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java.sql.SQLException: Io Òì³£: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153092352)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:222)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:335)
at oracle.jdbc.driver.OracleConnection. <init>(OracleConnection.java:361)
at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:442)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:321)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:117)
at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:94)
at util.JdbcUtil4.getConnection(JdbcUtil4.java:27)
at util.JdbcUtil4.main(JdbcUtil4.java:67)
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java.sql.SQLException: Io Òì³£: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=153092352)(ERR=12505)(ERROR_STA