Re: How to list block size?

Hello Argosy,

Normally what Oracle calls "the operating system block size" is the smallest unit of I/O supported by the operating system for raw I/O (DEV_BSIZE), but on some operating systems it is the smallest possible unit of file system based I/O. For a table showing the operating system block sizes for some of the most common operating systems please see
http://www.ixora.com.au/tips/creation/raw_log_files.htm#log_block_size.

@ Regards,
@ Steve Adams
@ http://www.ixora.com.au/
@ http://www.christianity.net.au/

-----Original Message-----
From: argosy22_at_my-deja.com

Hi all,

Some of my Oracle documentation is refering to the OS (Unix) block size.

How can I list this?

pagesize will give me what is in memory.

I could use df and df -k, and calculate.

prtvtoc will give the number of bytes per sector.

prtvtoc /dev/dsk/c0t0d0s0

* /dev/dsk/c0t0d0s0 partition map
*
* Dimensions:
*     512 bytes/sector
*     248 sectors/track
*      19 tracks/cylinder
*    4712 sectors/cylinder
*    7508 cylinders
*    7506 accessible cylinders

Is 512 the block size here?

Is there another command that I could use?

Thanks,

Argosy

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Before you buy. Received on Wed Nov 01 2000 - 20:41:28 CST