PLS-00201: identifier 'DBMS_BLOCK_MONITOR.SET_BLOCK_CHANGE_TRACKING' must be declared

如果在执行 `EXECUTE DBMS_BLOCK_MONITOR.SET_BLOCK_CHANGE_TRACKING(TRUE);` 命令时出现 `PLS-00201: identifier 'DBMS_BLOCK_MONITOR.SET_BLOCK_CHANGE_TRACKING' must be declared` 错误，可能是因为当前的用户没有访问 DBMS_BLOCK_MONITOR 包的权限。

可以尝试授予用户相应的权限，例如：

GRANT EXECUTE ON DBMS_BLOCK_MONITOR TO <your_user>;

其中，`<your_user>` 是要授予权限的用户名，该命令将允许该用户执行 DBMS_BLOCK_MONITOR 包中的所有过程和函数。

如果以上方法无法解决问题，可能是因为 DBMS_BLOCK_MONITOR 包未被正确安装或配置。在这种情况下，您需要使用适当的权限登录数据库并重新安装或配置该包。

相关问题

Error: PLS-00201: identifier 'DBMS_AQ'must be declared

This error message indicates that the Oracle database does not recognize the DBMS_AQ package. This package is used for Advanced Queuing in Oracle databases, which allows messages to be sent between different applications or components within a database.

To resolve this error, you will need to ensure that the DBMS_AQ package is installed and accessible to your database user. You can do this by connecting to the database as a user with DBA privileges and running the following SQL statement:

GRANT EXECUTE ON DBMS_AQ TO <your_user>;

Replace `<your_user>` with the name of the database user that you are using. This statement grants the necessary permissions to execute the DBMS_AQ package.

If the package is not installed, you may need to install it using the Oracle Universal Installer or by running the appropriate SQL script.