文档解释 ORA-48502: Invalid Command Line – Missing Required Elements Cause: Missing required command line arguments. Action: Review the help message……

文档解释 ORA-28555: pass-through SQL: required parameter missing or NULL Cause: An attempt was made to pass a NULL value to a non-NULL parameter. Ac……

文档解释 ORA-38797: Full database recovery required after a database has been flashed back Cause: An attempt was made to recover some datafiles or t……

文档解释 Error number: MY-013430; Symbol: ER_AUDIT_LOG_FILE_NAME_DOES_NOT_HAVE_REQUIRED_FORMAT; SQLSTATE: HY000 Message: Cannot process audit log fi……

文档解释 ORA-30930: NOCYCLE keyword is required with CONNECT_BY_ISCYCLE pseudocolumn Cause: CONNECT_BY_ISCYCLE was specifed in a query which does no……

文档解释 ORA-15273: Could not create the required number of voting files. Cause: The required number of voting files could not be created. See accom……

文档解释 ORA-39954: DEFERRED is required for this system parameter Cause: The ALTER SYSTEM command for PLSQL_WARNINGS did not include the keyword, D……

文档解释 ORA-16139: media recovery required Cause: An error has occurred while performing a switchover. Action: If you were switching a primary data……

文档解释 ORA-28357: password required to open the wallet Cause: A password was not provided when executing the open wallet command. Action: Retry th……

说明 1、要想定义必填字段，只需要在 fields 里面加入 required 参数并设置为 True 即可。 2、还可以自定义错误信息，使用 error_messages 即可。 实例 from&……