Invalid operation
请求的 Data Pump 操作在当前上下文中无效。这通常是一个包装错误，伴随更具体的 ORA 错误。
SELECT * FROM dba_tab_privs WHERE table_name IN (SELECT directory_name FROM dba_directories);SELECT * FROM dba_role_privs WHERE granted_role IN ('EXP_FULL_DATABASE','IMP_FULL_DATABASE') AND grantee = 'USERNAME';