to reply you.

Here are my application log files:

2016 04 20 02:05:58#+00#ERROR#com.sap.cloud.sample.persistance.PersistanceWithJDBCServlet##anonymous#http-bio-8041-exec-7#na#i321727trial#jdbc#web#i321727trial#Persistance operation failed

org.apache.commons.dbcp.SQLNestedException: Borrow prepareStatement from pool failed

  at org.apache.commons.dbcp.PoolingConnection.prepareStatement(PoolingConnection.java:113)

  at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:281)

  at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:313)

  at com.sap.cloud.sample.persistance.PersonDAO.selectInfo(PersonDAO.java:107)

  at com.sap.cloud.sample.persistance.PersistanceWithJDBCServlet.getInfo(PersistanceWithJDBCServlet.java:107)

  at com.sap.cloud.sample.persistance.PersistanceWithJDBCServlet.doGet(PersistanceWithJDBCServlet.java:64)

  at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)

  at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)

  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

  at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

  at com.sap.core.communication.server.CertValidatorFilter.doFilter(CertValidatorFilter.java:324)

  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)

  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)

  at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)

  at com.sap.core.jpaas.security.auth.service.lib.AbstractAuthenticator.invoke(AbstractAuthenticator.java:205)

  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)

  at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)

  at com.sap.core.tenant.valve.TenantValidationValve.invokeNextValve(TenantValidationValve.java:168)

  at com.sap.core.tenant.valve.TenantValidationValve.invoke(TenantValidationValve.java:92)

  at com.sap.js.statistics.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:24)

  at com.sap.core.js.monitoring.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:25)

  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)

  at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)

  at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)

  at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)

  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

  at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

  at java.lang.Thread.run(Thread.java:812)

Caused by: com.sap.dbtech.jdbc.exceptions.jdbc40.SQLSyntaxErrorException: [-4005] (at 8): Unknown column name:ID

  at com.sap.dbtech.jdbc.exceptions.jdbc40.SQLSyntaxErrorException.createException(SQLSyntaxErrorException.java:53)

  at com.sap.dbtech.jdbc.exceptions.SQLExceptionSapDB.createException(SQLExceptionSapDB.java:251)

  at com.sap.dbtech.jdbc.exceptions.SQLExceptionSapDB.generateDatabaseException(SQLExceptionSapDB.java:138)

  at com.sap.dbtech.jdbc.packet.ReplyPacket.createException(ReplyPacket.java:69)

  at com.sap.dbtech.jdbc.ConnectionSapDB.throwSQLError(ConnectionSapDB.java:1096)

  at com.sap.dbtech.jdbc.ConnectionSapDB.execute(ConnectionSapDB.java:720)

  at com.sap.dbtech.jdbc.CallableStatementSapDB.sendCommand(CallableStatementSapDB.java:1840)

  at com.sap.dbtech.jdbc.StatementSapDB.sendSQL(StatementSapDB.java:932)

  at com.sap.dbtech.jdbc.CallableStatementSapDB.doParse(CallableStatementSapDB.java:234)

  at com.sap.dbtech.jdbc.CallableStatementSapDB.constructor(CallableStatementSapDB.java:187)

  at com.sap.dbtech.jdbc.CallableStatementSapDB.<init>(CallableStatementSapDB.java:99)

  at com.sap.dbtech.jdbc.CallableStatementSapDBFinalize.<init>(CallableStatementSapDBFinalize.java:11)

  at com.sap.dbtech.jdbc.ConnectionSapDB.prepareStatement(ConnectionSapDB.java:976)

  at com.sap.dbtech.jdbc.trace.Connection.prepareStatement(Connection.java:413)

  at sun.reflect.GeneratedMethodAccessor76.invoke(Unknown Source)

  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

  at java.lang.reflect.Method.invoke(Method.java:606)

  at com.sap.core.persistence.jdbc.trace.TraceableBase$1.invoke(TraceableBase.java:44)

  at com.sun.proxy.$Proxy6.prepareStatement(Unknown Source)

  at com.sap.core.persistence.jdbc.trace.TraceableConnection.prepareStatement(TraceableConnection.java:121)

  at org.apache.commons.dbcp.PoolingConnection.makeObject(PoolingConnection.java:285)

  at org.apache.commons.pool.impl.GenericKeyedObjectPool.borrowObject(GenericKeyedObjectPool.java:1216)

  at org.apache.commons.dbcp.PoolingConnection.prepareStatement(PoolingConnection.java:107)

  ... 35 more

Honestly speaking, I still feel confused about this log files. So may the SQL statements be the problem?

BR,

Jelly