oracle dbms_output.put_line突然没法使用了

如题，前面做了删除用户以及表空间的操作，后来又重新创建了用户，但是出现了这个问题，

When you create a database it's standard procedure to run the scripts catproc.sql and catalog.sql. One of these call dbmsotpt.sql in your rdbms/admin folder. This creates the dbms_output package, defines a public synonym on it, and grants execute to the public role.

Either you have no sys.dbms_output package or the synonym is missing or you don't have the rights to execute it.