ORA-00206 ORA-00202 ORA-27072 and eventually instance crash

(Doc ID 1073745.1)

Last updated on AUGUST 25, 2017

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
***Checked for relevance on 13-Jul-2012***
***Checked for relevance on 12-Apr-2016***
***Checked for relevance on 21-Jul-2017***


The database can crash with the following errors:

ORA-00206: error in writing control file (name) block (num), # blocks (num)
ORA-00202: control file: (name)
ORA-27072: skgfdisp: I/O error
OSD-04008: WriteFile() failure, unable to write to file
O/S-Error: (OS 33) The process cannot access the file because another process has locked a portion of the file

Control files are multiplexed


No recent changes to the database.


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