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SAP Note 739863 - Repairing data in BW

 Note Language: English Version: 10 Validity: Valid Since 09/13/2004

Summary

Symptom 

Some data is incorrect or missing in the PSA table or in the ODS object

(Enterprise Data Warehouse layer).

Other terms

Restore data, repair data

Reason and Prerequisites

There may be a number of reasons for this problem: Errors in the relevant

application, errors in the user exit, errors in the DeltaQueue, handling

errors in the customers posting procedure (for example, a change in the

extract structure during production operation if the DeltaQueue was not yet

empty; postings before the Delta Init was completed, and so on), extractor

errors, unplanned system terminations in BW and in R/3, and so on.

Solution

Read this note in full BEFORE you start actions that may repair your data

in BW. Contact SAP Support for help with troubleshooting before you start

to repair data.

BW offers you the option of a full upload in the form of a repair request

(as of BW 3.0B). If you want to use this function, we recommend that you

use the ODS object layer.

Note that you should only use this procedure if you have a small number of

incorrect or missing records. Otherwise, we always recommend areinitialization (possibly after a previous selective deletion, followed by

a restriction of the Delta-Init selection to exclude areas that were not

changed in the meantime).

o 1. Repair request: Definition

If you flag a request as a repair request with full update as the update

mode, it can be updated to all data targets, even if these already contain

data from delta initialization runs for this DataSource/source system

combination. This means that a repair request can be updated into all ODS

objects at any time without a check being performed. The system supports

loading by repair request into an ODS object without a check being

performed for overlapping data or for the sequence of the requests. This

action may therefore result in duplicate data and must thus be prepared

very carefully.

The repair request (of the "Full Upload" type) can be loaded into the same

ODS object in which the 'normal' delta requests run. You will find this

request under the "Repair Request" option in the InfoPackage (Maintenance)

menu.

o 2. Prerequisites for using the "Repair Request" function

- 2.1. Troubleshooting

Before you start the repair action, you should carry out a thorough

analysis of the possible cause of the error to make sure that the errorcannot recur when you execute the repair action. For example, if a key

figure has already been updated incorrectly in the OLTP system, it will not

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SAP Note 739863 - Repairing data in BW

the data target.

Some applications have additional special features:

Logistics cockpit: As preparation for the repair request, delete the SetUp

table (if you have not already done so) and fill it selectively with

concrete document numbers (or other possible groups of documents determined

by the selection). Execute the Repair request.

Caution: You can currently use the transactions that fill SetUp tables with

reconstruction data to select individual documents or entire ranges of

documents (at present, it is not possible to select several individual

documents if they are not numbered in sequence).

FI: The Repair request for the Full Upload is not required here. The

following efficient alternatives are provided: In the FI area, you can

select documents that must be reloaded into BW again, make a small change

to them (for example, insert a period into the assignment text) and save

them -> as a result, the document is placed in the delta queue again and

the previously loaded document under the same number in the BW ODS objectis overwritten. FI also has an option for sending the documents selectively

from the OLTP system to the BW system using correction programs (see note

616331).

o 3. Repair request execution

How do you proceed if you want to load a repair request into the data

target? Go to the maintenance screen of the InfoPackage (Scheduler), set

the type of data upload to "Full", and select the "Scheduler" option in the

menu -> Full Request Repair -> Flag request as repair request -> Confirm.

Update the data into the PSA and then check that it is correct. If the data

is correct, continue to update into the data targets.

Header Data

Release Status: Released for Customer

Released on: 09/13/2004 07:59:07

Master Language: German

Priority: Recommendations/additional info

Category: Consulting

Primary Component: BW-BCT Business Content and Extractors

Secondary Components:

BC-BW BW Service API

BW-WHM-DST Data Staging

The Note is release-independent

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SAP Note 739863 - Repairing data in BW

Related Notes

 Number Short Text

1607601 FAQ: Delta Errors

731682 Backup in BW and OLTP: Experiences, risks & recommendations

691721 Restoring lost data from a delta request

643880 Background Information: Deleting Data from Change Logs

602260 Procedure for reconstructing data for BW