ORA-55567: The _highthreshold_undoretention value should be at least string based on the current undo retention settings.

文档解释

ORA-55567: The _highthreshold_undoretention value should be at least string based on the current undo retention settings.

Cause: The _highthreshold_undoretention value was not greater than or equal to the UNDO_RETENTION setting and the low threshold value used for tuning undo retention.

Action: Reissue the SQL statement with a higher value.

：

ORA-55567错误指名了在当前undo retention设置下，_highthreshold_undoretention值必须是一个字符串。

官方解释

常见案例

一般处理方法及步骤

1.使用ALTER SYSTEM语句来设置_highthreshold_undoretention值：

ALTER SYSTEM SET “_highthreshold_undoretention” = ’15 minutes’;

2.重新启动实例，以使更改生效：

SHUTDOWN IMMEDIATE;

STARTUP;