Performance issues-assigning background jobs to a designated server

Hello all, we have been having peformance issues in our production enviorment and were entertaining the idea of running all our our background jobs on a separate/designated server. Has anyone had any experience with this and if so any insight on how you did this would be appreciated? Thanks.

I suppose your performance issues are then for the online users? In general, the best option should be to distribute the workload as much as possible, to avoid performance problems for online users as well as background jobs.
I agree with Atish, this is something for Basis people. Ask them (hopefully that's not you to look at their application server settings. I know where I used to work before they had set up the system so only a certain part of the dialog processes could be occupied by background jobs. I am sure SAP has a lot of parameters that can be tweaked, possibly also with time-dependent settings?

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Issue with background job--taking more time

Hi,
We have a custom program which runs as the background job. It runs every 2 hours.
Itu2019s taking more time than expected on ECC6 SR2 & SR3 on Oracle 10.2.0.4. We found that it taking more time while executing native SQL on DBA_EXTENTS. When we tried to fetch less number of records from DBA_EXTENTS, it works fine.
But we need the program to fetch all the records.
But it works fine on ECC5 on 10.2.0.2 & 10.2.0.4.
Here is the SQL statement:
EXEC SQL PERFORMING SAP_GET_EXT_PERF.
SELECT OWNER, SEGMENT_NAME, PARTITION_NAME,
         SEGMENT_TYPE, TABLESPACE_NAME,
         EXTENT_ID, FILE_ID, BLOCK_ID, BYTES
   FROM SYS.DBA_EXTENTS
   WHERE OWNER LIKE 'SAP%'
   INTO
   : EXTENTS_TBL-OWNER, :EXTENTS_TBL-SEGMENT_NAME,
   :EXTENTS_TBL-PARTITION_NAME,
   :EXTENTS_TBL-SEGMENT_TYPE , :EXTENTS_TBL-TABLESPACE_NAME,
   :EXTENTS_TBL-EXTENT_ID, :EXTENTS_TBL-FILE_ID,
   :EXTENTS_TBL-BLOCK_ID, :EXTENTS_TBL-BYTES
ENDEXEC.
Can somebody suggest what has to be done?
Has something changed in SAP7 (wrt background job etc) or do we need to fine tune the SQL statement?
Regards,
Vivdha

Hi,
there was an issue with LMT's but that was fixed in 10.2.0.4
besides missing system statistics:
But WHY do you collect every 2 hours this information? The dba_extents view is based on really heavy used system tables.
Normally , you would start queries of this type against dba_extents ie. to identify corrupt blocks and such:
SELECT owner , segment_name , segment_type
        FROM dba_extents
       WHERE file_id = &AFN
         AND &BLOCKNO BETWEEN block_id AND block_id + blocks -1
Not sure what you want to achieve with it.
There are monitoring tools (OEM ?) around that may cover your needs.
Bye
yk

Issue in background job for call transaction

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Hi,
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Background job output to Presentation server

Hi,
I am executing report as Background job.
after job gets completed output should be in excel format in front end or presentation server.
Regards
Naga

Hi,
We cannot perform any action on the presentation server in a program that is being execcuted in background. What you can do is to write the output on to the app server, and after wards move the file on to the Pres. server using CG3Y transaction.
Regards,
Ravi
Note : Please mark the helpful answers

Wanted to run a background job in diff app server

i wanted to run a job in diff app server...
how can i do it.
sap guru

In the JOB_CLOSE funtion module,
you have a parameter for that.. check it..

Virsa CC 5.1: Issue with Background Job

Dear All,
I almost finished configuration of our new Compliance Calibrator dashboard (Java stack of NW'04). But, unfortunately, have an issue with SoD analysis now.
Using SAP Best Practice recommendations, we have uploaded all functions, business processes and risks into CC database, and then successfully generated new rules (there are about 190 active ones in our Analysis Engine).
I also configured JCo to R/3 backend and was able to extract the full list of our users, roles and profiles. But somehow background analysis job fails.
In job history table I see the following message: "Error while executing the Job:null", and in job log there is an entry, saying that "Daemon idle time longer than RFC time out, terminating daemon 0". But it's quite strange, as we use default values: RFC Time Out = 30 min, and daemons are invoked every 60 seconds.
Please, advise whether you had similar issues in your SAP environment and, if yes, how you resolved them.
Thanks,
Laziz

Hi Laziz
I am now just doing the first part of CC. May I know your details in how to configured Jco To R/3 Backend? Do you need to create any SM59 for connection T in R/3? If yes, I am lacking of the details to do that if you could help? Thank you.
Regards
Florence

Java application to act as background job on SAP J2EE server

Hi Folks,
I have a java class(assume, ClassA) in a DC. This class has a method to call a Web Service.
I have to create one more DC, which contains my Java application.
This application should make calls to ClassA's method after every 15 minutes.
I guess I will have to create a servlet for this. Also, I think I can use java.util.Timer for making the regular calls.
Can you please suggest me the ways to proceed on this?
Thanks.

Thanks, Frank.
Yes, we too have a cluster environment. In our case, this scheduler has to run only on one server node.
As per the technical requirements, I went ahead with a Servlet application.
The scheduler is running fine, except one problem.
I need to call an EJB method deployed on the same server.
Below is the code snippet.
InitialContext ctx = new InitialContext();
MyEjbLocalHome objLocalHome = (MyEjbLocalHome) ctx.lookup("localejbs/my.com/abc~myearDC/MyEjbBean");
I am getting ClassCastException at the above line.
I am sure that the local home interface is correct and belongs to the same EJB.
Can you please help me with this?

Can we Create Post Good Issue Document as Background Job

Hi SAP Techies,
My current projects requires me to run Post Good Issue , as Background Job, Is it possible to do it.If yes
What is the entire process.
Regards
Naveen

Hi
The answer to this question lies in transaction VL23.
You can create a variant and schedule it to run; for example at 10:00 pm every night.
You need to explore this more but this t-code is the main answer.
Please reward points if you found this helpful.
Regards
SDC

Performance issues -- related to printing

Hi All,
I am haviing production system performance issues related to printing. endusers are telling the printing is slow for almost printers. We are having more that 40 to 50 printers in landscape.
As per my primary investigation I didnt find any issues in TSP01 & TSP02 tables. But I can see the table TST01 and TST03 table having many number of entries (more that lakh). I dont have idead about this table. Is ther eany thing related to this table where the print causes slowness or any other factors also makes this printing issue .. Please advice ..
thanks in advance

Hai,
Check the below link...
http://help.sap.com/saphelp_nw70/helpdata/en/c1/1cca3bdcd73743e10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/fc/04ca3bb6f8c21de10000000a114084/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/86/1ccb3b560f194ce10000000a114084/content.htm
TemSe cannot administer objects that require more than two gigabytes of storage space, regardless of whether the objects are stored in the database or in the file system. Spool requests of a size greater than two gigabytes must therefore be split into several smaller requests.
It is enough if you perform the regular background jobs and Temse consistency checks for the tables.
This will help in controlling the capacity problems.
If you change the profile parameter rspo/store_location parameter value to 'G' this will make the performance better. The disadvantages are TemSe data must be backed up and restored separately from the database using operating system tools, In the event of problems, it can be difficult to restore consistency between the data held in files and the TemSeu2019s object management in the database. Also you have take care of the Hard disk requirements because in some cases, spool data may occupy several hundred megabytes of disk storage. If you use the G option, you must ensure that enough free disk space is available for spool data.
Regards,
Yoganand.V

Dreamweaver css-background-image display in design area

dreamweaver 8 does not display css-assigned
background-images in the design-area... how can you teach him to do
so? dreamweaver mx still did this without any fuss... in dw8 you
search endlessly and in vain for a button to teach him the trick...
or has dreamweaver under adobe forgotten, what it already could
do??
can somebody please tell me? thanks!
[email protected]
ps: the background-image you assign using an id
(example:
#maindiv{
background-image:url(../pictures/capriccio-ornamentraender.jpg);
background-repeat:no-repeat;
background-position:center;
background-color:#CC3333;
is not shown (browsers do it however!), but if you assign the
image using
style="background-image:url(pictures/capriccio-ornamentraender.jpg"
within the tag, it's shown... poor performance by dw8...

dreamweaver 8 does not display css-assigned
background-images in the design-area... how can you teach him to do
so? dreamweaver mx still did this without any fuss... in dw8 you
search endlessly and in vain for a button to teach him the trick...
or has dreamweaver under adobe forgotten, what it already could
do??
can somebody please tell me? thanks!
[email protected]
ps: the background-image you assign using an id
(example:
#maindiv{
background-image:url(../pictures/capriccio-ornamentraender.jpg);
background-repeat:no-repeat;
background-position:center;
background-color:#CC3333;
is not shown (browsers do it however!), but if you assign the
image using
style="background-image:url(pictures/capriccio-ornamentraender.jpg"
within the tag, it's shown... poor performance by dw8...

Background job - programs all running at the same time...

Hi experts,
i have an issue regarding background job.i have to run multple programs in background one after another in one program.so i am using function modules job_open,submit and job_close.
my problem all the jobs are statrting at same time .but i want to run after completion of first job second job should start.
please guide me
Thanks
sai
Edited by: Julius Bussche on Feb 19, 2009 9:36 AM
Please use meaningfull subject titles

Try something like
LOOP AT it_filenames INTO ts_filenames.
CALL FUNCTION 'JOB_OPEN'
       EXPORTING
            jobname = jobname
       IMPORTING
            jobcount = jobcount.
SUBMIT program
    WITH p_file1 = ts_filenames-zzfname
    VIA JOB jobname NUMBER jobcount
    AND RETURN.
IF sy-tabix EQ 1.
    CLEAR: pred_jobcount,
           pred_jobname.
    GET TIME.
    IF sy-uzeit LT '235950'.
      sdlsstrttm = sy-uzeit + 10.
      sdlstrtdt = sy-datum.
    ELSE.
      sdlsstrttm = '000010'.
      sdlstrtdt = sy-datum + 1.
    ENDIF.
ELSE.
    sdlsstrttm = '      '. " no_time from LBTCHTOP
    sdlstrtdt = '        '. " no_date from LBTCHTOP
ENDIF.
CALL FUNCTION 'JOB_CLOSE'
       EXPORTING
            jobcount             = jobcount
            jobname              = jobname
            predjob_checkstat    = ' '
            pred_jobcount        = pred_jobcount
            pred_jobname         = pred_jobname
            sdlstrtdt            = sdlstrtdt
            sdlstrttm            = sdlstrttm
       EXCEPTIONS
            cant_start_immediate = 1
            invalid_startdate    = 2
            jobname_missing      = 3
            job_close_failed     = 4
            job_nosteps          = 5
            job_notex            = 6
            lock_failed          = 7
            OTHERS               = 8.
pred_jobcount = jobcount.
pred_jobname = jobname.
ENDLOOP.
I removed the checkstat, cause if you want to check the status you only have to submit one job with multiple steps. (Put JOB_OPEN and JOB_CLOSE out of the loop)
CALL FUNCTION 'JOB_OPEN'
     EXPORTING
          jobname = jobname
     IMPORTING
          jobcount = jobcount.
LOOP AT it_filenames INTO ts_filenames.
SUBMIT program
    WITH p_file1 = ts_filenames-zzfname
    VIA JOB jobname NUMBER jobcount
    AND RETURN.
ENDLOOP.
CALL FUNCTION 'JOB_CLOSE'
     EXPORTING
          jobcount = jobcount
          jobname   = jobname
          strtimmed = 'X'.
Regards

Background job not automatically poopulating Dependant Demand

Hi Users,
We've recently set up a POS & PA using the DP-BOM selection and characteristics, manually created PPM's and generated CVC's using the BOMS. All of this is set up fine in our SCM 7.0.
The background job has created the forecasts for the ouptput products but NOT the input product.
Now if I call up the parent material, and then choose to show the input products the dependant demand is generated. If I now return to the material with the dependant demand, it now shows the demand from the parent.
Or, if the forecast is genereated interactively, then the dependant demand is poopulated.
Is there an automated method to populate the dependant demand when using background jobs? I would like to think that we don't have to query every sales BOM parent in DP and drill into the input products to load the dependant demand?
Please let me know if there is an easier way to do this as part of the background processing.
Thanks
Edited by: Paul_111 on Mar 31, 2011 4:20 PM

Hi Andand,
Thanks for your reply and sorry if my post is confusing.
As far as the PPM with imputs A & B, output C - I have this relationship working and calcuclating demand in DP no problems.
If I now add a new PPM combination inpput X, Y and output Z. Create the BOM CVC and TSO so its all set to go. Add to selection profiles and background jobs.
Now, if I run the background job to create the forecast and this runs successfully. Now I check my products.
Z has the forecast generated, X & Z have no dependant demand showing.
The only way I've found that pushes the demand to X & Z is:
- open product Z in demand planning and then choose the option to show input products from the header
OR - from demand planning, select the univariate forecast to run interactively.
My issue:
The background job (if run alone) does not push the forecast on Z to X & Y.
And if I show the input products or create forecast (as bove) the dependat demand is shown on X & Y.
This is going to be a slow process if we have to do this everytime we run the backgound job.
What am I missing when running the background job?

Can a long running batch job causing deadlock bring server performance down

Hi
I have a customer having a long running batch job (approx 6 hrs), recently we experienced performance issue where the job now taking >12 hrs. The database server is crawling. Looking at the alert.log showing some deadlock,
The batch job are in fact many parallel child batch job that running at the same time, that would have explain the deadlock.
Thus, i just wondering any possibility that due to deadlock, can cause the whole server to be crawling, even connect to the database using toad is also getting slow or doing ls -lrt..
Thanks
Rgds
Ung

Kok Aik wrote:
According to documentation, complex deadlock can make the job appeared hang & affect throughput, but it didn't mentioned how it will make the whole server to slow down. My initial thought would be the rolling back and reconstruct of CR copy that would have use up the cpu.
I think your ideas on rolling back, CR construction etc. are good guesses. If you have deadlocks, then you have multiple processes working in the same place in the database at the same time, so there may be other "near-deadlocks" that cause all sorts of interference problems.
Obviously you could have processes queueing for the same resource for some time without getting into a deadlock.
You can have a long running update hit a row which was changed by another user after the update started - which woudl cause the long-running update to rollback and start again (Tom Kyte refers to this as 'write consistency' if you want to search his website for a discussion on the topic).
Once concurrent processes start sliding out of their correct sequences because of a few delays, it's possible for reports that used to run when nothing else was going on suddenly finding themselves running while updates are going on - and doing lots more reads (physical I/O) of the undo tablespace to take blocks a long way back into the past.
And so on...
Anyway, according to the customer, the problem seems to be related to the lgpr_size as the problem disappeared after they revert it back to its orignial default value,0. I couldn't figure out what the lgpr_size is - can you explain.
Thanks
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
"Science is more than a body of knowledge; it is a way of thinking" Carl Sagan

Background jobs html output not allowed 1 MB size

hi experts,
We are facing an issue with backgrounds jobs HTML output. we are running some backgrounds jobs for Std reports, and we are facing if the HTML output is <1 MB, the std sap is cutting/reducing the content only 1 MB. I think somewhere the background jobs HTML output is fixed 1MB, request kindly let us know how & where we can modify/allow the HTML output <1 MB size for background jobs.
Please help.
thanks in advance
Srihari

thanx so much for the solution, but i wanted to fix permanently at the time of html output after the job is finished itself, but when i change the parameters from 1 to 9999 pages, it is showing information message and SAP recommends the spool output is fixed from 1 to 10 pages only, if i go beyond 10 pages, i get message memory slow and impact on memory, etc.,
I wud like to know expert opinion whether doing from 1 to 100 pages thru SP01, what are consequences are to be faced wrt to memory and other aspects. Also i wanted to know these permanent changes will affect entire system or only specific jobs?
I wanted for 2 to 5 background jobs, which are having more than 10 to 30 pages,
Please advise
thanx in advance
srihari

Restrict the background jobs to perticular server

Hi
I have ECC6 with 3 app servers. To balance the load i would like the users to schedule their background jobs on a perticular server only. Is it possible?
If most of the users using sap for reports only, in this case how can i balance the load?
UR suggestions are highly appreciable.

Go to SM37
Search for all released jobs.
Select the job you want to move to other server.
Rightclick on the job and select option "Move to different Server"
Assign server to your job.
Note: There must be least one BG process available on the server.
Regards,
Yogesh
Edited by: Yogesh Patel on Jun 14, 2011 9:10 AM

Performance issues-assigning background jobs to a designated server

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