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Former Member

Roll Area

Hi,

Can we increase Roll Area.

What will be the impact by increasing it.

Can u pls tell me the procedure to increse the Roll area.

Thanks,

MK

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3 Answers

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    Former Member
    Jul 01, 2009 at 06:36 PM

    Hi,

    The roll area consists of 2 segments. The first segment, which can be set with the parameter ztta/roll_first, is assigned to the work process first as memory. If this is used up, the work process has more memory assigned to it.

    The amount of memory is determined by the difference between the parameters ztta/roll_area and ztta/roll_first

    The roll area is always the first memory that receives a work process. Only afterwards can extended memory be requested

    ztta/roll_area must be larger than, or the same size as ztta/roll_first

    By specifying a higher value for ztta/roll_area than for ztta/roll_first, you avoid allocating local private memory as soon as the set limits of the SAP extended memory are reached. The remaining roll memory therefore serves as the last buffer before a user context has to allocate heap memory.

    This pushes back the point in time at which a work process is switched to PRIV mode

    The roll area is not important with 64 bit platforms where sufficient extended memory is available

    These parameters need to be maintained in the Instance profile (tcode RZ10)

    Thanks,

    Sridhar

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  • Aug 21, 2009 at 10:16 AM

    Hi,

    Yes. Roll area is not so important where sufficnet extended memory is available.

    You can visit the page for more understanding on this.

    http://help.sap.com/saphelp_nw70/helpdata/en/02/96274f538111d1891b0000e8322f96/content.htm

    Rgds,

    Mahesh Bansal

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    Former Member
    Sep 11, 2009 at 03:04 PM

    This message was moderated.

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