In Which R/3 Table, the Extraction Date should be RESET to Limit DELTA ???

Question

Hi all,
  We have a daily delta extraction setup for DataSource 0FI_GL_4 from R/3 into ODS. I think there is a table on R/3 side where we could RESET the extraction date (?) to limit the delta reload incase something goes wrong with delta process. Without this reset, it may take 2-3 WEEKS for us.
Is any one has any idea about this table , PLEASE....
Thanks.

Answer 1

hi Venkat,
check oss note 485958-BW-BCT-FI: Repeating delta extractions
Symptom
This note provides the option of repeating delta extractions under certain conditions.
The note is valid for the DataSources listed below:
0FI_AP_4 - Accounts Payable: Line Items
0FI_AR_4 - Accounts Receivable: Line Items
0FI_GL_4 - General Ledger: Line Items
0FI_TX_4  Taxes: Line Items
0FI_AP_6  Accounts Payable: Transaction Figures Using Delta Extraction
0FI_AR_6  Accounts Receivable: Transaction Figures Using Delta Extraction
0FI_GL_6 - General Ledger:  Transaction Figures Using Delta Extraction
0FI_AP_7 - Accounts Payable: Special G/L Transaction Figures Using Delta Extraction
0FI_AR_7 - Accounts Receivable:  Special G/L Transaction Figures Using Delta Extraction
0FI_GL_7 - General Ledger:  Cost of Sales Accounting Ledger Using Delta Extraction
0FI_AR_8 - Accounts Receivable: Credit Management: Central Data Using Delta Extraction
0FI_AR_9 - Accounts Receivable:  Credit Management: Control Area Data Using Delta Extraction
0FI_AR_10 - Accounts Receivable: Payment History Using Delta Extraction
Other terms
BWOM2_TIMEST, TIMESTAMP, BWOM_SETTINGS, LAST_TS, delta, init
Reason and Prerequisites
For test or correction purposes you require a function to repeat delta extractions.
In the standard system, you can repeat the delta extractions for the last sixty days.
The number of days is defined by the 'DELTIMEST' parameter in the BWOM_SETTINGS table.
For all DataSources mentioned above you can repeat the delta extraction without problems because all DataSources use an ODS object. The system automatically filters out data that is selected several times.
Solution
The solution consists of resetting the time stamps used for the delta extraction in the BWOM2_TIMEST table to a certain date.
To do this, you must reset the 'X' marker in the 'LAST_TS' column for the last successful delta extraction.
The next delta extraction then loads all data created or changed as of this date to the BW system.
To reset the 'X' marker in the 'LAST_TS' column, use the 'BWOM2_TIMEST' report. If the report is not yet available in you system, you can install it as described in Note 836288.
Caution - important note
If you repeat several delta extractions in a run using this note, the number of the extracted records will in most cases be smaller than the total of the individual delta extractions.
This can happen in the following cases:
If documents are contained in several individual delta extractions due to document changes. The system selects these documents only once.
If you have set parameter BWFIOVERLA = X in the BWOM_SETTINGS table. (See Note 485958)
In this case, the upper limit of the period for the data selection is not, as usual, 23:59:59 of the previous day. The system also extracts all existing documents of the current day. These documents are also contained in the following delta extraction.
1. If you can load the expected data volume in one delta extraction, proceed as follows:
Execute the 'BWOM2_TIMEST' report for the relevant DataSource.
Remove the marker in the entry of the last delta extraction.
In the columns for the date of the time stamp and the time of the time stamp, you can see up to when the individual data extractions have extracted data.
Select the entry up to which the data in your BW system is still correct.
Save the changes.
Do not make any further changes in the BWOM2_TIMEST table.
              The next delta extraction uses the date + 1 of the selected entry as a lower limit for the data selection and the current date - 1 for the upper limit.
2. If you must load the expected data volume in several parts, proceed as follows:
Caution: There are the following two cases:.
a) The 'BWFIOVERLA' parameter in the BWOM_SETTINGS table is not set.
           Execute the 'BWOM2_TIMEST' report for the relevant DataSource.
           Remove the marker in the entry of the last delta extraction.
           In the columns for the date of the time stamp and the time of the time stamp, you can see up to when the individual data extractions have extracted data.
Select the entry up to which the data in your BW system is still correct.
           Save the changes.
Do not make any further changes in the BWOM2_TIMEST table.
               The next delta extraction uses the date + 1 of the selected entry as a lower limit for the data selection.
You can control the upper limit for the data selection by changing the ' BWFISAFETY' parameter in the BWOM_SETTINGS table. The upper limit is determined using the current date minus the value of the 'BWFISAFETY' parameter (default = 1).
If you want to extract the data of the last twenty days in four parts, for example, set the parameter as follows in Transaction SE16:
before the 1. delta extraction > > BWFISAFETY = 15
before the 2. delta extraction > > BWFISAFETY = 10
before the 3. delta extraction > > BWFISAFETY = 5
before the 4. delta extraction > > BWFISAFETY = 1 (= default)
b) The 'BWFIOVERLA' parameter in the BWOM_SETTINGS table is set (=X).
           First, deactivate the 'BWFIOVERLA' parameter in the BWOM_SETTINGS table. This is necessary because if you do not do this, the system ignores the settings of the 'BWFISAFETY' parameter.
           Execute the 'BWOM2_TIMEST' report for the relevant DataSource.
           Remove the marker in the entry of the last delta extraction.
           In the columns for the date of the time stamp and the time of the time stamp you can see up to when the individual data extractions have extracted data.
Do NOT select the entry up to which the data in your BW system is still correct, rather select the entry before that.
           Save the changes.
Do not make any further changes in the BWOM2_TIMEST table.
               The next delta extraction uses the date + 1 of the selected entry as a lower limit for the data selection.
You can control the upper limit for the data selection by changing the ' BWFISAFETY' parameter in the BWOM_SETTINGS table. The upper limit is determined using the current date minus the value of the 'BWFISAFETY' parameter (default = 1).
If for example you want to extract the data of the last twenty days in four parts, set the parameter in Transaction SE16 as follows:
before the 1. delta extraction > > BWFISAFETY = 15
before the 2. delta extraction > > BWFISAFETY = 10
before the 3. delta extraction > > BWFISAFETY = 5
before the 4. delta extraction > > BWFISAFETY = 1 (= default)
                and parameter BWFIOVERLA = X to return to the originaldelta mode.