How use raw device in linux?

Hi all.
scene:
oracle 8.1.6.1
Linux red hat 6.1
I'm trying to create a database with raw device.
In HPux the raw device is /dev/rdsk but I found no documentation for linux raw device.
thanks for any help.
null

Prove it: try to create file large than 2Gb on 8.1.6 under Linux (under NT it works) and try to use raw partitions. About Pmon ORA-601 simply check Metalink.
I know Oracle, it is my work. I like Oracle database. I think, Linux is the best OS. But i want Oracle to solve current bugs more quickly, for a customers could not say "Oracle on Linux - it ***** ". Because, customers must to know about problems to avoid it. It is a more biger problem, when database is crashed.

Similar Messages

  • How can i use raw device in oracle 9.2.0.4

    can i use "create tablespace XXX datafile '/dev/raw1' ..." to use raw device for tablespace? Or i should use "ln -s /dev/raw1 /oradata/xxx.dbf"?
    does raw device as same as "xxx.dbf" is limited 4GB ?
    pool english.

    hi,
    as far as windows NT OS is concerned,,there's a utility (OCOPY) to store ur datafiles on to raw devices,,,but u cant directly access that datafiles for runtime databases,,its just for backup purposes..
    umar

  • Create tablespace using RAW device

    Hi,
    When you create the tablespace using RAW device, you no need to specify the size parameter in the sql. It works in Solaris but not in Linux.
    I dont know why, can anyone experience this issue before? please let me know
    Thanks
    Veera

    My advice for you would be to always include SIZE parameter when you create tablespace, redo log file on raw device.
    Best Regards
    Krystian Zieja / mob

  • Rename dafile while using RAW device.

    HI,
    How to rename a datafile in raw devices.
    Thanks

    Since 'data file = raw device' when using raw devices, it begs the question ... what are you trying to accomplish?
    There may be OS, OS Version and DB Version dependencies to think about. Please provide that info as well.

  • Raw devices under Linux 2.4.x

    Hi.
    Does Oracle 8.1.7 support raw devices under linux 2.4.x? Is there some documentation? What advantages/disadvantages? Is it worth moving from ext2 to raw?

    <BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Andrij Korud ([email protected]):
    Hi.
    Does Oracle 8.1.7 support raw devices under linux 2.4.x? Is there some documentation? What advantages/disadvantages? Is it worth moving from ext2 to raw?<HR></BLOCKQUOTE>
    Oracle does fully support raw devices. For a mini cookbook, search on "raw device". I've put up a mini story on how to make raw redologs.

  • Using raw device

    Good morning,
    I would like to make some i/o test with a database version 10g, actually I have the redo log on standard zfs filesystem (cooked), I would like to
    migrate this redo log on raw device without recreating the database, is this possible ?
    Thanks for your help
    Fabrice Chapuis

    One more question, in case of node failure , redo on raw device are more critical for a recover than if they were on a filesystem ?More critical? Or more difficult?
    Redo is critical, period. Does not matter whether you use a cooked file system or a raw device.
    As for difficulty - that depends on what you are attempting to do. If you want to treat the raw device as a file system, that will be difficult as it it not a file system. (which kind of begs the question as to treat it like a file system when it is not?)
    From a RMAN perspective - a device is a device. RMAN does not care.
    From a DB perspective - that is why ASM exist. To remove the complexities of using raw devices, and eliminate the requirement of needing to use an external Volume Manager. And provide the DBA with a familiar SQL*Plus interface and SQL commands to administer ASM.
    It may seem difficult at first - but anything that needs a learning curve to go through, tends to seem difficult in the beginning. All you need to do is learn the basics and grasp the concepts.. and that +"difficulty"+ disappears.

  • Advantage of using RAW devices for storing database

    Hi,
    Marry Christmas to all.
    Oracle 10g version 10.2.0.1.0 (rac)
    OS : HP-UX 11i
    I am new to this enviornment. We are using raw devices for storig the database.
    Please tell what are the advantages for using raw devices for storing the database?
    Thanks.

    http://www.fors.com/orasupp/unix/37914_1.HTM
    The above link explains the raw devices and advantages.

  • Create the raw devices under Linux

    Hi,
    Hoe can I create the raw devices under Linux?

    Hi,
    I just have created two raw devices,
    1, /etc/sysconfig/rawdevices
    /dev/raw/raw1 /dev/hda2
    /dev/raw/raw2 /dev/hda3
    2, chown oracle:dba /dev/raw/rawN and chmod 660 /dev/raw/rawN
    3, after restart the machine, start I runInstaller again.
    But Oracle can still not find the candidate disks, even after give the path /dev/raw
    Why?

  • CREATING RAW DEVICE IN LINUX

    HI ALL,
    in redhat linux 5 how to format the disk(ex: /opt,/u01,.....) and make it as raw device for ASM installation

    DSP_863977 wrote:
    HI ALL,
    in redhat linux 5 how to format the disk(ex: /opt,/u01,.....) and make it as raw device for ASM installationit is not possible to change a mount /opt or /u01 for ASM storage.
    for learning purpose you can learn with vmware server to create a raw device to configure/install ASM.
    Refer the link:- shared storage part for linux5/rhel5
    http://oracleinstance.blogspot.com/2010/03/oracle-10g-installation-in-linux-5.html
    for more information refer the link:-
    http://download.oracle.com/docs/cd/B28359_01/server.111/b31107/asmprepare.htm

  • Checking Raw devices on Linux box

    How i can check raw device configured on Linux box?
    Like System admin configured dev/raw/raw1 and dev/raw/raw2
    how i can check this? With df command i am not seeing this...

    Is it Ok for RAC or not
    [oracle@test1 ~]$ sudo raw -qa
    /dev/raw/raw1: bound to major 8, minor 1
    /dev/raw/raw2: bound to major 8, minor 2
    /dev/raw/raw3: bound to major 8, minor 3
    [oracle@test2 ~]$ sudo raw -qa
    /dev/raw/raw1: bound to major 8, minor 49
    /dev/raw/raw2: bound to major 8, minor 50
    /dev/raw/raw3: bound to major 8, minor 51

  • Tablespace creation problem in RAC using raw device.

    Hi ,
    If i created a tablespace with the .dbf extension i am able to create the tablespace. on other hand if i use .dbf extension it;s failing..
    can anyone help me out why it is happening??
    here is the code...
    Oracle9i Enterprise Edition Release 9.2.0.8.0 - Production
    With the Partitioning, Real Application Clusters, OLAP and Oracle Data Mining options
    JServer Release 9.2.0.8.0 - Production
    SYS at terac >
    SYS at terac >CREATE TABLESPACE FLOW_1 DATAFILE
    2 '\\.\FLOW_1' SIZE 10304 K REUSE AUTOEXTEND OFF
    3 EXTENT MANAGEMENT LOCAL AUTOALLOCATE SEGMENT SPACE MANAGEMENT AUTO
    4
    SYS at terac >/
    Tablespace created.
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    CREATE TABLESPACE TEST2 DATAFILE '\\.\FLOW_1.DBF' SIZE 10304 K
    REUSE AUTOEXTEND OFF EXTENT MANAGEMENT LOCAL AUTOALLOCATE SEGMENT
    SPACE MANAGEMENT AUTO
    SYS at TERAC >/
    CREATE TABLESPACE TEST2 DATAFILE '\\.\FLOW_1.DBF' SIZE 10304 K
    ERROR at line 1:
    ORA-01119: error in creating database file '\\.\FLOW_1.DBF'
    ORA-27040: skgfrcre: create error, unable to create file
    OSD-04002: unable to open file
    O/S-Error: (OS 2) The system cannot find the file specified.
    thanks
    james.

    I'm by no means a windows expert so I might be totally wrong here, but here goes.
    You have to refer to the raw device by its name in the datafile clause. If you use a different name then the o/s can't find the device. Simple as that.

  • VISA do not find RAW device in linux??

    Hy. I have usb device with product ID and vendor ID. My operational system is Linux Fedora. Linux system find my device,but Labview (VISA) do not find this device.Can somebody tell my, where is the problem??

    Hello qwqwqw,
    Dennis is correct, and that is the document you want to reference.  Specifically, Part 4 is about USB on Linux and Mac.  Officially though, National Instruments does not offer email or phone support for Linux Fedora.
    Good luck with your application!
    Meghan
    Applications Engineer

  • Content Server 6.40 on Raw Devices

    Hi Folks!
    We'd like to install a Content Server 6.40 using raw devices (on Linux Suse SLES9).
    Do we need to install the MaxDB, if we use raw devices? At this point the InstGuide does not give a clear description of what to do. It looks we can use the raw devices directly without having a database instance. Is this right?
    Is there any disadvantage compared to using the access via file system and DB?
    Any hint is appreciated...
    Best regards
    Torsten

    Hi Torsten,
    As far as i know SAP Content Server use MaxDB or a File System, I have use it with MaxDB with good results, anyhow.... read the following for details,
    http://help.sap.com/saphelp_nw04s/helpdata/en/40/32104211625933e10000000a155106/content.htm
    Regards
    Juan
    Please reward with points if helpdul

  • How to check space on asm and raw device?

    Hi All,
    I want to know how to check the space on asm device.
    we are using asm device which is on raw partition.
    Our archive gets full.I need to check the space on asm archve partiotion.
    how can i check the archive destination space?
    we are using raw device partition for crs and voting device.
    how can we check the space on raw device and how can we know which device is in use and which are not in use
    Thanks in advance

    4 - 5 raw partitions...
    What oracle version?
    Install OCR + VOTE in raw device better than OCFS2. if you use 10g to 11gR1.
    If use 11gR2,keep OCR + VOTE in ASM Disk Group.
    you can check which raw device OCR:
    $ ocrcheck
    VOTEDISK:
    $ crsctl query css votedisk
    On 10g if use raw device for OCR + votedisk: recommend 1 file = 250M
    11g recommend 1 file = 512M
    Good Luck

  • How to create DIR/File on a raw device in RAC environment.

    Hi all,
    I use a shell script to create DIR and File on a raw device also it creates schema and tablespaces.
    I am facing problem in creating DIR and Files on raw device.
    One more thing, can multiple tablespaces be created on a raw device.
    Thanks & regards,
    Sanjeev

    Thanks for the response. Please help me further.
    About the Script - It asks for the path for creating DIR and uses shell command to create DIR. Later same path and DIR name is used to create Oracle DIR. Now in place of absolute path raw device name is passed. The same script is also used for creating tablespaces and schema.
    There is second script that is .sql script that creates external table in the newly created schema. All this has been working fine on single instance Oracle server. we have tested many times but fails in RAC environment when we use raw device.
    Question is - If I use filesystem will the external table's flat files and Directories be accessible to all the instances.
    I have one application written in java that would be clustered and running on these oracle servers. This application would be accessing those external tables and their flat files. Will there be a problem accessing these flat files accross the instances.
    Regards,
    Sanjeev.

Maybe you are looking for

  • Purchase on behalf of other company

    Hi Gurus, I need suggestion. Biz scenario: Company 1000, purchasing org 1000, plant 1000 Company 2000, purchasing org 2000, plant 2000 External Vendor Company 1000 raise order to Company 2000. Company 2000 raise order to External Vendor. External Ven

  • "save as" or modify feature, to see new/modified file through android file managers?

    adobe reader does not have the functionality i want, and i'm checking to see if anyone knows if "Adobe CreatePDF" has it. i'm on a motorola xoom w/ ice (4.1.1) with a file manager, i created a directory "Files" on the sdcard0 (along with all the othe

  • Email settings in J4580 All-In-One Solution Center

    Hi there, For some time i use my all-in-one J4580 printer with the Windows Vista application on my computer. But recently i change and did run an upgrade to the Windows 7 application and everything did goes verry well without any problems accept for

  • File Conversions with API...!

    Hi guys...! I'm searching for a file conversion product that comes with an API, which will enable programmers or developers to integrate it in their program. The product must be able to convert PDF, HTML, Excel, Access, Power Point, and Word into a t

  • Discoverer  link on  oracle apps  R12 launch worksheet list?

    the discoverer link on oracle apps R12 launch worksheet list instead of query progress page? the function form is as follows mode=DISCO&workbook=ALL_STAFF_DATA And can expalain to me how to fill this parameters in case where the woorkbook is containi