Bad block

From: Steve Baldwin <>
Date: Tue, 8 Mar 2011 07:01:27 -0600
Message-ID: <>

Hi list,

I have a situation where I'm seeing regular reports of a bad block in the alert log. For example :

Tue Mar 08 06:49:39 2011
Corrupt Block Found

         TSN = 24, TSNAME = XXX
         RFN = 28, BLK = 1827380, RDBA = 119267892
         OBJN = 95530, OBJD = 95530, OBJECT = SYS_LOB0000095529C00003$$,
         SEGMENT OWNER = XXX, SEGMENT TYPE = Lob Segment

However when I run an rman scan (validate check logical database) it is reporting everything is fine (i.e. zero bad blocks). The view V$DATABASE_BLOCK_CORRUPTION
is empty. I have tried duplicating the table (CTAS), deleting all rows and re-populating from my copy. No errors but still seeing the alert log message. I then rebuilt the Lob Segment in question with ALTER TABLE MOVE ... Again no errors but still alert log message.

How do I fix the problem as far as whatever is reporting is concerned?



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Received on Tue Mar 08 2011 - 07:01:27 CST

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