oracle错误-ORA-12519, TNS:no appropriate service handler found
错误重现:java连接oracle数据库,更新表的字段,当更新到2000条左右时就报错(每次报错时更新的条数不定,但是不会太少),重新运行程序后还是会报错导致更新停止。报错信息:Could not get JDBC Connection; nested exception is java.sql.SQLException: Listener refused the connection with