13.3. Using Raw Devices for Oracle Databases

Procedure 13.1. Configure a raw device

1. Configure the desired device in the /etc/sysconfig/rawdevices file:

   /dev/raw/raw1 	/dev/sdb1

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2. Start and enable the device by running:

   # service rawdevices start
   # chkconfig rawdevices on

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Procedure 13.2. Configure persistent ownership and permissions

1. To set specific ownership and/or permissions for the raw devices, add entries to /etc/udev/rules.d/60-raw.rules in the following format:

   ACTION=="add", KERNEL=="raw*", OWNER="root", GROUP="disk", MODE="0660"

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2. Test that the permissions you applied work as intended with udevtest:

   # udevtest /block/sdb/sdb1 | grep raw
    main: run: '/bin/raw /dev/raw/raw1 /dev/.tmp-8-17'

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   To test the ownership of a specific device, such as /dev/raw/raw1, use:

   # udevtest /class/raw/raw1 | grep mode
    udev_node_add: creating device node '/dev/raw/raw1', major = '162', minor = '1', mode = '0600', uid = '0', gid = '0'

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3. Run the following command to activate the udev rules:

   # start_udev

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