最近没事搞搞db2的数据,首先安装。下载了一个数据库的客户端。squirrel-sql这个客户端还是比较好用的。是一个免费的客户端。地址我就不贴了。
好了,进入正题。
db2和squirrel-sql都安装好之后,遇到一个让我郁闷了两天的问题。在用客户端连接db2数据库的时候出现异常。异常信息是:
com.ibm.db2.jcc.c.DisconnectException: [ibm][db2][jcc][t4][2030][11211] A communication error has been detected. Communication protocol being used: TCP/IP. Communication API being used: SOCKETS. Location where the error was detected: Reply.fill(). Communication function detecting the error: InputStream.read(). Protocol specific error codes Insufficient data, * , 0. Message: null at com.ibm.db2.jcc.a.a.a(a.java:366) at com.ibm.db2.jcc.a.ab.b(ab.java:219) at com.ibm.db2.jcc.a.ab.c(ab.java:237) at com.ibm.db2.jcc.a.ab.c(ab.java:348) at com.ibm.db2.jcc.a.ab.v(ab.java:1134) at com.ibm.db2.jcc.a.bb.a(bb.java:42) at com.ibm.db2.jcc.a.b.j(b.java:1254) at com.ibm.db2.jcc.a.b.b(b.java:1128) at com.ibm.db2.jcc.a.b.b(b.java:711) at com.ibm.db2.jcc.a.b.a(b.java:697) at com.ibm.db2.jcc.a.b.a(b.java:378) at com.ibm.db2.jcc.a.b.<init>(b.java:316) at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:174) at net.sourceforge.squirrel_sql.fw.sql.SQLDriverManager.getConnection(SQLDriverManager.java:133) at net.sourceforge.squirrel_sql.client.mainframe.action.OpenConnectionCommand.execute(OpenConnectionCommand.java:97) at net.sourceforge.squirrel_sql.client.mainframe.action.ConnectToAliasCommand$SheetHandler.run(ConnectToAliasCommand.java:281) at net.sourceforge.squirrel_sql.client.mainframe.action.ConnectToAliasCommand$SheetHandler.performOK(ConnectToAliasCommand.java:238) at net.sourceforge.squirrel_sql.client.gui.db.ConnectionInternalFrame.connect(ConnectionInternalFrame.java:311) at net.sourceforge.squirrel_sql.client.gui.db.ConnectionInternalFrame.access$300(ConnectionInternalFrame.java:56) at net.sourceforge.squirrel_sql.client.gui.db.ConnectionInternalFrame$MyOkClosePanelListener.okPressed(ConnectionInternalFrame.java:461) at net.sourceforge.squirrel_sql.client.gui.OkClosePanel.fireButtonPressed(OkClosePanel.java:148) at net.sourceforge.squirrel_sql.client.gui.OkClosePanel.access$100(OkClosePanel.java:33) at net.sourceforge.squirrel_sql.client.gui.OkClosePanel$1.actionPerformed(OkClosePanel.java:174) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at net.sourceforge.squirrel_sql.client.Main$1.dispatchEvent(Main.java:93) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)
当时我就郁闷了,带着沉重的心情上了百度、谷歌,实验了n种方法,最终没能解决这个问题。
后来发怒了,我写了一个jdbc连接数据库,出现另外一个问题:
连接失败! com.ibm.db2.jcc.am.DisconnectNonTransientConnectionException: [jcc][t4][2030][11211][4.16.53] 在对连接的底层 socket、socket input stream 或 socket output stream 执行操作期间 发生通信错误。错误位置:Reply.fill() - insufficient data (-1)。消息:数据不足。 ERRORCODE=-4499, SQLSTATE=08001 at com.ibm.db2.jcc.am.fd.a(fd.java:320) at com.ibm.db2.jcc.t4.a.a(a.java:526) at com.ibm.db2.jcc.t4.a.a(a.java:510) at com.ibm.db2.jcc.t4.a.a(a.java:505) at com.ibm.db2.jcc.t4.x.b(x.java:294) at com.ibm.db2.jcc.t4.x.c(x.java:320) at com.ibm.db2.jcc.t4.x.c(x.java:433) at com.ibm.db2.jcc.t4.x.v(x.java:1201) at com.ibm.db2.jcc.t4.y.a(y.java:51) at com.ibm.db2.jcc.t4.b.c(b.java:1353) at com.ibm.db2.jcc.t4.b.b(b.java:1225) at com.ibm.db2.jcc.t4.b.b(b.java:793) at com.ibm.db2.jcc.t4.b.a(b.java:765) at com.ibm.db2.jcc.t4.b.a(b.java:423) at com.ibm.db2.jcc.t4.b.a(b.java:398) at com.ibm.db2.jcc.t4.b.<init>(b.java:336) at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:233) at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:199) at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:474) at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:115) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:185) at com.DBconn.DBconnect.getConnection(DBconnect.java:36) at com.DBconn.DBconnect.main(DBconnect.java:49) Exception in thread "main" java.lang.NullPointerException at com.DBconn.DBconnect.main(DBconnect.java:51)
这就让我更加的郁闷了。一个错误还没有解决,新的错误又来了。然后我就死马当活马医。一个个用户名、密码实验,一个个ip实现。黄天不负有心人,最后让我试出来了。不过我也吐血了。
我丢:竟然最终原因就是ip有问题。不能用127.0.01、localhost访问。最终我改成本机的ip后,解决了。我也吐血了。
推荐一个db2的配置:http://publib.boulder.ibm.com/tividd/td/ITMFTP/GC23-4801-00/zh_CN/HTML/WTPImst30.htm
配置查询:http://iamwave.iteye.com/blog/649730
db2数据库的学习中心:http://pic.dhe.ibm.com/infocenter/db2luw/v9r7/index.jsp
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