java.sql.SQLException: Unable to get a physical connection from the database...there are no connections available.

Oracle Community | Grjozs | 4 years ago
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    Oracle Community | 4 years ago | Grjozs
    java.sql.SQLException: Unable to get a physical connection from the database...there are no connections available.
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    java.sql.SQLException: No value specified for parameter 1解决办法_IT知识问答_希赛网

    educity.cn | 2 years ago
    java.sql.SQLException: No value specified for parameter 1 代码如下 public boolean login(UserInfo user)throws Exception{ //用户登录 boolean flag=false; int userNo=Integer.parseInt(user.getUserNo()); String password=user.getPassword(); //测试是否从现在的user对象中取到了值 System.out.println(userNo+"我是USER对象的userNo"); System.out.println(password+"我是USER对象的password"); DatabaseConnection dbc=new DatabaseConnection();//取得数据库连接和关闭对象; try{ String sql="SELECT userNo FROM userInfo where userNo= and password= "; this.conn=dbc.getConnection(); this.pst=conn.prepareStatement(sql); //this.pst.setInt(1, userNo);//给sql中参数赋值 this.pst.setLong(1, userNo); this.pst.setString(2, password); ResultSet rs=pst.executeQuery(); if(rs.next()){//传入用户账号和对应的密码都存在时为真 flag=true; System.out.println(rs.getString(userNo)+"我是从数据库里取出来的"); System.out.print(flag+"测试flag");//测试flag,看是否进入了if里面,true则进入了 rs.close(); } }catch(Exception e){ e.printStackTrace(); }finally{ if(this.pst!=null){ this.pst.close(); } this.conn.close(); } return flag; } 报的错误信息如:
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  5. 0

    java.sql.SQLException: No suitable driver - Toolbox for IT Groups

    ittoolbox.com | 8 months ago
    java.sql.SQLException: No suitable driver at java.sql.DriverManager.getConnection(DriverManager .java:545) at java.sql.DriverManager.getConnection(DriverManager .java:171) at com.stc.sql.framework.jdbc.DBConnectionFactory.cre ateConnection(DBConnectionFactory.java:372) at com.stc.sql.framework.jdbc.DBConnectionFactory.get Connection(DBConnectionFactory.java:281) at com.stc.etl.engine.impl.SimpleTask.getConnection(S impleTask.java:254) at com.stc.etl.engine.impl.Extractor.getSelectData(Ex tractor.java:376) at com.stc.etl.engine.impl.Extractor.process(Extracto r.java:190) at com.stc.etl.engine.impl.ETLTaskThread.run(ETLTaskT hread.java:147)
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    1 more error - Java Programming Help - KnowCoding.com

    knowcoding.com | 2 years ago
    java.sql.SQLException: Protocol violation at oracle.jdbc.dbaccess.DBError.throwSqlException(DBE rror.java:134) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBE rror.java:179) at oracle.jdbc.dbaccess.DBError.check_error(DBError.j ava:1160) at oracle.jdbc.ttc7.Ocommoncall.receive(Ocommoncall.j ava:149) at oracle.jdbc.ttc7.TTC7Protocol.rollback(TTC7Protoco l.java:488) at oracle.jdbc.driver.OracleConnection.rollback(Oracl eConnection.java:1412) at net.sf.hibernate.transaction.JDBCTransaction.rollb ack(JDBCTransaction.java:86) at com.azure.spark.database.hibernate.util.HibernateU til.doSessionWork(HibernateUtil.java:90) at com.azure.spark.database.hibernate.util.HibernateU til.doSessionWork(HibernateUtil.java:59) at com.azure.spark.database.hibernate.util.HibernateU til.get(HibernateUtil.java:569) at com.azure.spark.database.hibernate.util.HibernateS ession.get(HibernateSession.java:340) at com.azure.spark.taskcontroller.TaskControllerCompo nent.taskCompleted(TaskControllerComponent.java:11 54) at com.azure.spark.taskcontroller.TaskControllerCompo nent.onTaskEvent(TaskControllerComponent.java:1111 ) at com.azure.spark.taskcontroller.tasks.AbstractTaskC omponent.run(AbstractTaskComponent.java:354)

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    Root Cause Analysis

    1. java.sql.SQLException

      Unable to get a physical connection from the database...there are no connections available.

      at oracle.oc4j.sql.spi.ManagedConnectionImpl$GenericConnectionUseStrategy.initForUse()
    2. oracle.oc4j.sql
      ManagedConnectionFactoryImpl.createManagedConnection
      1. oracle.oc4j.sql.spi.ManagedConnectionImpl$GenericConnectionUseStrategy.initForUse(ManagedConnectionImpl.java:1188)
      2. oracle.oc4j.sql.spi.ManagedConnectionImpl$OracleConnectionUseStrategy.initForUse(ManagedConnectionImpl.java:1233)
      3. oracle.oc4j.sql.spi.ManagedConnectionImpl.initForUse(ManagedConnectionImpl.java:156)
      4. oracle.oc4j.sql.spi.ManagedConnectionImpl.<init>(ManagedConnectionImpl.java:106)
      5. oracle.oc4j.sql.spi.ManagedConnectionFactoryImpl.createManagedConnection(ManagedConnectionFactoryImpl.java:171)
      5 frames
    3. com.evermind.server
      ApplicationConnectionManager.createManagedConnection
      1. com.evermind.server.connector.ApplicationConnectionManager.createManagedConnection(ApplicationConnectionManager.java:1461)
      1 frame
    4. oracle.j2ee.connector
      ConnectionPoolImpl.getManagedConnection
      1. oracle.j2ee.connector.ConnectionPoolImpl.createManagedConnectionFromFactory(ConnectionPoolImpl.java:329)
      2. oracle.j2ee.connector.ConnectionPoolImpl.access$900(ConnectionPoolImpl.java:100)
      3. oracle.j2ee.connector.ConnectionPoolImpl$NonePoolingScheme.getManagedConnection(ConnectionPoolImpl.java:1233)
      4. oracle.j2ee.connector.ConnectionPoolImpl.getManagedConnection(ConnectionPoolImpl.java:792)
      4 frames
    5. oracle.oc4j.sql
      ConnectionPoolImpl.getManagedConnection
      1. oracle.oc4j.sql.ConnectionPoolImpl.getManagedConnection(ConnectionPoolImpl.java:45)
      1 frame
    6. com.evermind.server
      ApplicationConnectionManager.allocateConnection
      1. com.evermind.server.connector.ApplicationConnectionManager.getConnectionFromPool(ApplicationConnectionManager.java:1700)
      2. com.evermind.server.connector.ApplicationConnectionManager.acquireConnectionContext(ApplicationConnectionManager.java:1640)
      3. com.evermind.server.connector.ApplicationConnectionManager.allocateConnection(ApplicationConnectionManager.java:1580)
      3 frames
    7. oracle.j2ee.connector
      OracleConnectionManager.allocateConnection
      1. oracle.j2ee.connector.OracleConnectionManager.unprivileged_allocateConnection(OracleConnectionManager.java:265)
      2. oracle.j2ee.connector.OracleConnectionManager.allocateConnection(OracleConnectionManager.java:214)
      2 frames
    8. oracle.oc4j.sql
      ManagedDataSource.getConnection
      1. oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:272)
      2. oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:200)
      3. oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:142)
      4. oracle.oc4j.sql.ManagedDataSource.getConnection(ManagedDataSource.java:127)
      4 frames
    9. lv.dati.eks
      LogManagerBean.log
      1. lv.dati.eks.helpers.PersistenceHelper.getConnection(PersistenceHelper.java:62)
      2. lv.dati.eks.logging.LogImpl.writeLog(LogImpl.java:371)
      3. lv.dati.eks.logging.LogManagerBean.log(LogManagerBean.java:29)
      3 frames
    10. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      3. java.lang.reflect.Method.invoke(Method.java:585)
      3 frames
    11. com.evermind.server
      StatelessSessionEJBObject.OC4J_invokeMethod
      1. com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
      2. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      3. com.evermind.server.ejb.interceptor.system.SetContextActionInterceptor.invoke(SetContextActionInterceptor.java:44)
      4. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      5. com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
      6. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      7. com.evermind.server.ejb.interceptor.system.TxNotSupportedInterceptor.invoke(TxNotSupportedInterceptor.java:43)
      8. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      9. com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
      10. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      11. com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
      12. com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
      12 frames
    12. Unknown
      LogManager_LocalProxy_3ldln8.log
      1. LogManager_LocalProxy_3ldln8.log(Unknown Source)
      1 frame
    13. lv.dati.eks
      WSManagerCmisBean.submitRequest
      1. lv.dati.eks.logging.LogImpl.ejbLog(LogImpl.java:173)
      2. lv.dati.eks.logging.LogImpl.log(LogImpl.java:158)
      3. lv.dati.eks.logging.LogImpl.error(LogImpl.java:309)
      4. lv.dati.eks.services.ws.WSManagerCmisBean.logCmiswsEx(WSManagerCmisBean.java:666)
      5. lv.dati.eks.services.ws.WSManagerCmisBean.submitRequest(WSManagerCmisBean.java:266)
      5 frames
    14. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor419.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      3. java.lang.reflect.Method.invoke(Method.java:585)
      3 frames
    15. com.evermind.server
      StatelessSessionEJBObject.OC4J_invokeMethod
      1. com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
      2. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      3. com.evermind.server.ejb.interceptor.system.SetContextActionInterceptor.invoke(SetContextActionInterceptor.java:44)
      4. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      5. com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
      6. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      7. com.evermind.server.ejb.interceptor.system.TxNotSupportedInterceptor.invoke(TxNotSupportedInterceptor.java:43)
      8. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      9. com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
      10. com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
      11. com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
      12. com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
      12 frames
    16. Unknown
      WSManagerCmis_RemoteProxy_3ldln8.submitRequest
      1. WSManagerCmis_RemoteProxy_3ldln8.submitRequest(Unknown Source)
      1 frame
    17. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor418.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      3. java.lang.reflect.Method.invoke(Method.java:585)
      3 frames
    18. com.evermind.server
      RmiMethodCall.run
      1. com.evermind.server.rmi.RmiMethodCall.run(RmiMethodCall.java:67)
      1 frame
    19. com.evermind.util
      ReleasableResourcePooledExecutor$MyWorker.run
      1. com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
      1 frame
    20. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:595)
      1 frame