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  1. #1

    Number of records supported in multi-valued attribute


    Hello friends,
    In a multi-valued attribute, the attribute supports many records.

    Thanks


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  2. #2
    ataubman's Avatar
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    Re: Number of records supported in multi-valued attribute


    I've seen thousands, but I've never heard what the actual designed limit
    is. I'll ask backstage and let you know.


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  3. #3

    Re: Number of records supported in multi-valued attribute

    On Mon, 23 Apr 2012 23:26:01 +0000, vaultuser wrote:

    > Hello friends,
    > In a multi-valued attribute, the attribute supports many records.


    I don't remember seeing any upper limit documented anywhere.

    I would guess that the value is going to be in the range of 4 billion
    (but that'll be total values in the DIB) - more if the database has been
    converted to 64-bit record identifiers.

    Jim



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  4. #4

    Re: Number of records supported in multi-valued attribute


    Any document where you found this information. Thank you.


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  5. #5

    Re: Number of records supported in multi-valued attribute

    On Tue, 24 Apr 2012 04:06:02 +0000, vaultuser wrote:

    > Any document where you found this information. Thank you.


    No public doc that I've ever seen; I used to teach the eDirectory ATT
    course, and spent a fair amount of time studying the product, including
    at the code level.

    Jim
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  6. #6

    Re: Number of records supported in multi-valued attribute


    Recomedable would have this information because in some requirements,
    customers wonder if these multivalued attributes have the ability to
    handle large volumes of information


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  7. #7

    Re: Number of records supported in multi-valued attribute

    On Tue, 24 Apr 2012 14:46:01 +0000, vaultuser wrote:

    > Recomedable would have this information because in some requirements,
    > customers wonder if these multivalued attributes have the ability to
    > handle large volumes of information


    The general answer would be yes.

    I'm no longer an employee, so I'm not in a position to formally document
    any limit - but I don't recall ever hearing about it being part of
    testing either.

    There is going to be a point at which a system index is created (25 or
    more values) to make searching the values more efficient, and dsrepair
    may complain about a large number of values at some point (but I don't
    recall what that value is, but I do remember seeing the message in
    various logs).

    But in all the years I've been dealing with eDir and NDS (since the
    release of NetWare 4.0 in 1993), I've never heard of a customer who
    exceeded the limits on the number of values in an attribute.

    Jim

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  8. #8

    Re: Number of records supported in multi-valued attribute


    According to his experience could indicate an approximate maximum number
    has been used with the record length with multi-valued attribute, thanks
    friend


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  9. #9
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    Re: Number of records supported in multi-valued attribute

    On 4/24/2012 1:36 PM, vaultuser wrote:
    >
    > According to his experience could indicate an approximate maximum number
    > has been used with the record length with multi-valued attribute, thanks
    > friend


    I have seen DSrepair report objects with 40,000+ values. Usually groups
    with large membership.

    It does work with pretty large number of values. How large are you
    thinking? Millions? Billions? thousands?

    Anything under a million I would not worry about. Over that I would
    consider testing.



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