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 188.8.131.52 to 184.108.40.206 [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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