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Io exception: The Network Adapter could not establish the connection
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Io exception: The Network Adapter could not establish the connection
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Io exception: The Network Adapter could not establish the connection
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)	at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:414)	at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:165)	at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)	at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1353)	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1409)	at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:1649)