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10g RAC and GPFS

From: Haroon A. Qureshi <haroon_a_qureshi_at_yahoo.com>
Date: Mon, 4 Dec 2006 17:14:25 -0800 (PST)
Message-ID: <20061205011425.5088.qmail@web50209.mail.yahoo.com>


hello,

i am implementing 10gR2 RAC on GPFS 3.3 and AIX 5.3 ML4. i had a question concerning asynch i/o and filesystem i/o with gpfs. i know GPFS uses direct i/o. so how should i handle the parameters? i have DISK_ASYNCH_IO set to TRUE and FILESYSTEMIO_OPTIONS set to asynch. i know that FILESYSTEMIO_OPTIONS should probably be set to SETALL. is it best to simulate asynch io using multiple db_writers (and setting DISK_AYNCH_IO to FALSE)?

any advice on these parameters with GPFS would be greatly appreciated....

thanks in advance
haroon

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Received on Mon Dec 04 2006 - 19:14:25 CST

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