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Database Administration
Reference : Database Startup Parameters : Alphabetical listing of database startup parameters : Buffered I/O (-r)
 
Buffered I/O (-r)
Operating system and syntax
UNIX / Windows
-r
Use with
Maximum value
Minimum value
Single-user default
Multi-user default
CC
–
–
Unbuffered I/O
Unbuffered I/O
Use Buffered I/O (-r) to enable buffered I/O to the before-image file. In most cases, avoid using this parameter because it might put database integrity at risk.
Caution: A database running with the -r parameter cannot be recovered after a system failure. If the system fails, you must restore the database from a backup and restart processing from the beginning.