Background Worker

I 'm using NetBeans ide version 6.1, i created the sample desktop application for a project that am doing. My question is related to the background worker action that you can create automatically. I found out how to add an action on a button, and now i want to make a generic background worker that i can pass objects such as my jdbc queries and execute it. I want also to be able to to use tha animation / progress bar also.

Check out swing worker
http://java.sun.com/products/jfc/tsc/articles/threads/threads2.html

Similar Messages

Error occurs in background work process.

Respected Guru's,
error occurs in two background work process, i have displayed the trace files of both the bgd work process.
How to rectify this error ?
Further, can you please help me in identifying the problem, please suggest me good material which gives steps for troubleshooting such error in the developer's and system trace.
Thank you.
Dayanandan.a
Developer trace file for BGD WP 1
trc file: "dev_w12", trc level: 1, release: "620"
ACTIVE TRACE LEVEL           1
ACTIVE TRACE COMPONENTS      all, M
M systemid   560 (PC with Windows NT)
M relno      6200
M patchlevel 0
M patchno    251
M intno      20020600
M pid        2864
M
M ***LOG Q0Q=> tskh_init, WPStart (Workproc12 2864) [dpxxdisp.c   1016]
M <EsNT> Memory Reset enabled as NT default
M calling db_connect ...
M db_connect o.k.
M rdisp/reinitialize_code_page -> 0
M
M Tue Jul 30 10:22:53 2002
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020730.AUD
M
M Tue Jul 30 10:22:55 2002
M *** ERROR => SlicLockSema: sema locked [slicshm.c    89]
M *** ERROR => SlicShmInit: SlicLockSema failed [slicshm.c    231]
M *** ERROR => SlicValBufInit: cannot initialize SHM [slicshm.c    299]
M *** ERROR => SlicValBufRead: license buffer not initialized [slicshm.c    329]
M *** ERROR => SlicCheckBuf: some error reading license buffer contents [slicshm.c    419]
M
M Wed Jul 31 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020730.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020731.AUD
M Thu Aug 01 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020731.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020801.AUD
M
M Fri Aug 02 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020801.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020802.AUD
M
M Fri Aug 02 00:14:09 2002
M *** ERROR => ThCallHooks: event handler rsts_before_commit for event BEFORE_COMMIT failed [thxxtool3.c 235]
M ***LOG R38=> ThICommit3, db_commit98 ( 001024) [thxxhead.c   10641]
M ***LOG R18=> ThPrivCommit, ThICommit () [thxxhead.c   11307]
M in_ThErrHandle: 1
M *** ERROR => ThPrivCommit: ThICommit (step 4, th_errno 9, action 2, level 1) [thxxhead.c   8277]
M
M Info for wp 12
M
M    stat = 4
M    reqtype = 4
M    act_reqtype = 4
M    tid = 12
M    mode = 0
M    len = 24
M    rq_id = 6638
M    rq_source = 1
M    last_tid = 12
M    last_mode = 0
M    rfc_req = 0
M    report = >                                        <
M    action = 16
M    tab_name = >                              <
M
M
M Modeinfo for User T12/M0
M
M    tm state = 2
M    uid = 13
M    term type = 0x0
M    display = 0x0
M    cpic_no = 0
M    cpic_idx = -1
M    usr = >SAPUSER     <
M    terminal = >                    <
M    client = >800<
M    conversation_ID = >        <
M    appc_tm_conv_idx = -1
M    imode = 3
M    mode state = 0x42
M    th_errno = 9
M    async_receives = 0
M    cpic_receive = 0
M    em handle = 2
M    roll state = 4
M    abap state = 4
M    em state = 3
M    eg state = 1
M    lock = 0
Developer's trace file for BGD WP 2
trc file: "dev_w13", trc level: 1, release: "620"
ACTIVE TRACE LEVEL           1
ACTIVE TRACE COMPONENTS      all, M
M systemid   560 (PC with Windows NT)
M relno      6200
M patchlevel 0
M patchno    251
M intno      20020600
M pid        2872
M
M ***LOG Q0Q=> tskh_init, WPStart (Workproc13 2872) [dpxxdisp.c   1016]
M <EsNT> Memory Reset enabled as NT default
M
M Tue Jul 30 10:21:44 2002
M calling db_connect ...
M db_connect o.k.
M
M Tue Jul 30 10:22:25 2002
M rdisp/reinitialize_code_page -> 0
M
M Tue Jul 30 10:22:53 2002
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020730.AUD
M
M Wed Jul 31 00:00:52 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020730.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020731.AUD
M
M Thu Aug 01 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020731.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020801.AUD
M
M Fri Aug 02 00:00:51 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020801.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020802.AUD
M
M Fri Aug 02 00:14:09 2002
M *** ERROR => ThCallHooks: event handler rsts_before_commit for event BEFORE_COMMIT failed [thxxtool3.c 235]
M ***LOG R38=> ThICommit3, db_commit98 ( 001024) [thxxhead.c   10641]
M ***LOG R18=> ThPrivCommit, ThICommit () [thxxhead.c   11307]
M in_ThErrHandle: 1
M *** ERROR => ThPrivCommit: ThICommit (step 4, th_errno 9, action 2, level 1) [thxxhead.c   8277]
M
M Info for wp 13
M
M    stat = 4
M    reqtype = 4
M    act_reqtype = 4
M    tid = 13
M    mode = 0
M    len = 24
M    rq_id = 6643
M    rq_source = 1
M    last_tid = 13
M    last_mode = 0
M    rfc_req = 0
M    report = >                                        <
M    action = 16
M    tab_name = >                              <
M
M Modeinfo for User T13/M0
M
M    tm state = 2
M    uid = 14
M    term type = 0x0
M    display = 0x0
M    cpic_no = 0
M    cpic_idx = -1
M    usr = >SAPUSER     <
M    terminal = >                    <
M    client = >800<
M    conversation_ID = >        <
M    appc_tm_conv_idx = -1
M    imode = 3
M    mode state = 0x42
M    th_errno = 9
M    async_receives = 0
M    cpic_receive = 0
M    em handle = 3
M    roll state = 4
M    abap state = 4
M    em state = 3
M    eg state = 1
M    spa state = 3
M    enq state = 0
M    next hook = T-1/U-1/M255
M    master hook = T-1/U-1/M255
M    slave hook = T-1/U-1/M255
M    debug_tid = -1
M    mode type = 0x1
M    debug = 0
M    lock = 0
M
M
M Sat Aug 03 00:00:55 2002
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020803.AUD
M
M Sun Aug 04 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020803.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020804.AUD
M
M Mon Aug 05 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020804.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020805.AUD
M
M Tue Aug 06 00:00:49 2002
M SecAudit(check_daily_file): audit file closed E:\usr\sap\SER\DVEBMGS00\log\20020805.AUD
M SecAudit(check_daily_file): audit file opened E:\usr\sap\SER\DVEBMGS00\log\20020806.AUD

Thank you, Bhaskar,
I have performed consistency check for temse objects and all the comments are displayed in red color.
Does it mean that objects are inconsistent. But, no comments states that object are inconsistent.
I have attached the comments displayed,
Consistency check of table TST01 / TemSe objects
This comment occurs repeatedly, Unable to access the related file           Length = 0
Incorrect number of data lines in TST03
Object with part number 1 missing
Object reset                     Length = 0
The related file has an incorrect length
Consistency check of table TST03 / TemSe data
No object found in TST01
May i delete all objects, as all the comments are red in color.
Dayanandan.A

How to find out number of background work processe available in the system?

Hi All,
I have a FM that triggers a background job using JOB_OPEN, ABAP_SUBMIT and JOB_CLOSE. But the problem is if there are no background work processes available at that moment, it does not return error. Not sure whether the job is even scheduled!
Is there a way to find out if there are any background work processes available in the system? I know a FM SPBT_INITIALIZE which gives info about dialog work processes. Is there any other FM similar to this which gives info about background wp??
Regards,
Shailesh

your Job will remain in a queue by message handler. once workprocess is free, your job gets scheduled
by the way, you can use the functionality used in FM TH_DISPLAY_WORKPROCESS_LIST to read the workprocesses
the command which gets you the workprocess is:
CALL 'ThWpInfo' ID 'OPCODE' FIELD OPCODE_WP_LIST
ID 'TAB' FIELD LIST_STATE_WPLST-TABL
ID 'CPU' FIELD LIST_STATE_WPLST-CPU.
check how its written in include LSDEBF01, form SET_LIST_WPLST
Edited by: Soumyaprakash Mishra on Dec 12, 2011 12:17 PM

How do I change the color of the background (working) space in Adobe Elements 11 from that awful olive green color to light gray or black or white?

How do I change the color of the background (working) space in Adobe Elements 11 from that awful olive green color to light gray or black or white?

Thanks so much for responding! I tried right clicking on the space around the image and nothing happens. No drop down menu appears for me to select a different color! Appreciate your help . . . Diane

Don't want Background Work Item as run as a tRFC

I have a purchase requisition approval workflow. My problem is that the purchase requisition is showing WF-BATCH as the user-id that did the release of the PR.
My workflow has a sync dialog user-decision step for the approve or reject. If the user approves the PR then it calls a background synchronous release step. I have the "Advance with dialog" check box on the background task.
When I look at the workflow log the background task starts with the dialog user-id, however it then creates a tRFC entry so the work item actually finishes under the WF-BATCH user-id.
What setting(s) do I have to change so that the background work item doesn't execute as a tRFC?
Thanks,
Jeff

Hi Jeff,
I presume you are using the custom workflow and not the std one.
If so, in your workflow, is the user who is approving the PR is supposed to release he PR or it is different authority who will release PR ?
If it the same authority who acts on user decision and who should release the PR, I could not get the purpose of not using the step <i>Overall Release</i> similar to std PR release workflow as against using the decision and background release step.
Because, in this step of std workflow, user will have to act and release the PR and then you will have his name under workflow log.
As Glauco indicated, for background steps, you will always have name of WF-BATCH.
Regards,
Akshay Bhagwat

Transaction/Report to process background work items which r in READY state

HI,
Can somebody kindly tell me the transaction/report program to process background work items which are in ready state. SM59 configuration was missing and hence, workflows failed to execute after being started successfully. Now, I want to comeplete these operations.
Thanks a lot,
Max

Hi Max,
Did you check transaction SWPC? If the workflows are in there you can start them through in a proper way.
Regards,
Martin

Function module in background work process

Hi All,
i'm using trfc for processing FM only in background work process
CALL FUNCTION 'FUNCTION_MODULE' IN BACKGROUND TASK
but when i execute FM it's occupying two work process one is dialog (running current FM )and another one is background( running SAPLERFC) .
so pls suugest me how to avaiod FM to occupy dialog workprocess.
Regards,
Anuj jain

Hi Anuj,
It unfortunately means:
start FM in a particular time in Dialog work process
The BACKGROUND word in abap syntax is misleading.
For true background processing, i.e. background WORK PROCESS (of type BGD in SM50)
ONLY ABAP PROGRAMS or Commands or External Programs
can be run under background work process. (as per SM36)
Here we are trying a function module, which is not supported. This is as per my understanding.
regards,
amit m.
Edited by: Amit Mittal on Aug 17, 2010 2:03 PM
Edited by: Amit Mittal on Aug 17, 2010 2:05 PM

Increase the number of background work processes for data load performance

Hi all,
There are 10 available background work processes in the BW system. We're doing some mass load to multiple ODS.But system uses only 3 background processes. How can i
increase the number of used background work processes for new data load.
I tried to change number of prosesses with RSODSO_SETTINGS. But no successes. Are there any other settings need to change?
thanks,
Yigit

Hi sankar,
I entered the max proc. number into ROIDOCPRMS. But it doesn't make difference. System still uses only 3 of background processes. RSCUSTA2 is replaced with
RSODSO_SETTINGS in BI 7.0 and this trans. can only change the processes for data activation, SID generation and rollback. I need to change the process numbers for data extraction.

How to stop or reduce the RAM usage as the Wpf Datagrid is Continuosly being updated by background Worker?

Hi,
I am developing a packet sniffer application, I am getting a packets from adapter and am updating the information in the Wpf Datagrid using a Background worker. it is a continuous process. So if run this application for hours, after 5 or 6 hours I am getting
a "Sytem.OutofMemoryException" as the RAM being full. Now my requirement is, the usage of RAM should have a some limit(suppose 750MB) for my application, once application reaches this, the usage of RAM should not increase and at the same time I should
not get "OutofmemoryException". I mean application should free cached memory of starting Rows of DataGrid, means I should not display the initial Rows and I should display the latest entries. how can I achieve this?
thanks,
EDIT:
Here I am using DataGrid.Items.Add() method to add the entries into the datagrid.
How can I change my code to Observablecollection items now?

You could remove entries from the ItemsSource collection of the DataGrid once the number of items reaches a certain threshold of items.
If you for example use an ObservableCollection<T> as the ItemsSource of the DataGrid you could handle its CollectionChanged event and remove the oldest item when there are a total of say over 5000 (you may of course increase this value in your
partiuclar application of you require to be able to display more than 5000 items in the DataGrid) items in it. This will make sure that there will never by any more than 5000 items kept in memory:
const int MaxCount = 5000;
public MainWindow()
InitializeComponent();
ObservableCollection<string> collection = new ObservableCollection<string>();
collection.CollectionChanged += (ss, ee) =>
if (collection.Count > MaxCount)
collection.RemoveAt(0);
yourDataGrid.ItemsSource = collection;
Since there is no good way to determine exactly how much physical memory the objects in the ObservableCollection<T> occupy so you better choose a maximum
number of items to be kept in memory (like MaxCount = 5000 in the sample code above) and then remove the oldest one when the number of items reach this maximum.
Hope that helps.
Please remember to close your threads by marking helpful posts as answer and then start a new thread if you have a new question.

Background Worker + batch processing

Hi,
I have 2 issues in the same project.
Issue 1:
I have a project using the Object API. I've created a VB.NET assembly that encapsulates the Object API's in this project. The assembly is instantiated from a VB.NET form application for testing. When calling one of the methods in the assembly by pressing a button the function runs fine. However, when running the same function from a background worker, it throws an exception. I've included a sample project here that replicates the issue.
Issue 2:
The same project is also called from a batch file. When testing the app from the debugger, again it runs fine. When calling the app from the batch file, an exception is thrown instantiating the GroupWise Application object. Again, i've included sample code.
If anyone can shed some light on these isssues, I would appreciate it.
Thanks
Tim

> Hmmm Batch processing on 1.5 does not work.
Please explain what steps you take, and what error messages you get.
> Does it work any better in 2 or 3??
Batch processing in all versions of AA is identical.
Why do you use 4 versions of CE/AA?

Free background work process

Hi All,
how to check statistics of free background work process in the system.
Regards,
MK

Hello Manikandan,
RZ20 has a monitor for this under
RZ20 --> SAP CCMS Monitor Templates
               --> Background Processing
                    --> System Wide
                         --> Background
                             --> BackgroundService
                                  --> SystemWideFreeBPWP
If you need statistics for a longer time period you can activate collection of data for this MTE in CPH.
Regards,
Alwina

Calling subroutine perform background work process

Hi all,
Can we call a perform (subroutine)in background work process in a program.
if yes, pls specify.
regards,
Anuj

Anuj,
we can call the subroutine..whether it is foreground or background..if the perform statement is used the respective routine is called . Can you be specific on the requirement you are looking after..
Sagar.

Background work process On-hold

Hello,
There is a background job running in Production system for more that 10000ms.
Background work processes is on-hold and the resaon is ARFC.
Following is the log file:
X Thu Jun 11 07:31:10 2009
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
X *** ERROR => EmActiveData: Invalid Context Handle -1 [emxx.c       2220]
Can any one help.
Trupti

Hi,
In addition to above check below links. it speaks about same error message.
Re: Kernel upgrade to 700.175 UC incresing the dev_w0 log drastically
Re: RFC_VMC_COMMUNICATION_ERROR
Thanks
Sushil

Background work process

How to increase the background work processes on BW SYSTEM
Thanks your help in advance
Msr

- start transaction RZ10
- open your instance profile
- edit it using the "Basic Maintenance" radio button
- increase the background processes
- save
- confirm
- restart the instance
Markus

Update Work Process and Background work process

Hi Friends,
I have a doubt regarding the "Update Work Process and Background work process" ......
which one is used at what scenario ?????
If not wrong --> update work process is used when there is an update task .........??? and similarly If background work process is used when there a background task is given explicitly .........???
Can we can update anything through Background>????
If yes .... which workprocess will be selected at that time??????
Expecting your answers ??
Thanks in advance !!
Cheers
R.Kripa.

HI
GOOD
UPDATE WORK PROCESS->
http://help.sap.com/saphelp_nw04s/helpdata/en/e5/de86e135cd11d3acb00000e83539c3/content.htm
BACKGROUND WORK PROCESS->
http://help.sap.com/saphelp_nw2004s/helpdata/en/4a/2d513897110872e10000009b38f889/content.htm
THANKS
MRUTYUN

Background Worker

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