1、 前端登錄界面
2、 后台應用日志
報錯信息一致為：
$$callid= $$thread=[Service Monitor and Runtime Enroment] $$host= $$userid= $$ts=2017-05-23 09:18:13 $$remotecall=[nc.bs.mw.ejbsql.IerpXADataSource] $$debuglevel=ERROR $$msg=initializing the connection pool failed,can't open database connection
java.sql.SQLException: Io 異常: Got minus one from a read call
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:147)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:257)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:389)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:454)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:802)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:171)
at nc.bs.mw.ejb.xares.IerpDataSource.getConnection(IerpDataSource.java:38)
at nc.bs.mw.ejbsql.IerpXADataSource.createNoXaConnection(IerpXADataSource.java:601)
at nc.bs.mw.ejbsql.IerpXADataSource.init(IerpXADataSource.java:212)
at nc.bs.mw.ejbsql.IerpXADataSource.init(IerpXADataSource.java:859)
at nc.bs.mw.naming.EJBContainerService.initDataSource(EJBContainerService.java:72)
at nc.bs.mw.naming.EJBContainerService.startServer(EJBContainerService.java:196)
at nc.bs.mw.fm.ServiceManager.startBaseService(ServiceManager.java:348)
at nc.bs.mw.fm.ServiceManager.run(ServiceManager.java:236)
二、問題分析
1．查看數據庫服務器信息
經過DBA排查初步斷定為數據服務器出了問題，接下來由DBA協助問題處理解決。
三、問題解決
1、 經過DBA的協助下，NC恢復正常訪問
