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最近发表
- ORA-00600: internal error code, arguments: [16703], [1403], [4] 原因
- 最近遇到几起ORA-600 16703故障(tab$被清空),请引起重视
- ORA-600 2662快速恢复之Patch scn工具
- TNS-12518: TNS:listener could not hand off client connection
- ora.storage无法启动报ORA-12514故障处理
- 断电引起文件scn异常数据库恢复
- ORA-16188: LOG_ARCHIVE_CONFIG settings inconsistent with previously started instance
- .[hudsonL@cock.li].mkp勒索加密数据库完美恢复
- 模拟带库实现rman远程备份
- 又一例:ORA-600 kclchkblk_4和2662故障
- Oracle误删除数据文件恢复
- Oracle 19C 备库DML重定向—DML Redirection
- ORA-01595/ORA-600 4194处理
- 从ORA-00283 ORA-16433报错开始恢复
- 近期又遇到ORA-600 16703和ORA-702故障
- RECOVER_YOUR_DATA勒索恢复
- ORA-01033: ORACLE initialization or shutdown in progress 故障处理
- Oracle 19c/21c最新patch信息-202401
- 存储故障,强制拉库报ORA-600 kcbzib_kcrsds_1处理
- ORA-600 kcrf_resilver_log_1故障处理
标签归档:segment header ORA-1578
segment header异常对象删除处理
对于某些极端情况下,segment header出现损坏的对象该如何处理,这里通过一个实验来说明这类情况该如何处理,创建表并查询相关segment信息
SQL> create tablespace t_xff datafile '/u01/app/oracle/oradata/orcl/t_xifenfei01.dbf' size 128M autoextend on; Tablespace created. SQL> create table t_xifenfei tablespace t_xff as select * from dba_objects; Table created. SQL> select header_file,header_block from dba_SEGMENTS where segment_name='T_XIFENFEI' and owner='SYS'; HEADER_FILE HEADER_BLOCK ----------- ------------ 5 130 ----segment header 为 file 5,block 130 SQL> select EXTENT_ID , FILE_ID ,BLOCK_ID from dba_extents where segment_name='T_XIFENFEI' and owner='SYS'; EXTENT_ID FILE_ID BLOCK_ID ---------- ---------- ---------- 0 5 128 1 5 136 2 5 144 3 5 152 4 5 160 5 5 168 6 5 176 7 5 184 8 5 192 9 5 200 10 5 208 11 5 216 12 5 224 13 5 232 14 5 240 15 5 248 16 5 256 17 5 384 18 5 512 19 5 640 20 5 768 21 5 896 22 5 1024 23 5 1152 24 5 1280 25 rows selected. ---有25个extent信息 SQL> select * from dba_free_space where file_id=5; TABLESPACE_NAME FILE_ID BLOCK_ID BYTES BLOCKS ------------------------------ ---------- ---------- ---------- ---------- RELATIVE_FNO ------------ T_XFF 5 1408 122683392 14976 5 --空闲block是从1408开始
模拟segment header损坏(通过dd破坏block)
SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> SQL> SQL> SQL> exit Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@xifenfei ~]$ [oracle@xifenfei ~]$ [oracle@xifenfei ~]$echo xifenfei.com|dd of=/u01/app/oracle/oradata/orcl/t_xifenfei01.dbf bs=8192 conv=notrunc seek=130 0+1 records in 0+1 records out 17 bytes (17 B) copied, 5.4389e-05 s, 313 kB/s [oracle@xifenfei ~]$ dbv file=/u01/app/oracle/oradata/orcl/t_xifenfei01.dbf DBVERIFY: Release 11.2.0.4.0 - Production on Wed Apr 13 20:29:41 2022 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/orcl/t_xifenfei01.dbf Page 130 is marked corrupt Corrupt block relative dba: 0x01400082 (file 5, block 130) Bad header found during dbv: Data in bad block: type: 119 format: 7 rdba: 0x65666978 last change scn: 0x632e.6965666e seq: 0x6f flg: 0x6d spare1: 0x77 spare2: 0x2e spare3: 0x0 consistency value in tail: 0xada72301 check value in block header: 0xf30a computed block checksum: 0x5eb9 DBVERIFY - Verification complete Total Pages Examined : 16384 Total Pages Processed (Data) : 1234 Total Pages Failing (Data) : 0 Total Pages Processed (Index): 0 Total Pages Failing (Index): 0 Total Pages Processed (Other): 154 Total Pages Processed (Seg) : 0 Total Pages Failing (Seg) : 0 Total Pages Empty : 14995 Total Pages Marked Corrupt : 1 Total Pages Influx : 0 Total Pages Encrypted : 0 Highest block SCN : 6466979 (0.6466979)
查询表数据报错
[oracle@xifenfei ~]$ sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Wed Apr 13 20:29:48 2022 Copyright (c) 1982, 2013, Oracle. All rights reserved. Connected to an idle instance. SQL> startup ORACLE instance started. Total System Global Area 734892032 bytes Fixed Size 2256872 bytes Variable Size 452984856 bytes Database Buffers 276824064 bytes Redo Buffers 2826240 bytes Database mounted. Database opened. SQL> select count(1) from t_xifenfei; select count(1) from t_xifenfei * ERROR at line 1: ORA-01578: ORACLE data block corrupted (file # 5, block # 130) ORA-01110: data file 5: '/u01/app/oracle/oradata/orcl/t_xifenfei01.dbf'
查询extent信息为空
SQL> select EXTENT_ID , FILE_ID ,BLOCK_ID from dba_extents where segment_name='T_XIFENFEI' and owner='SYS'; no rows selected SQL> select header_file,header_block from dba_SEGMENTS where segment_name='T_XIFENFEI' and owner='SYS'; HEADER_FILE HEADER_BLOCK ----------- ------------ 5 130 SQL> select * from dba_free_space where file_id=5; TABLESPACE_NAME FILE_ID BLOCK_ID BYTES BLOCKS ------------------------------ ---------- ---------- ---------- ---------- RELATIVE_FNO ------------ T_XFF 5 1408 122683392 14976 5
尝试删除表报错
SQL> drop table t_xifenfei; drop table t_xifenfei * ERROR at line 1: ORA-01578: ORACLE data block corrupted (file # 5, block # 130) ORA-01110: data file 5: '/u01/app/oracle/oradata/orcl/t_xifenfei01.dbf'
通过加purge删除成功
SQL> drop table t_xifenfei purge; Table dropped.
删除表成功,但是磁盘空间未释放,通过查询确认变为一个临时段
SQL> select * from dba_free_space where file_id=5; TABLESPACE_NAME FILE_ID BLOCK_ID BYTES BLOCKS ------------------------------ ---------- ---------- ---------- ---------- RELATIVE_FNO ------------ T_XFF 5 1408 122683392 14976 5 SQL> select segment_name,segment_type,owner from dba_segments where header_file=5; SEGMENT_NAME -------------------------------------------------------------------------------- SEGMENT_TYPE OWNER ------------------ ------------------------------ 5.130 TEMPORARY SYS
清理临时段,彻底删除segment header异常对象删除后遗症
SQL> exec dbms_space_admin.segment_corrupt('T_XFF',5,130); PL/SQL procedure successfully completed. SQL> exec dbms_space_admin.segment_drop_corrupt('T_XFF',5,130); PL/SQL procedure successfully completed. SQL> exec DBMS_SPACE_ADMIN.TABLESPACE_REBUILD_BITMAPS ('T_XFF'); PL/SQL procedure successfully completed. SQL> select segment_name,segment_type,owner from dba_segments where header_file=5; no rows selected SQL> select * from dba_free_space where file_id=5; TABLESPACE_NAME FILE_ID BLOCK_ID BYTES BLOCKS ------------------------------ ---------- ---------- ---------- ---------- RELATIVE_FNO ------------ T_XFF 5 128 133169152 16256 5