目录报错：ORA-65096: invalid common user or role name(公用用户名或角色名无效)。解决一：把容器改成pdb。解决二：这种可以正常导入数据库文件到指定的用户数据库附加内容：1、创建表空间2、创建用户并绑定表空间
What programming languages are a good choice for High Integrity Systems? An example of a bad choice is Java as there is a considerable amount of code that is inaccessible to the programmer. I am look
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