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Oracle control file errors
Don Burleson
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During database startup, Oracle must be able to read the control
file to get the names of the data files, etc.
Because of this important requirement, all Oracle DBA staff
should place multiple copies of the controlfile, preferably on
separate disk devices.
If Oracle cannot read the control file, you may see this Oracle
controlfile error:
ORA-00204: error in reading (block string, # blocks string) of
controlfile
To always have a controlfile backup, use the ALTER DATABASE
BACKUP CONTROLFILE TO TRACE command to create a control file
recreation script in the location specified by the USER_DUMP_DEST
initialization parameter.
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