ORACLE 11g从 11.2.0.1升级到11.2.0.4 详细实战教程

1、准备安装 查看当前oracle版本,确定是比较旧的11.2.0.1 [oracle@hch_test_121_90 ~]$ rlwrap sqlplus / as sysdba SQL*Plus: Release 11.2.0.1.0 Production on Fri Mar 17 15:20:45 2017 Copyright (c) 1982, 2009, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Produ