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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 theconnection at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:334) at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:418) at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:521) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:325) at java.sql.DriverManager.getConnection(DriverManager.java:512) at java.sql.DriverManager.getConnection(DriverManager.java:171) at MyOracleConnection.main(MyOracleConnection.java:15)