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ORA-1578 Misplaced blocks on LINUX against datafiles stored in NFS filers (Doc ID 1923358.1)

Last updated on AUGUST 01, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2 to 12.1]
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 on LINUX.  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: 0x25407478 (rfile#=149, block#=29816) was overwritten with the content of rdba:  0x23c74e36 (rfile#=143 block#=478774)





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