topic Re: Performance issue. in Application Development and Automation Discussions

Performance issue.

Former Member — Tue, 22 Apr 2008 06:40:10 GMT

Performance is very slow in standard transaction MB51,

Particularly in this query!

select (g_t_fields)

into corresponding fields of table itab

from mkpf inner join mseg

on mkpf_{mandt = mseg}mandt

and mkpf_{mblnr = mseg}mblnr

and mkpf_{mjahr = mseg}mjahr

WHERE MKPF~BUDAT in BUDAT

and MSEG~BWART in BWART

and MSEG~CHARG in CHARG

and MSEG~KUNNR in KUNNR

and MSEG~LGORT in LGORT

and MSEG~LIFNR in LIFNR

and MSEG~MATNR in MATNR

and MSEG~SOBKZ in SOBKZ

and MKPF~USNAM in USNAM

and MKPF~VGART in VGART

and MSEG~WERKS in WERKS

and MKPF~XBLNR in XBLNR

I referred a OSS note 357187 and according to that, i unchecked some fields in the view mentioned in that. But still performance is very slow. it is taking 20 mints to give output.

Please help me! Its very urgent

Re: Performance issue.

Former Member — Tue, 22 Apr 2008 09:20:06 GMT

The problem is that the index is not used because more fields are selected...

A good solution can be found here, but for the transaction MB51, it would mean that you have to change standard SAP:

[http://www.sap-img.com/abap/select-statement-with-inner-join-is-taking-forever.htm|http://www.sap-img.com/abap/select-statement-with-inner-join-is-taking-forever.htm]

MB51 only run fast if you only use the fields in the indexes...

Re: Performance issue.

Former Member — Tue, 22 Apr 2008 09:22:47 GMT

remove into corresponding fields addition...and try to give the field names in select statement in order of database table.

Reward if useful.

Dara.

Re: Performance issue.

Former Member — Tue, 22 Apr 2008 09:25:47 GMT

Change the order of fields in where condition ..

select (g_t_fields)

into corresponding fields of table itab

from mkpf inner join mseg

on mkpf_{mandt = mseg}mandt

and mkpf_{mblnr = mseg}mblnr

and mkpf_{mjahr = mseg}mjahr

WHERE MKPF~BUDAT in BUDAT

and MKPF~USNAM in USNAM

and MKPF~VGART in VGART

and MKPF~XBLNR in XBLNR

and MSEG~BWART in BWART

and MSEG~CHARG in CHARG

and MSEG~KUNNR in KUNNR

and MSEG~LGORT in LGORT

and MSEG~LIFNR in LIFNR

and MSEG~MATNR in MATNR

and MSEG~SOBKZ in SOBKZ

and MSEG~WERKS in WERKS.

Re: Performance issue.

Former Member — Tue, 22 Apr 2008 09:27:36 GMT

hi ,

it is always better not to use the into corresponding fiields and please use the all primary secondary indexes to improve performance..if you forgot a single key it will effect more in the performance..

regards,

venkat.

Re: Performance issue.

former_member251078 — Wed, 23 Apr 2008 12:19:16 GMT

Hello,

Please create histograms for tables MKPF and MSEG tables as mentioned in SAP Notes 902675 and 921164.

Hope this helps

Regards

Dileep