今天有个客户咨询在nbu6.5上 备份Oracle10g时不能成功,报错code是6,查看了一下oracle的日志显示如下:RMAN-12001: could not open channel ch01 RMAN-10008: could not create channel context RMAN-10003: unable to connect to target database ORA-12170: TNS:Connect timeout occurred;查看了一下监听的状态发现状态是启动的,但不显示监听的实例,建议用户把监听重启一下,如果能解决,再更新。VMware 7 安装Oracle11.2 grid 虚拟机配置Oracle忘记 sys 用户密码的解决相关资讯 Oracle教程