ORA-04061: existing state of string has been invalidated

文档解释

ORA-04061: existing state of string has been invalidated

Cause: Attempt to resume the execution of a stored procedure using the existing state which has become invalid or inconsistent with the stored procedure because the procedure has been altered or dropped.

Action: Try again; this error should have caused the existing state of all packages to be re-initialized.

官方解释

常见的案例是，当数据库中某些对象，如存储过程，视图或函数被修改，或卸载，用户仍在执行某些操作时。这些操作会使用现有的对象状态，但由于它们被更改了，这些状态就失效了，从而导致ORA-04061错误。

正常处理方法及步骤:

1. 检查报错信息，确定失效的对象。

2. 尝试重新编译失效的对象，确保该对象没有被人为修改。

3. 通过 alter package / procedure / trigger / view / functions 语句重新编译对象

4. 卸载已经被更改的包，然后再重新装载它，以确保它有效

5. 重新启动数据库。