PL/SQL: could not find program unit being called
PL/SQL 块尝试调用不存在、无效或已被删除的过程、函数或包，而会话仍持有对其的缓存引用。
SELECT object_name, object_type, status FROM dba_objects WHERE status = 'INVALID' ORDER BY object_type, object_name;SELECT owner, object_name, object_type FROM dba_objects WHERE object_name = 'PACKAGE_NAME';