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ASM and Direct/buffered I/O

in Database Administration (MOSC) 3 commentsAnswered

Hello all,

We are moving to ASM. As per one Oracle document -

"FILESYSTEMIO_OPTIONS controls the behaviour of I/O options given by operating system but it has no affect when ASM is used. "

Does ASM default to direct I/O or OS buffered I/O? Usually FILESYSTEMIO_OPTIONS is used to control this. Is ASM, how does it work?

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