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Oracle® Database Reference
12c Release 1 (12.1)

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Property Description
Parameter type Integer
Default value 4096
Modifiable No
Range of values 0 - 4096
Basic No

DNFS_BATCH_SIZE controls the number of asynchronous I/O's that can be queued by an Oracle process when Direct NFS Client is enabled. In environments where the NFS server cannot handle a large number of outstanding asynchronous I/O requests, use this parameter to limit the number of I/O's issued by an Oracle foreground process. The recommended setting for this parameter is to start at 128 and increase or decrease it based on NFS server performance.

See Also:

Oracle Database Performance Tuning Guide for additional information about the DNFS_BATCH_SIZE initialization parameter