View cluster index affecting performance

Hi All,
We have a simple delete and insert script for a table, but the table has a dependency to 2 view cluster index, So whenever am going to insert and update the parent table it is going to update the view cluster index, But while updating the view cluster index
it runs the view cluster index again (like executing the view) hence it affect the performance.
Please advise Is there any way to skip the view execution? because this view is already a heavy operation with many logial reads..
Also advise view cluster index in simple terms because when i google I can not get a concrete answers. Since it's a index can we rebuild or reorg? forgive if my question is stupid... :)
Best Regards Moug

Hi,
There's a good review here on designing indexed views, just for your curiosity - https://technet.microsoft.com/en-us/library/ms187864%28v=sql.105%29.aspx?f=255&MSPPError=-2147217396
There is no way to skip updating the view if it is a clustered view. It has to maintain the integrity of the data, so if it's an indexed view, when the table is updated in any way, it will also have to update the view. As you are seeing, there is a penalty
to this.
If you are doing a lot of inserts/deletes at once, it is sometimes a good idea to drop the index from the view, do your batch of inserts/updates, and then reapply the index. This way you don't have to process each update on the fly, it will just do it once
when you rebuild the index.
Also, yes, you can treat it as a standard index and rebuild/reorg it with all of your other indexes.
Thanks,
Stephen
Please click "Mark as Answer" if you found my post helpful. Thanks, Stephen.

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Thanks in Advance,
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Hi Shino,
Let`s say you have a table ZTEST_TABLE1. You create a maintenance view on it ZTEST_VIEW1. You generate the maintenance dialog for the view with Function Group ZTEST_FUGR1. After this you will be able to maintain the table from SM30 using view ZTEST_VIEW1.
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I suggest to check the SAP Library, there you`ll find more details as well.
http://help.sap.com/saphelp_nw04/helpdata/en/62/c302c7de8e11d1a5960000e82deaaa/frameset.htm
FORM before_save.
DATA: viewname TYPE vclstruc-object,
        error_flag TYPE vcl_flag_type,
        header TYPE vimdesc,
        wa_total(1000) TYPE c,
        wa_extract(1000) TYPE c.
FIELD-SYMBOLS: <view>    TYPE ANY,
                 <view_x> TYPE x,
                 <ent_x>   TYPE x,
                 <viewkey> TYPE x.
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viewname = 'ZTEST_VIEW1'.
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                                       CHANGING error_flag.
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READ TABLE <vcl_header> INTO header INDEX 1.
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" <vcl_extract> is not sorted
SORT <vcl_extract>.
LOOP AT <vcl_total> INTO wa_total.
" your checks and modifications on the record using <fs_view>
"    IF <fs_view>-fieldxy...
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Hiding a Maintenance View in a View Cluster

Hello ABAP Experts,
We have a scenario where we would like to hide a maintenance view to an existing view cluster based on condition.
Is it possible via events of a view cluster, where i can hide the view at runtime based on some condition before the view cluster is displayed ?
Is there any way as well, which help achieve this hiding of views ?
For example in the below View Cluster, i would like to hide "Define object links" view from the main view cluster "Define document Types".
Thanks,
Naresh

Hi Naresh,
Yes, you can do it in events of a view cluster, define a subroutine and bounding it to event(02) in SE54,
when you define the subroutine, it will ask you creat a mian program, in this main program, you need 'INCLUDE lsvcmcod'.
Then you can access some standard data, http://help.sap.com/saphelp_nw04/helpdata/en/62/c302c7de8e11d1a5960000e82deaaa/frameset.htm
INCLUDE lsvcmcod.
FORM yourSubroutineName.
DATA: viewname TYPE vclstruc-object,
        error_flag TYPE vcl_flag_type,
viewname = 'ZTEST_VIEW1'.
* PERFORM vcl_set_table_access_for_obj USING    viewname
*                                       CHANGING error_flag.
----> according your condition to change the view.
IF xxx = yyy.
DELETE vcl_struc_tab WHERE object = viewname.
ENDIF.
ENDFORM.
regards,
Archer

Viewing db stats cause performance hit?

Hi,I need to get stats for the cubes, (# data blocks, size on disk, fragmentation, etc)Does viewing this put work on the cube? The cubes get a lot of activity and I do not want to jeopardize the availability SLAs if checking the stats puts load on the cube processing.Thanks

Well, looking at the stats once or twice will not hurt performance that much - it will take a snapshot of what the current stats are and display the results to you.Of course, any additional load on the database can in theory affect performance, but just to see what's going on should not be an issue. Unless you are planning on running some app that constantly queries the database for this info, I wouldn't worry about it.Regards,Jade-----------------------------------Jade ColeSenior Business Intelligence ConsultantClarity [email protected]

Error while saving a Entry through view cluster ( getting TK 319 message)

We are facing an issue while saving the entry in one of the view at the lowest level of the three level View cluster.
Please find the Details of view Cluster below.
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3)Third level (Lowest level )-key => MANDT( CLNT, 3) + RULE_ID( CHAR , 20) + LOCATION_TYPE (CHAR , 20) + MEAL_RULE_TYPE( INT1 ,3) + START_DATE( DATS ,8) .
we are not able to save the Entry at the Third level and is getting the Message "Fill table key for table ITC_CALCRULE_ML only up to position 044 only " .
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to define also the date, by changing the order of MEAL_RULE_TYPE and START_DATE .Also we could use a CHAR1 instead of the INT1 for the MEAL_RULE_TYPE.
After analyzing this we came to a conclusion that we have two solutions for solving it.
1) Database Design Change : Which is generally not preferable.
2) Apply the Event 12 ( After changing the key entries for the change task (E071K) ) on the view and in its code we reduce the Object key width for the Transport Organizer and
would be able to save the entry in the database and would be able to transport the entries to our Q-system.

Hi. Were you able to fix the error?

Error while creating a View Cluster

Hello Gurus,
     I have created two maintenance views ZVIEW1 & ZVIEW2 with table maintenance generator.Know I am trying
     to create a view cluster using these views.
     I have Proceeded with the following steps to create the View Cluster:
     1. Tcode : SE54 --> GIven the name ZVIEWCLUSTER as View Cluster name & pressed ENTER.
     2. Filled the description of the View cluster.
     3.Selected the tab OBJECT STRUCTURE and filled it with ZVIEW1 & ZVIEW2.
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     5. Selected view ZVIEW2 and clicked on button "FIELD-DEPENDENCE" ,System throws an error message
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Regards,
Najam

Hi Najam,
I don't think you need to define field dependencies for both tables, you only define the relationship from the second table to the first.
Double-click on the Field dependencies folder and check the link between the two tables is correctly defined, if so you don't need to generate the field dependency twice.
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Nick

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Seema

hi
In your method there would be a parameter ie ON_TOGGLE where you can write the name of your event .
Whenever your checkbox will be clicked that event wil be called.
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Kuldeep

F4 help for a field in item table in a view cluster

Hi All,
I have a view cluster with two tables. I should provide F4 help for field in item table based on the selected row of the header table.
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Hi amar_war,
use screen painter to edit the screen layout where the field VKBUR is on. Double click the field to get the details screen. Here you can attach a search help to the field.
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H_TVKBZ has also VKORG VTWEG SPART - it will take those values from screen if filled.
If you are not satisfied with the results, you can easily create your own search help using own selection method and own search help exits if required.
Try standard search help for standard field first.
You can create a copy of VKBUR as ZVKBUR and attach search help there, you can create your own screen structure and attach the search help there - 50 ways to get your search help...
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Swapping the fields in a view cluster

Hi
I have a view cluster with the fields in the order FIELD1, FIELD2, FIELD3, FIELD4.
My requirement is that it should come in the order FIELD1, FIELD4, FIELD3, FIELD2.
Help me on this.
Thanks in advance.
Regards
Karthik

after fetching you can pass them to the required order into another internal table of the required order.
or define you internal table the way you want the data to come and in select statement it self you can use into corresponding fields to get the data in their respective positions

How to create EVENTS for a View Cluster.

Hi Tech Gurus,
I have created a view cluster on 5 tables. I need to do a validation and this can be done by using events. But i am unable to create a EVENT for the View Cluster. Could anyone please tell me how to create events for a View Cluster.
Thanks in advance for your esteemed replies.
Regards,
Raghavendra Goutham P.

Hello Pasapula
When you are in the View Cluster maintenance dialog (SE54) click on dialog "Events".
Below the field for the view cluster you have an additional field <b>FORM routines main program</b>. There you have to add the main program containing the FORM routines called by the VC events.
For example: I had defined a normal report containing an include with all the FORM routines. The report contains only the following lines of coding:
report zus_0120_u1.
* Common Data und access routines for user exits in VC maintenance
include LSVCMCOD.
include zus_0120_f1. "FORM routines for VC events
Now in the "Events" dialog of the view cluster maintenance you assign your FORM routines to the events.
Regards
Uwe

How to create wizard for a custom mainenance view/view cluster

Hi Experts,
I have created 5 custom maintenance view and have maintained all the views sequencially and have made the first mainenance view as the start view & header entry and all other views are child or subview of the header view in a custom view cluster. But I want a wizard to help the user / end user successfully enter all the required values for all child views, it will help the user to navigate from the start view to all the child views where the fields of the wizard will be associated to the child maintenance views.
Please suggest how to create wizard for view cluster.
I'll give max reward point for the helpful answer.
Thanks in advance
koustav

Hello Pasapula
When you are in the View Cluster maintenance dialog (SE54) click on dialog "Events".
Below the field for the view cluster you have an additional field <b>FORM routines main program</b>. There you have to add the main program containing the FORM routines called by the VC events.
For example: I had defined a normal report containing an include with all the FORM routines. The report contains only the following lines of coding:
report zus_0120_u1.
* Common Data und access routines for user exits in VC maintenance
include LSVCMCOD.
include zus_0120_f1. "FORM routines for VC events
Now in the "Events" dialog of the view cluster maintenance you assign your FORM routines to the events.
Regards
Uwe

Dump while copying the entries in view cluster

Hi Experts,
I am having a scenario where i am getting the dump while copying the entries through the vies cluster.
I have 2 tables CU00 and CU01. CU01 is depended on CU00.
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the data will be as follows
In CU00
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          SCHEMA2         02              TAB3
I maintained above 2 tables in a view cluster by making CU00 is the start point and defined the field dependencies as well.
in the T-code SE54 i tried to copy the existing schema and all its dependencies(means all the dependent entries in the CU01 table also).
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but it should check the consistency and display the error message when i pressed the COPY key.
I am badly struck up here. Please help me on this issue.
thanks in advance.

Hi Gouri,
CU01 and CU00 both are dictionary tables.
What I think is, while copying all the dependencies for a particular schema the system ha to check whether the data can be inserted into the child tables or not. I too dont know whether this can be done or not.
If not, it should display an error message stating that " primary key violation occurs please use different key values..."
thanks for the reply.

Creating a view cluster

Hi ,
I created a view cluster which contains a hierachy of 3 tables .
In trasaction sm34 when I give the entries for 1st table and choose the 2nd table, the entries that i have given already in 1st table is not coming automatically for the 2nd table .. what will be the reason.

Hi Gincy,
A view cluster is the set of objects, such as views, reports or tables which belong to one business function. The data can be arranged either hierarchically or non-hierarchically in view clusters.
A view-cluster transaction edits the complex cross-table data in a view cluster. The transaction navigation box shows the complex business object with its components or subobjects.
Some useful links are given below.
http://fuller.mit.edu/tech/view_clusters.pdf
View from a Cluster Table
creating Z transaction from view cluster
http://help.sap.com/saphelp_nw04/helpdata/en/7e/c81d9052c511d182c50000e829fbfe/frameset.htm
Hope this helps.
kindly reward if found helpful.
cheers,
Hema.

How to restrict data from tables in a view cluster

Hi,
I have 5 Z* tables, Company code is the common code in all of these.
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My requirement is to viewcluster should display the data of the user's company code.
When i see the data in SE54 it is showing the proper data(i.e data which is related to users company code) for some of the tables.
And displaying all company codes data for some of the tables.
What can be the issue here ?
Do we need to map the data from proper data displaying tables to these tables ? if so How to do that ?
Please help on how i can solve this issue.
Regards,
Sunil Tata.

Here is a small utility that can be used to copy and paste between a table and Excel.
I have been obliged to slice the llb into small chuncks for internet technical issues. Sorry...
CCMessage Edited by chilly charly on 04-02-2005 03:21 PM
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Copy.zip ‏24 KB
Paste.zip ‏22 KB
CopyPaste example.zip ‏11 KB

Reg: View cluster

Hello All,
How to find out the view cluster associated with a view ?

Hi Srivijaya,
you may access table VCLSTRUC. In field OBJECT you should enter the name of the view, then in field VCLNAME you will get the view cluster name.
I hope it helps. Best regards,
Alvaro

View cluster index affecting performance

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