在win7系统中使用xshell连接Oracle数据库服务器，配置监听使用netca报错

[oracle@nexus ~]$ netca Oracle Net Services Configuration: Error: null Check the trace file for details: /opt/oracle/cfgtoollogs/netca/trace_OraDb11g_home1-1609063PM3137.log Oracle Net Services configuration failed.  The exit code is 1 [oracle@nexus ~]$ tail /opt/oracle/cfgtoollogs/netca/trace_OraDb11g_home1-1609063PM3137.log [main] [ 2016-09-06 15:31:38.782 CST ] [OracleHome.getVersion:936]  OracleHome.server.getVersion Version: 11.2.0.3.0 [main] [ 2016-09-06 15:31:38.783 CST ] [OracleHome.getVersion:957]  Current Version From Inventory: 11.2.0.3.0 [main] [ 2016-09-06 15:31:38.783 CST ] [OPSUtil.getHomeVersion:452]  returning oracleHome Version = 11.2.0.3.0 [main] [ 2016-09-06 15:31:38.788 CST ] [OracleHome.getVersion:889]  OracleHome.getVersion called.  Current Version: 11.2.0.3.0 [main] [ 2016-09-06 15:31:38.789 CST ] [OracleHome.getVersion:957]  Current Version From Inventory: 11.2.0.3.0 [main] [ 2016-09-06 15:31:38.789 CST ] [InitialSetup.<init>:4071]  Admin location is: /opt/oracle/11g/network/admin [main] [ 2016-09-06 15:31:38.877 CST ] [ConfigureProfile.setProfileParam:136]  Setting ADR_BASE: /opt/oracle java.lang.NullPointerException at oracle.ewt.lwAWT.BufferedApplet.<init>(Unknown Source) at oracle.net.ca.NetCA.<init>(NetCA.java:443) at oracle.net.ca.NetCA.main(NetCA.java:429)

这个是由于win7无法通过xshell调出服务器的图形界面，执行下面三个命令后即可

切换到Oracle用户后再执行如下命令

[oracle@nexus ~]$ export DISPLAY=192.168.20.100:0    //192.168.20.100 是win7的地址，不是服务器的IP地址，切记

[oracle@nexus ~]$ xhost +

access control disabled, clients can connect from any host    //证明设置成功

[oracle@nexus ~]$ netca

Oracle Net Services Configuration:        //出现这个表名出现图形界面