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java.sql.SQLException: Io exception: Got minus one from a read call	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:420)	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 java.sql.DriverManager.getConnection(DriverManager.java:512)	at java.sql.DriverManager.getConnection(DriverManager.java:171)	at oracledatabasemetadata.DatabaseMetaDataSample.main(DatabaseMetaDataSample.java:34)