小编Yvá*_*rri的帖子

我正在尝试在 Windows 7 x64 计算机上安装 Oracle 12c，一段时间后出现此错误：

SEVERE: [FATAL] [INS-30131] Initial setup required for the execution of installer validations failed.
   CAUSE: Failed to access the temporary location.
   ACTION: Ensure that the current user has required permissions to access the temporary location.
*ADDITIONAL INFORMATION:*
- Framework setup check failed on all the nodes
- Cause: Cause Of Problem Not Available
- Action: User Action Not Available
Summary of the failed nodes
maddy-pc
- Version of exectask could not be retrieved from …

我想创建一个带有字段默认约束的表。我知道我可以在创建表后添加约束，但我需要在一个命令中创建表和指定的默认约束，如下所示

create table table1(field1 varchar(25), constraint df_table1_field1 default('a') for field1)

不幸的是，这不起作用。

有什么建议么？