Oracle GoldenGate Best Practice: NFS Mount options for use with GoldenGate
(Doc ID 1232303.1)
Last updated on SEPTEMBER 19, 2022
Applies to:Oracle GoldenGate - Version 184.108.40.206.0 and later
Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 12.2]
Information in this document applies to any platform.
The purpose of this bulletin is to document the file system mount options to use when configuring GoldenGate to run with NFS mounted file system.
Unless IO buffering is OFF, then NFS mounts should not be used when running any Oracle GoldenGate processes. A danger occurs when one process registers the end of a trail file or transaction log and moves on to the next in sequence and after this event data in the NFS IO buffer gets flushed to disk. The net result is skipped data and this cannot be compensated for with GoldenGate parameter EOFDELAY.
When using NFS mounted file system with Oracle GoldenGate files, the setting for file system caching or buffered IO must be disabled on both NFS client and server.
This document is relevant to all environments using Oracle GoldenGate.
The important factor to consider when configuring Oracle GoldenGate processes to run on NFS mounted file system is to make sure that buffered IO (data and attribute caching) is always set to OFF on both NFS client and server.
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