数据坏块:ORA-01578、ORA-01110

在服务器经历停电并重启后,Oracle数据库出现ORA-01578错误,表示数据块损坏。错误涉及文件号12的NNC_DATA01A.DBF和文件号5的NNC_DATA01.DBF。系统生成了多个事故日志,并建议保留redo日志以帮助诊断。解决方案包括查询DBA_EXTENTS以识别损坏块对应的表空间和对象,以及使用备份进行数据导入以恢复受影响的数据。

数据坏块:ORA-01578ORA-01110

一、问题现象

公司停电,服务器重启后,审批单据报错:sql:UPDATE sm msg user SET isread = "Y' WHERE smmsg user.isdelete = N' AND sm msg user.destinatior= inbox' AND sm msg user,pk message IN (1001S3100000042U4ZU') AND sm_msg _user.isreject='N' or smmsg user.isreject is null ORA-01578: ORACLE 数据块损坏(文件号 12,块号 1120751)ORA-01110: 数据文件 12:D:XAPPVADMINISTRATORWORADATAVORCL\\NNC_DATA01A.DBF

二、分析思路

Dumping current patch information

===========================================================

No patches have been applied

===========================================================

2023-05-04T12:52:06.187757+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_13044.trc  (incident=493073):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493073\orcl_ora_13044_i493073.trc

2023-05-04T12:52:08.655893+08:00

*****************************************************************

An internal routine has requested a dump of selected redo.

This usually happens following a specific internal error, when

analysis of the redo logs will help Oracle Support with the

diagnosis.

It is recommended that you retain all the redo logs generated (by

all the instances) during the past 12 hours, in case additional

redo dumps are required to help with the diagnosis.

*****************************************************************

2023-05-04T12:52:12.248750+08:00

Checker run found 1 new persistent data failures

2023-05-04T12:53:02.059195+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493089):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493089\orcl_ora_8796_i493089.trc

2023-05-04T12:53:07.729660+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493090):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493090\orcl_ora_8796_i493090.trc

2023-05-04T12:53:10.072827+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_12544.trc  (incident=493081):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493081\orcl_ora_12544_i493081.trc

2023-05-04T12:54:30.863012+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11336.trc  (incident=493145):

ORA-01578: ORACLE 数据块损坏 (文件号 5, 块号 3479347)

ORA-01110: 数据文件 5: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01.DBF'

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493145\orcl_ora_11336_i493145.trc

2023-05-04T12:54:30.987981+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493091):

ORA-01578: ORACLE 数据块损坏 (文件号 5, 块号 3479347)

ORA-01110: 数据文件 5: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01.DBF'

2023-05-04T12:54:33.540707+08:00

Checker run found 1 new persistent data failures

2023-05-04T12:54:34.477974+08:00

*****************************************************************

An internal routine has requested a dump of selected redo.

This usually happens following a specific internal error, when

analysis of the redo logs will help Oracle Support with the

diagnosis.

It is recommended that you retain all the redo logs generated (by

all the instances) during the past 12 hours, in case additional

redo dumps are required to help with the diagnosis.

*****************************************************************

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_13044.trc  (incident=493074):

ORA-00600: 内部错误代码, 参数: [kdliReadPos], [26920], [24468493], [0], [0], [], [], [], [], [], [], []

Incident details in: D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\incident\incdir_493074\orcl_ora_13044_i493074.trc

Use ADRCI or Support Workbench to package the incident.

See Note 411.1 at My Oracle Support for error and packaging details.

*****************************************************************

An internal routine has requested a dump of selected redo.

This usually happens following a specific internal error, when

analysis of the redo logs will help Oracle Support with the

diagnosis.

It is recommended that you retain all the redo logs generated (by

all the instances) during the past 12 hours, in case additional

redo dumps are required to help with the diagnosis.

*****************************************************************

2023-05-04T12:54:39.079514+08:00

Dumping diagnostic data in directory=[cdmp_20230504125439], requested by (instance=1, osid=13044), summary=[incident=493074].

2023-05-04T12:54:43.259069+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_5636.trc  (incident=493097):

ORA-01578: ORACLE 数据块损坏 (文件号 5, 块号 3479347)

ORA-01110: 数据文件 5: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01.DBF'

2023-05-04T12:55:23.237366+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493092):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:56:51.549653+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493137):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:57:17.609400+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_12544.trc  (incident=493082):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:57:23.259059+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493138):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:57:44.364956+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493139):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:58:05.995737+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11472.trc  (incident=493129):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:58:06.276917+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11336.trc  (incident=493146):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:58:34.332101+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_4424.trc  (incident=493121):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:58:44.059946+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_9228.trc  (incident=493113):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:58:47.963776+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_1952.trc  (incident=493105):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T12:59:14.091241+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_1952.trc  (incident=493106):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:01:57.750046+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_5636.trc  (incident=493098):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:02:05.184323+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493140):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:02:34.432232+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11336.trc  (incident=493147):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:02:57.076758+08:00

Thread 1 advanced to log sequence 21511 (LGWR switch)

  Current log# 1 seq# 21511 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG

2023-05-04T13:07:06.787953+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493093):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:07:14.206733+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_9688.trc  (incident=493945):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:08:40.709288+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_12544.trc  (incident=493083):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:09:19.034050+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493094):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:10:01.010721+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11336.trc  (incident=493148):

ORA-01578: ORACLE 数据块损坏 (文件号 5, 块号 3479347)

ORA-01110: 数据文件 5: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01.DBF'

2023-05-04T13:10:01.303320+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_1952.trc  (incident=493107):

ORA-01578: ORACLE 数据块损坏 (文件号 5, 块号 3479347)

ORA-01110: 数据文件 5: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01.DBF'

2023-05-04T13:10:34.924690+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493095):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:11:00.567224+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_1952.trc  (incident=493108):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:12:24.623039+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493141):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:12:33.713652+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11472.trc  (incident=493130):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:12:50.330267+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_5636.trc  (incident=493099):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:13:01.075802+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_12544.trc  (incident=493084):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:13:10.309446+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_8796.trc  (incident=493096):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:13:46.352520+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_11336.trc  (incident=493149):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:13:47.862685+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_4424.trc  (incident=493122):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:13:52.666816+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_9228.trc  (incident=493114):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:14:36.042139+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_9228.trc  (incident=493115):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:14:42.813535+08:00

Thread 1 advanced to log sequence 21512 (LGWR switch)

  Current log# 2 seq# 21512 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO02.LOG

2023-05-04T13:15:53.497918+08:00

Errors in file D:\APP\ADMINISTRATOR\diag\rdbms\orcl\orcl\trace\orcl_ora_2164.trc  (incident=493142):

ORA-01578: ORACLE 数据块损坏 (文件号 12, 块号 1120751)

ORA-01110: 数据文件 12: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\NNC_DATA01A.DBF'

2023-05-04T13:53:27.855857+08:00

三、解决方案

SELECT tablespace_name, segment_type, owner, segment_name FROM dba_extents WHERE file_id = 12 and 1120751 between block_id AND block_id + blocks 1

SELECT tablespace_name, segment_type, owner, segment_name FROM dba_extents WHERE file_id = 5 and 3479347 between block_id AND block_id + blocks 1

找到之前的备份

impdp LSTH/lsth dumpfile=BACK20230504.DMP logfile=BACK20230504impdp.log directory=EXPDP_DIR table_exists_action=truncate tables=(SM_MSG_USER)

<think>嗯,用户这次询问的是Oracle数据库导出过程中的一系列错误代码解决方案。结合提供的三个引用资料来看,用户遇到的是expdp导出时常见的复合型错误:ORA-31693(表数据卸载失败)实际是结果性报错,核心问题在于ORA-02354(导出过程异常)和ORA-01555(快照过旧),偶尔伴随ORA-22924(快照过旧的特殊形态)。 用户可能正在执行数据库迁移或备份任务,从引用[3]提到的105GB大表导出失败来看,业务规模不小。ta连续遇到多个同类错误,说明不是偶发现象,需要系统化解决。尤其值得注意的是引用[1]和[3]都指向视图/同义词解析问题和大事务回滚段配置不足这两类根源。 深层需求其实是保证数据导出任务的可靠性。用户没有明说但可能隐含的痛点包括:生产环境停机时间有限、数据一致性要求高、以及对Oracle内部机制不熟悉带来的排查困难。 技术层面需要分三层处理: 首先是紧急应对措施,比如针对ORA-01555错误立即扩大UNDO表空间或调整参数,这类方案能在数分钟内生效; 其次要解决结构性问题,比如引用[1]提到的视图导出失败需要重建元数据; 最后是预防性优化,像引用[2][3]都提到的UNDO保留时间调整和大事务拆分策略。 特别要注意引用[3]揭示的陷阱——当导出大表时,如果存在并发DML操作,即使UNDO表空间总量足够,也可能因快照保留时间不足导致失败。这需要综合运用UNDO_RETENTION参数优化和导出时机的选择。 用户提供的错误代码组合很典型,正好构成完整的故障链条:ORA-02354是导出的通用异常包装器,ORA-31693是被跳过对象的报告,真正致命的底层错误是ORA-01555及其变种ORA-22924。这个诊断结论应该明确传达给用户。 </think>以下是针对Oracle数据库错误代码 **ORA-31693、ORA-02354、ORA-01555 和 ORA-22924** 的综合解决方案,结合引用内容和Oracle官方建议整理: --- ### **错误原因分析** 1. **ORA-31693 + ORA-02354** - 通常在`expdp`导出时发生,表示特定表(如 `YKSOFT.T_TEMP_U90915`)因元数据问题无法导出。 - **核心问题**:尝试导出**视图或同义词**(而非实际表),或对象元数据损坏(引用[1][^1])。 2. **ORA-01555: snapshot too old** - 导出过程中查询的数据版本被覆盖,因UNDO表空间不足或事务保留时间过短(引用[2][^2][^3])。 - 常见于导出超大表时(如引用[3]中105GB的表)。 3. **ORA-22924: snapshot too old** -ORA-01555的衍生错误,通常与LOB字段导出相关(引用[2][^2])。 --- ### **解决方案步骤** #### **1. 修复元数据问题(针对ORA-31693 + ORA-02354)** ```sql -- 检查对象类型(确认是表/视图/同义词) SELECT object_name, object_type FROM dba_objects WHERE owner='YKSOFT' AND object_name='T_TEMP_U90915'; -- 若为视图/同义词:重建或替换为实体表 CREATE TABLE YKSOFT.T_TEMP_U90915_ACTUAL AS SELECT * FROM T_TEMP_U90915; -- 导出新表替代原对象 ``` #### **2. 解决ORA-01555 / ORA-22924(快照过旧)** - **增大UNDO表空间**: ```sql ALTER TABLESPACE UNDOTBS1 ADD DATAFILE '/path/undotbs02.dbf' SIZE 10G AUTOEXTEND ON; ``` - **延长UNDO保留时间**: ```sql ALTER SYSTEM SET UNDO_RETENTION = 1800; -- 单位:秒(建议≥导出耗时) ``` - **优化导出参数**: ```bash expdp user/pwd DIRECTORY=dpump_dir DUMPFILE=exp.dmp LOGFILE=exp.log FLASHBACK_TIME=SYSTIMESTAMP -- 使用闪回保证一致性 PARALLEL=4 -- 降低并行度减少UNDO压力 ``` #### **3. 分治策略导出大表** - **单独导出失败的表**(避免全局失败): ```bash expdp user/pwd TABLES=SJTBK.INC_KETTLE_ETL_HIST, SJTBK.ECPS_EASY_LOGOUT DIRECTORY=dpump_dir DUMPFILE=large_tables.dmp ``` - **使用`QUERY`条件分批导出**: ```bash expdp ... QUERY="WHERE ROWNUM<=1000000" -- 分批导出 ``` #### **4. 预防性措施** - **监控UNDO使用**: ```sql SELECT BEGIN_TIME, TUNED_UNDORETENTION FROM V$UNDOSTAT; ``` - **避免导出高峰期操作**:减少并发DML对UNDO的争用。 - **改用物理备份**:对百GB级数据,RMAN比逻辑导出更可靠(引用[2][^2])。 --- ### **关键要点总结** | 错误码 | 主因 | 解决方案 | |-----------------|-----------------------|-----------------------------| | ORA-31693+02354 | 视图/同义词元数据异常 | 重建对象或导出实体表 | | ORA-01555 | UNDO空间或保留时间不足| 增大UNDO、延长保留时间 | | ORA-22924 | LOB字段导出快照过旧 | 分批导出+优化UNDO参数 | > ⚠️ 若问题持续,检查`alert.log`获取更详细的堆栈信息,并考虑使用Oracle Support收集诊断数据(RDA工具)[^3]。 ---
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