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Oracle Redo Log Corruption

  • Block corruption in redo log file blocks.  Can be a logical or a physical corruption
  • Invalid block in redo log 
  • ORA-353 log corruption near block %s change %s time %s
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Oracle Logical Block Corruption

This is when the block contains a valid checksum and the structure below the block header is corrupt (Block content is corrupt). It may cause different ORA-600 errors. 
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Oracle Physical Block Corruption

Detected in Block read or proactively detected by Tools (rman,dbv).
 
Normally reported with error ORA-1578 and the detailed corruption description is printed in the alert log.  
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