AIX on Power System: Low-speed Write On An ACFS Volume
Last updated on NOVEMBER 14, 2016
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 11.2 to 12.1]
IBM AIX on POWER Systems (64-bit)
You are using Oracle RAC 11gR2 on AIX 7.1 and have a diskgroup ACFS, ACFS volume enabled and an ACFS mounted filesystem for rman external tables files (large files).
The ACFS volume works correctly but is having a poor write speed.
Also, Legato is being used as the backup tool.
Ensure that Virtual memory (VMM) is tuned per the IBM recommendations.
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