Oracle 12c R2 图形化升级时提示No databases detected

图像化12.1 升级12.2 时，页面提示No databases detected 如下图： 解决方法： 在/etc/oratab 文件中添加标红色的部分 [[email protected] ~]$ cat /etc/oratab # # This file is used by ORACLE utilities. It is created by root.sh # and upda

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