联系：手机/微信(+86 17813235971) QQ(107644445)
作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
业务报ORA-01578坏块,无法正常使用,alert日志报错如下
Reading datafile '/data/u01/ZLDOCXML01.DBF' for corruption at rdba: 0x02efdc97 (file 11, block 3136663)
Reread (file 11, block 3136663) found same corrupt data
Wed Sep 13 19:02:04 2023
Corrupt Block Found
TSN = 10, TSNAME = ZLDOCXML
RFN = 11, BLK = 3136663, RDBA = 49274007
OBJN = 73646, OBJD = 73646, OBJECT = SYS_LOB0000073645C00029$$, SUBOBJECT =
SEGMENT OWNER = ZLDOC, SEGMENT TYPE = Lob Segment
DDE: Problem Key 'ORA 1578' was completely flood controlled (0x6)
Further messages for this problem key will be suppressed for up to 10 minutes
通过dbv检查数据文件,发现只有这一个坏块
[oracle@zlemr ~]$ dbv file=/data/u01/ZLDOCXML01.DBF DBVERIFY: Release 11.2.0.1.0 - Production on Wed Sep 13 17:51:03 2023 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. DBVERIFY - Verification starting : FILE = /data/u01/ZLDOCXML01.DBF Page 3136663 is influx - most likely media corrupt Corrupt block relative dba: 0x02efdc97 (file 11, block 3136663) Fractured block found during dbv: Data in bad block: type: 40 format: 2 rdba: 0x02efdc97 last change scn: 0x0002.1065d622 seq: 0x2 flg: 0x04 spare1: 0x0 spare2: 0x0 spare3: 0x0 consistency value in tail: 0x00000001 check value in block header: 0x48cf computed block checksum: 0xfe21 DBVERIFY - Verification complete Total Pages Examined : 3289600 Total Pages Processed (Data) : 0 Total Pages Failing (Data) : 0 Total Pages Processed (Index): 21037 Total Pages Failing (Index): 0 Total Pages Processed (Lob) : 2051270 Total Pages Failing (Lob) : 0 Total Pages Processed (Other): 1068900 Total Pages Processed (Seg) : 0 Total Pages Failing (Seg) : 0 Total Pages Empty : 148392 Total Pages Marked Corrupt : 1 Total Pages Influx : 1 Total Pages Encrypted : 0 Highest block SCN : 278716397 (2.278716397)
通过bbed进入进行修复
[oracle@zlemr ~]$ bbed
Password:
BBED: Release 2.0.0.0.0 - Limited Production on Wed Sep 13 19:05:53 2023
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
************* !!! For Oracle Internal Use only !!! ***************
BBED> set filename '/data/u01/ZLDOCXML01.DBF'
FILENAME /data/u01/ZLDOCXML01.DBF
BBED> set block 3136663
BLOCK# 3136663
BBED> verify
DBVERIFY - Verification starting
FILE = /data/u01/ZLDOCXML01.DBF
BLOCK = 3136663
Block 3136663 is corrupt
Corrupt block relative dba: 0x02efdc97 (file 0, block 3136663)
Fractured block found during verification
Data in bad block:
type: 40 format: 2 rdba: 0x02efdc97
last change scn: 0x0002.1065d622 seq: 0x2 flg: 0x04
spare1: 0x0 spare2: 0x0 spare3: 0x0
consistency value in tail: 0x00000001
check value in block header: 0x48cf
computed block checksum: 0xfe21
DBVERIFY - Verification complete
Total Blocks Examined : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing (Index): 0
Total Blocks Empty : 0
Total Blocks Marked Corrupt : 1
Total Blocks Influx : 2
Message 531 not found; product=RDBMS; facility=BBED
BBED> map
File: /data/u01/ZLDOCXML01.DBF (0)
Block: 3136663 Dba:0x00000000
------------------------------------------------------------
BBED-00400: invalid blocktype (40)
BBED> d
File: /data/u01/ZLDOCXML01.DBF (0)
Block: 3136663 Offsets: 0 to 511 Dba:0x00000000
------------------------------------------------------------------------
28a20000 97dcef02 22d66510 02000204 cf480000 ae1f0100 00000001 00000280
93840000 00000000 00000000 00000000 80dcef02 00000000 000d000a 005b4e3b
6cbb533b 5e0867e5 623f8bb0 5f55005d 000d000a 4e3b6cbb 533b5e08 67e5623f
8bb05f55 00320030 00320033 002d0030 0039002d 00310033 00200030 0039003a
00310036 000d000a 4eca65e5 968f9ec4 4e1d51e4 4e3b6cbb 533b5e08 67e5623f
002c60a3 80058bc9 65e08179 75dbff0c 65e053d1 70ed3001 754f5bd2 ff0c65e0
59346655 30015934 75db3001 773c82b1 ff0c65e0 9f3b585e 30016d41 6d953001
54bd75db 300154b3 55fd3001 54b375f0 ff0c65e0 60765fc3 30015455 5410ff0c
65e080f8 95f73001 5fc360b8 3001547c 543856f0 96beff0c 65e05c3f 98913001
5c3f6025 30015c3f 75dbff0c 65e08179 6cfb7b49 4e0d9002 ff0c7cbe 795e3001
98df6b32 30017761 772053ef ff0c5927 5c0f4fbf 6b635e38 300267e5 4f53ff1a
751f547d 5f816b63 5e38ff0c 54bd65e0 51458840 ff0c6241 68434f53 65e080bf
5927ff0c 53cc4fa7 4e73623f 4e0d80c0 ff0c4e73 6c415206 6ccc591a ff0c672a
89e653ca 786c7ed3 ff0c5fc3 80ba672a 89c1660e 663e5f02 5e38ff0c 81798f6f
ff0c8179 90e8538b 75dbff0c 65e053cd 8df375db ff0c80a0 9e2397f3 6b635e38
30028f85 52a968c0 67e5ff1a 767d5e26 5e3889c4 ff1a767d 7ec680de 0020002b
<32 bytes per line>
BBED> set offset 8188
OFFSET 8188
BBED> d
File: /data/u01/ZLDOCXML01.DBF (0)
Block: 3136663 Offsets: 8188 to 8191 Dba:0x00000000
------------------------------------------------------------------------
01000000
<32 bytes per line>
BBED> set count 32
COUNT 32
BBED> set mode edit
MODE Edit
BBED> d
File: /data/u01/ZLDOCXML01.DBF (0)
Block: 3136663 Offsets: 14 to 45 Dba:0x00000000
------------------------------------------------------------------------
0204cf48 0000ae1f 01000000 00010000 02809384 00000000 00000000 00000000
<32 bytes per line>
BBED> set offset 8188
OFFSET 8188
BBED> m /x 022822d6
File: /data/u01/ZLDOCXML01.DBF (0)
Block: 3136663 Offsets: 8188 to 8191 Dba:0x00000000
------------------------------------------------------------------------
022822d6
<32 bytes per line>
BBED> sum apply
Check value for File 0, Block 3136663:
current = 0x48cf, required = 0x48cf
BBED> verify
DBVERIFY - Verification starting
FILE = /data/u01/ZLDOCXML01.DBF
BLOCK = 3136663
DBVERIFY - Verification complete
Total Blocks Examined : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing (Index): 0
Total Blocks Empty : 0
Total Blocks Marked Corrupt : 0
Total Blocks Influx : 0
Message 531 not found; product=RDBMS; facility=BBED
dbv检测文件正常
[oracle@zlemr ~]$ dbv file=/data/u01/ZLDOCXML01.DBF DBVERIFY: Release 11.2.0.1.0 - Production on Wed Sep 13 19:17:21 2023 Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved. DBVERIFY - Verification starting : FILE = /data/u01/ZLDOCXML01.DBF DBVERIFY - Verification complete Total Pages Examined : 3289600 Total Pages Processed (Data) : 0 Total Pages Failing (Data) : 0 Total Pages Processed (Index): 21037 Total Pages Failing (Index): 0 Total Pages Processed (Lob) : 2051586 Total Pages Failing (Lob) : 0 Total Pages Processed (Other): 1069031 Total Pages Processed (Seg) : 0 Total Pages Failing (Seg) : 0 Total Pages Empty : 147946 Total Pages Marked Corrupt : 0 Total Pages Influx : 0 Total Pages Encrypted : 0 Highest block SCN : 278849105 (2.278849105)
业务测试正常,数据完美恢复