我只是执行了ut_documentation_reporter类型的头，而没有进行任何修改，我得到了这个错误。
ORA-21700: object does not exist or is marked for delete
ORA-06512: at "UT4.UT_EVENT_MANAGER", line 30
ORA-06512: at "UT4.UT_RUNNER", line 94
ORA-06512: at "UT4.UT", line 123
ORA-06512: at "UT4.UT", line 413
ORA-06512: at "UT4.UT", line 520
ORA-06512: at line 2