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Roll Area

Former Member
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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

Accepted Solutions (0)

Answers (3)

Answers (3)

Former Member
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This message was moderated.

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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

Former Member
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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