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Parameter configuration of memory management

Former Member
0 Kudos

Hi all,

I receive from SAP a Analysis Check that suggest me to modify some value parameter of Memory management.

SAP suggest me:

ztta/roll_area: 3000329(current value) -> 6500000(Recommended value)

rdisp/PG_SHM: 8192(current value) -> 16384(Recommended value)

ztta/short_area: 3200000(current value) -> 4000000(Recommended value)

My request is: Can I modify these parameters with value suggest by SAP in my environment?

Is there any documentation which explain some info?

This is the information of the productive system:

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  1. machinfo

CPU info:

12 Intel(R) Itanium 2 9000 series processors (1.6 GHz, 24 MB)

533 MT/s bus, CPU version C2

18 logical processors

Memory: 65339 MB (63.81 GB)

Firmware info:

Firmware revision: 7.44

FP SWA driver revision: 1.18

IPMI is supported on this system.

Invalid combination of manageability firmware has been installed on this system.

Unable to provide accurate version information about manageability firmware

Platform info:

Model: "ia64 hp superdome server SD64B"

Machine ID number: xxxxxx

Machine serial number: xxxxxx

OS info:

Nodename: hostaddress

Release: HP-UX B.11.31

Version: U (unlimited-user license)

Machine: ia64

ID Number: xxxx

vmunix releaseversion:

@(#) $Revision: vmunix: B.11.31_LR FLAVOR=perf

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Accepted Solutions (1)

Accepted Solutions (1)

Former Member
0 Kudos

Hi,

I am sure that SAP must have recommanded these values after analysing your system. So you can anytime go for these values and what is good is....if you face any problem in future with these sets of values suggested by SAP, you can anytime escalaye back to SAP.

Please do not forget to take the backup of your Instance profile before making any change. Always adjust the values for pool 10 and pool 40 othwerwise your instance may not come up.

For more details about these parameters, please refer to below link.

http://help.sap.com/saphelp_nw04/helpdata/en/02/962acd538111d1891b0000e8322f96/frameset.htm

With Regards,

Saurabh

Answers (1)

Answers (1)

Former Member
0 Kudos

In my opinion there should not be a problem if these values are recommended by sap. But you can gradually increase them if you wish.