RE: Block corruption notes on MetaLink

From: Gudmundur Josepsson <gbj_at_index.is>
Date: Wed, 3 Mar 2004 16:50:43 GMT
Message-Id: <200403031650.i23Goh700751@smtp.mmedia.is>

Dennis,

We're using RMAN to back up. The error message we get is:

***
Corrupt block relative dba: 0x07c07e10 (file 31, block 32272) Bad check value found during backing up datafile Data in bad block -
type: 27 format: 2 rdba: 0x07c07e10
last change scn: 0x0000.da925d20 seq: 0x2 flg: 0x04 consistency value in tail: 0x5d201b02
check value in block header: 0xe344, computed block checksum: 0x400 spare1: 0x0, spare2: 0x0, spare3: 0x0
***
Reread of blocknum=32272, file=E:\ORADATA\AGR53\AGRSTATIC07.DBF. found same corrupt data

I just discovered that we're also receiving this during non-backup operations:

***
Corrupt block relative dba: 0x0b401620 (file 45, block 5664) Bad check value found during buffer read Data in bad block -
type: 6 format: 2 rdba: 0x0b401620
last change scn: 0x0000.daa7b068 seq: 0x2 flg: 0x04 consistency value in tail: 0xb0680602
check value in block header: 0x1675, computed block checksum: 0x400 spare1: 0x0, spare2: 0x0, spare3: 0x0
***
Reread of rdba: 0x0b401620 (file 45, block 5664) found same corrupted data

Gudmundur

> Gudundur - How are you backing up the datafile? What is producing the error
> - Oracle? Do you receive an error message? If so, please post.
>
> Dennis Williams
> DBA
> Lifetouch, Inc.
> dwilliams_at_lifetouch.com
>
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org
> [mailto:oracle-l-bounce_at_freelists.org]On
> Behalf Of Gudmundur Bjarni
> Josepsson
> Sent: Wednesday, March 03, 2004 7:48 AM
> To: oracle-l_at_freelists.org
> Subject: Block corruption notes on MetaLink
>
>
> List,
>
> We're receiving:
>
> Bad check value found during backing up datafile
> Data in bad block -
>
> in the alert log. I can't find any notes about this exact error on
> MetaLink. Any pointers?
>
> Thanks,
> Gudmundur
>
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Received on Wed Mar 03 2004 - 10:50:08 CST