作者归档：惜分飞

expdp导出xml列报ORA-22924故障处理

发表于 2026 年 2 月 14 日 由 惜分飞

expdp导出xml列类型表报错

连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
启动 "SYS"."EXPDP_TBA1":  "/******** AS SYSDBA" tables=XFF.XML_TAB dumpfile=XML_TAB.dmp
    DIRECTORY=expdp_dir logfile=expdp_XML_TAB.log EXCLUDE=STATISTICS job_name=expdp_tba1
正在使用 BLOCKS 方法进行估计...
处理对象类型 TABLE_EXPORT/TABLE/TABLE_DATA
使用 BLOCKS 方法的总估计: 13.12 GB
处理对象类型 TABLE_EXPORT/TABLE/TABLE
处理对象类型 TABLE_EXPORT/TABLE/INDEX/INDEX
处理对象类型 TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
处理对象类型 TABLE_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
ORA-31693: 表数据对象 "XFF"."XML_TAB" 无法加载/卸载并且被跳过, 错误如下:
ORA-29913: 执行 ODCIEXTTABLEPOPULATE 调出时出错
ORA-22924: 快照太旧
已成功加载/卸载了主表 "SYS"."EXPDP_TBA1"
******************************************************************************
SYS.EXPDP_TBA1 的转储文件集为:
  D:\XML_TAB.DMP
作业 "SYS"."EXPDP_TBA1" 已经完成, 但是有 1 个错误 (于 星期六 2月 14 09:01:26 2026 elapsed 0 00:04:15 完成)

一般对于这些问题的解决思路是找出来异常的行的rowid,然后导出跳过异常行或者把对应的xml列置空,关键就是如何找出来该记录,这里自己写了一个plsql来找出来异常rowid

SQL> declare
  2  page number;
  3  len number;
  4  c varchar2(10);
  5  charpp number := 8132/2;
  6  n number;
  7  v_sqlerrm varchar2(100);
  8  begin
  9  n := 0;
 10  for r in (select rowid rid from XFF.XML_TAB order by rowid) loop
 11  begin
 12  select dbms_lob.getlength (xmltype.getclobval(XML_COL)) into c from XFF.XML_TAB     where rowid = r.rid;
 13  v_sqlerrm := SQLERRM;
 14  insert into result values (n, r.rid, 'good', page, v_sqlerrm);
 15  commit;
 16  exception
 17  when others then
 18  dbms_output.put_line ('Error on rowid ' ||r.rid||' page '||page);
 19  dbms_output.put_line (sqlerrm);
 20  v_sqlerrm := SQLERRM;
 21  insert into result values (n, r.rid, 'bad',page,v_sqlerrm);
 22  commit;
 23  end;
 24  end loop;
 25  end;
 26  /
Error on rowid AAASO1AAKAAAH5bAAC page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138
Error on rowid AAASO1AAKAAAIPtAAZ page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138
Error on rowid AAASO1AAKAAAIRfAAU page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138
Error on rowid AAASO1AAKAAAIS9AAW page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138
Error on rowid AAASO1AAKAAAIT7AAW page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138
Error on rowid AAASO1AAKAAAIT/AAG page
ORA-22924: 快照太旧
ORA-06512: 在 "SYS.XMLTYPE", line 138

PL/SQL 过程已成功完成。

然后expdp导出数据跳过这些异常的rowid的par文件

directory=expdp_dir
dumpfile=expdp_XFF.XML_TAB.dmp
logfile=expdp_XFF.XML_TAB.log
tables=XFF.XML_TAB
query="XFF.XML_TAB:WHERE rowid not IN  ('AAASO1AAKAAAH5bAAC','AAASO1AAKAAAIPtAAZ','AAASO1AAKAAAIT7AAW',
'AAASO1AAKAAAIT/AAG', 'AAASO1AAKAAAIRfAAU','AAASO1AAKAAAIS9AAW')"
job_name=exp_1

数据可以正常到导出
expdp

也可以通过update语句直接把异常的xml值直接置空

update XFF.XML_TAB
set XML_COL = XMLType.createXML('')
where rowid in (select checked_rowid from result where status='bad');
发表在 逻辑备份/恢复 | 标签为 | 留下评论

obet处理ORA-704 ORA-604 ORA-1578故障

发表于 2026 年 2 月 9 日 由 惜分飞

有客户数据库启动报ORA-704 ORA-604 ORA-1578错误,导致启动失败
ORA-704-ORA-1578

alert日志报错

Fri Feb 06 23:38:43 2026
SMON: enabling cache recovery
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl1/trace/orcl1_ora_239325.trc  (incident=1008437):
ORA-01578: ORACLE data block corrupted (file # 1, block # 241)
ORA-01110: data file 1: '+DATADG/orcl/datafile/system.270.1015415183'
Fri Feb 06 23:38:46 2026
Redo thread 2 internally disabled at seq 6 (CKPT)
Archived Log entry 182212 added for thread 2 sequence 5 ID 0xd68b4385 dest 1:
ARC0: Archiving disabled thread 2 sequence 6
Archived Log entry 182213 added for thread 2 sequence 6 ID 0xd68b4385 dest 1:
Thread 1 advanced to log sequence 9 (LGWR switch)
  Current log# 1 seq# 9 mem# 0: +DATADG/orcl/onlinelog/group_1.302.1223816761
  Current log# 1 seq# 9 mem# 1: +ARCHDG/orcl/onlinelog/group_1.257.1223816761
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl1/trace/orcl1_ora_239325.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01578: ORACLE data block corrupted (file # 1, block # 241)
ORA-01110: data file 1: '+DATADG/orcl/datafile/system.270.1015415183'
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl1/trace/orcl1_ora_239325.trc:
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01578: ORACLE data block corrupted (file # 1, block # 241)
ORA-01110: data file 1: '+DATADG/orcl/datafile/system.270.1015415183'
Error 704 happened during db open, shutting down database
USER (ospid: 239325): terminating the instance due to error 704
Fri Feb 06 23:38:48 2026
Instance terminated by USER, pid = 239325
ORA-1092 signalled during: alter database open...
opiodr aborting process unknown ospid (239325) as a result of ORA-1092
Fri Feb 06 23:38:48 2026
ORA-1092 : opitsk aborting process

对system文件进行dbv检测(客户通过asmcmd cp命令拷贝出来system文件)

DBVERIFY - Verification starting : FILE = /asm_backup/orcl/datafile/SYSTEM.270.1015415183

DBV-00200: Block, DBA 4194545, already marked corrupt
csc(0x0006.d75a0ed7) higher than block scn(0x0000.00000000)
Page 241 failed with check code 6054

DBV-00200: Block, DBA 4306619, already marked corrupt
csc(0x0006.d75a14f4) higher than block scn(0x0000.00000000)
Page 112315 failed with check code 6054


DBVERIFY - Verification complete

Total Pages Examined         : 738560
Total Pages Processed (Data) : 424109
Total Pages Failing   (Data) : 1
Total Pages Processed (Index): 287403
Total Pages Failing   (Index): 1
Total Pages Processed (Other): 3408
Total Pages Processed (Seg)  : 1
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 23640
Total Pages Marked Corrupt   : 2
Total Pages Influx           : 0
Total Pages Encrypted        : 0
Highest block SCN            : 3613010282 (6.3613010282)

这里可以看到有两个block被标记为坏块原因是由于:csc(0×0006.d75a0ed7) higher than block scn(0×0000.00000000),坏块错误代码为:Page 241 failed with check code 6054.这种问题的原因是由于block的scn小于数据块的csc(一般是由于写丢失导致),对于这个问题,最近在obet中刚刚增加了repair blkscn功能进行修复,具体参考:obet修复csc higher than block scn类型坏块,使用工具修复操作(其他block类似修改)

OBET> set filename /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183
filename set to: /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183

OBET> set block 241
block set to: 241

OBET> backup
Created backup directory: backup_blk
Successfully backed up current block from current file to 
    /tmp/backup_blk/SYSTEM.270.1015415183_241.20260209122822

OBET> repair blkscn

Repairing SCN for block 241...

Current block SCN information:
  scn_base: 0x00000000 (0)
  scn_wrap: 0x0000 (0)

Block 1 reference information:
  hdr_base: 0xD75FF65E (3613390430)
  hdr_wrap: 0x0006 (6)

Current block CSC information:
  csc_base: 0xD75A0ED7 (3613003479)
  csc_wrap: 0x0006 (6)

Calculated values:
  blkcsc: 29382807255 (0x00000006D75A0ED7)
  blkscn: 0 (0x0000000000000000)

blkscn < blkcsc, SCN repair required.

SCN repair requires edit mode.
Please enable edit mode with 'set mode edit' first.

OBET> set mode edit
mode set to: edit

OBET> repair blkscn

Repairing SCN for block 241...

Current block SCN information:
  scn_base: 0x00000000 (0)
  scn_wrap: 0x0000 (0)

Block 1 reference information:
  hdr_base: 0xD75FF65E (3613390430)
  hdr_wrap: 0x0006 (6)

Current block CSC information:
  csc_base: 0xD75A0ED7 (3613003479)
  csc_wrap: 0x0006 (6)

Calculated values:
  blkcsc: 29382807255 (0x00000006D75A0ED7)
  blkscn: 0 (0x0000000000000000)

blkscn < blkcsc, SCN repair required.

New SCN values to write:
  new_scn_base: 0xD75FF65D (3613390429)
  new_scn_wrap: 0x0006 (6)

Confirm SCN repair operations:
File: /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183
Block: 241
Operations:
  1. Write new scn_base (0xD75FF65D)
  2. Write new scn_wrap (0x0006)
  3. Fix seq_kcbh (0xFF -> 0x01)

Confirm? (Y/YES to proceed): y

[Undo information saved - use 'undo' command to restore original values]

Verification after SCN repair:
1. scn_base: 5DF65FD7 (expected: 5DF65FD7)
2. scn_wrap: 0600 (expected: 0600)
3. seq_kcbh: 0x01 OK

Block 241 SCN repair completed successfully.
Execute tailchk apply and sum apply for this block.

OBET> tailchk apply

Confirm applying tailchk:
File: /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183
Block: 241
Offset in block: 8188 (file offset: 0x001E3FFC)
Original value: 0xFF060000
New value:      0x01065DF6
Confirm? (Y/YES to proceed): y
Verification successful: Stored tailchk matches calculated value (0x01065DF6).
Tailchk applied successfully.

OBET> sum apply

Confirm applying checksum:
File: /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183
Block: 241
Offset in block: 16 (file offset: 0x001E2010)
Original value: 0x7330
New value:      0x2AE7
Confirm? (Y/YES to proceed): y
Verification successful: Stored checksum matches calculated value (0x2AE7).
Checksum applied successfully.

然后dbv检查数据文件

[oracle@db4 tmp]$ dbv file=/datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183

DBVERIFY: Release 11.2.0.4.0 - Production on Mon Feb 9 20:37:54 2026

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - Verification starting : FILE =
         /datapool/asm_backup/orcl/datafile/SYSTEM.270.1015415183


DBVERIFY - Verification complete

Total Pages Examined         : 738560
Total Pages Processed (Data) : 424109
Total Pages Failing   (Data) : 0
Total Pages Processed (Index): 287403
Total Pages Failing   (Index): 1
Total Pages Processed (Other): 3408
Total Pages Processed (Seg)  : 1
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 23640
Total Pages Marked Corrupt   : 0
Total Pages Influx           : 0
Total Pages Encrypted        : 0
Highest block SCN            : 3613451063 (6.3613451063)

然后直接顺利打开数据库

SQL> alter database open;

Database altered.

由于该库在我接手之前已经做了大量的强制拉库等各种恢复尝试,因此对该库做逻辑导出,导入新库完成本次恢复任务

发表在 Oracle备份恢复 | 标签为 , | 留下评论

obet修复csc higher than block scn类型坏块

发表于 2026 年 2 月 8 日 由 惜分飞

最近有客户数据库报ORA-01092 ORA-01578错误导致数据库无法open

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00704: bootstrap process failure
ORA-00704: bootstrap process failure
ORA-00604: error occurred at recursive SQL level 1
ORA-01578: ORACLE data block corrupted (file # 1, block # 2123)
ORA-01110: data file 1: '+DATADG/orcl/datafile/system.270.1015415183'
Process ID: 239325
Session ID: 1599 Serial number: 7

通过dbv检查确认是csc higher than block scn故障

DBVERIFY: Release 11.2.0.4.0 - Production on Sat Feb 7 03:47:12 2026

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - Verification starting : FILE = +DATADG/orcl/datafile/SYSTEM.270.1015415183

DBV-00200: Block, DBA 4306619, already marked corrupt
csc(0x0006.d75a14f4) higher than block scn(0x0000.00000000)
Page 2123 failed with check code 6054


DBVERIFY - Verification complete

Total Pages Examined         : 738560
Total Pages Processed (Data) : 424109
Total Pages Failing   (Data) : 1
Total Pages Processed (Index): 287403
Total Pages Failing   (Index): 1
Total Pages Processed (Other): 3408
Total Pages Processed (Seg)  : 1
Total Pages Failing   (Seg)  : 0
Total Pages Empty            : 23640
Total Pages Marked Corrupt   : 1
Total Pages Influx           : 0
Total Pages Encrypted        : 0
Highest block SCN            : 3613010282 (6.3613010282)

对于这样的故障,最近把他整合到了obet工具中,执行命令为repair blkscn [block x]进行修复

C:\Users\XFF>dbv file=H:\TEMP\SYSTEM01.DBF

DBVERIFY: Release 11.2.0.4.0 - Production on 星期日 2月 8 11:07:51 2026

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - 开始验证: FILE = H:\TEMP\SYSTEM01.DBF
csc(0x0012.a0d783c4) higher than block scn(0x0000.00000000)
页 241 失败, 校验代码为 6054

DBVERIFY - 验证完成

检查的页总数: 325120
处理的页总数 (数据): 99921
失败的页总数 (数据): 1
处理的页总数 (索引): 34013
失败的页总数 (索引): 0
处理的页总数 (其他): 174241
处理的总页数 (段)  : 1
失败的总页数 (段)  : 0
空的页总数: 16945
标记为损坏的总页数: 0
流入的页总数: 0
加密的总页数        : 0
最高块 SCN            : 2698836688 (18.2698836688)

使用obet修复csc higher than block scn 故障

OBET> set filename H:\TEMP\SYSTEM01.DBF
filename set to: H:\TEMP\SYSTEM01.DBF

OBET> set block 241
block set to: 241

OBET> set mode edit
mode set to: edit

OBET> repair blkscn

Repairing SCN for block 241...

Current block SCN information:
  scn_base: 0x00000000 (0)
  scn_wrap: 0x0000 (0)

Block 1 reference information:
  hdr_base: 0xA0DCE449 (2698830921)
  hdr_wrap: 0x0012 (18)

Current block CSC information:
  csc_base: 0xA0D783C4 (2698478532)
  csc_wrap: 0x0012 (18)

Calculated values:
  blkcsc: 80007889860 (0x00000012A0D783C4)
  blkscn: 0 (0x0000000000000000)

blkscn < blkcsc, SCN repair required.

New SCN values to write:
  new_scn_base: 0xA0DCE448 (2698830920)
  new_scn_wrap: 0x0012 (18)

Confirm SCN repair operations:
File: H:\TEMP\SYSTEM01.DBF
Block: 241
Operations:
  1. Write new scn_base (0xA0DCE448)
  2. Write new scn_wrap (0x0012)

Confirm? (Y/YES to proceed): y

[Undo information saved - use 'undo' command to restore original values]

Verification after SCN repair:
1. scn_base: 48E4DCA0 (expected: 48E4DCA0)
2. scn_wrap: 1200 (expected: 1200)
3. seq_kcbh: 0x01 OK

Block 241 SCN repair completed successfully.
Execute tailchk apply and sum apply for this block.

OBET> tailchk apply

Confirm applying tailchk:
File: H:\TEMP\SYSTEM01.DBF
Block: 241
Offset in block: 8188 (file offset: 0x001E3FFC)
Original value: 0x01060000
New value:      0x010648E4
Confirm? (Y/YES to proceed): y
Verification successful: Stored tailchk matches calculated value (0x010648E4).
Tailchk applied successfully.

OBET> sum apply

Confirm applying checksum:
File: H:\TEMP\SYSTEM01.DBF
Block: 241
Offset in block: 16 (file offset: 0x001E2010)
Original value: 0xAD0F
New value:      0x63AF
Confirm? (Y/YES to proceed): y
Verification successful: Stored checksum matches calculated value (0x63AF).
Checksum applied successfully.

dbv验证该错误已经修复

C:\Users\XFF>dbv file=H:\TEMP\SYSTEM01.DBF

DBVERIFY: Release 11.2.0.4.0 - Production on 星期日 2月 8 11:11:12 2026

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

DBVERIFY - 开始验证: FILE = H:\TEMP\SYSTEM01.DBF


DBVERIFY - 验证完成

检查的页总数: 325120
处理的页总数 (数据): 99921
失败的页总数 (数据): 0
处理的页总数 (索引): 34013
失败的页总数 (索引): 0
处理的页总数 (其他): 174241
处理的总页数 (段)  : 1
失败的总页数 (段)  : 0
空的页总数: 16945
标记为损坏的总页数: 0
流入的页总数: 0
加密的总页数        : 0
最高块 SCN            : 2698836688 (18.2698836688)

obet工具下载地址:obet下载
obet工具使用说明:obet使用说明

发表在 小工具 | 标签为 , , | 留下评论