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ORA-1578 Misplaced blocks against datafiles stored in NFS filers (Doc ID 1525108.1)

Last updated on FEBRUARY 13, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 7.3.0 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


ORA-1578 due to misplaced blocks.  Database Files are stored in NFS filers.  A misplaced block means that a block content was written in a different location (different file or different block) overwriting the original block.  The corruption is reported in the alert log and by dbverify with message "Bad header found":


The block is healthy (computed block checksum is 0x0) but the content belongs to a different block.  In this example rdba: 0x0b48b570 (rfile#=45, block#=570736) was overwritten with the content of rdba: 0x07078aed (rfile#=28 block#=494317).




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