Account based COPA datsource taking long time to extract data

Question

Hi
We have created a Account based COPA datasource but it is not extracting data in RSA3 even though the underlying tables have data in it.
If the COPA datasource is created using fields only from CE4 (segment ) and not CE1 (line items ) table then it extracts data but tat too after very long time.
If the COPA datasource is created using fields from CE4 (segment ) and  CE1 (line items ) table then it does not extarct any records and RSA3 gives a time out error..
Also job scheduled from BW side for extracting data goes on for days but does not fetch any data and neither gives any error.
The COPA tables have huge amount of data and so performance could be a issue. But we have also created the indexes on them. Still it is not helping.
Please suggest a solution to this...
Thanks
Gaurav

Answer 1

Hi Gaurav
Check this note 392635 ,,might be usefull
Regards
Jagadish
Symptom
The process of selecting the data source (line item, totals table or summarization level) by the extractor is unclear.
More Terms
Extraction, CO-PA, CE3XXXX, CE1XXXX, CE2XXXX, costing-based, account-based,profitability analysis, reporting, BW reporting, extractor, plug-in, COEP,performance, upload, delta method, full update, CO-PAextractor, read, datasource, summarization level, init, DeltaInit, Delta Init Cause and Prerequisites
At the time of the data request from BW, the extractor determines the data source that should be read. In this case, the data source to be used depends on the update mode (full initialization of the deltamethod or delta update), and on the definition of the DataSources (line item characteristics (except for REC_WAERS FIELD) or calculated key figures) and the existing summarization levels.
Solution
The extractor always tries to select the most favorable source, that is,the one with the lowest dataset. The following restrictions apply:
o Only the 'Full' update mode from summarization levels is
supported during extraction from the account-based profitability
analysis up to and including Release PI2001.1. Therefore, you can
only everload individual periods for a controlling area. You can
also use the delta method as of Release PI2001.2. However, the
delta process is only possible as of Release 4.0. The delta method
must still be initialized from a summarization level. The following
delta updates then read line items. In the InfoPackage, you must
continue to select the controlling area as a mandatory field. You
then no longer need to make a selection on individual periods.
However, the period remains a mandatory field for the selection. If
you do not want this, you can proceed as described in note 546238.
o To enable reading from a summarization level, all characteristics
that are to be extracted with the DataSource must also be contained
in this level (entry * in the KEDV maintenance transaction). In
addition, the summarization level must have status 'ACTIVE' (this
also applies to the search function in the maintenance transaction
for CO-PA data sources, KEB0).
o For DataSources of the costing-based profitability analysis,
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SAP Note 392635 - Information: Sources with BW extraction from the CO-PA
data can only be read from a summarization level if no other
characteristics of the line item were selected (the exception here
is the 'record currency' (REC_WAERS) field, which is always
selected).
o An extraction from the object level, that is, from the combination
of tables CE3XXXX/CE4XXXX ('XXXX' is the name of the result area),
is only performed for full updates if (as with summarization
levels) no line item characteristics were selected. During the
initialization of the delta method this is very difficult to do
because of the requirements for a consistent dataset (see below).
o During initialization of the delta method and subsequent delta
update, the data needs to be read up to a defined time. There are
two possible sources for the initialization of the delta method:
- Summarization levels manage the time of the last update/data
reconstruction. If no line item characteristics were selected
and if a suitable, active summarization level (see above)
exists, the DataSource 'inherits' the time information of the
summarization level. However, time information can only be
'inherited' for the delta method of the old logic (time stamp
administration in the profitability analysis). As of PlugIn
Release PI2004.1 (Release 4.0 and higher), a new logic is
available for the delta process (generic delta). For
DataSources with the new logic (converted DataSources or
DataSources recreated as of Plug-In Release PI2004.1), the line
items that appear between the time stamp of the summarization
level and the current time minus the security delta (usually 30
minutes) are also read after the suitable summarization level
is read. The current time minus the security delta is set as
the time stamp.
- The system reads line items If it cannot read from a
summarization level. Since data can continue to be updated
during the extraction, the object level is not a suitable
source because other updates can be made on profitability
segments that were already updated. The system would have to
recalculate these values by reading of line items, which would
result in a considerable extension of the extraction time.
In the case of delta updates, the system always reads from line
items.
o During extraction from line items, the CE4XXXX object table is read
as an additional table for the initialization of the delta method
and full update so that possible realignments can be taken into
account. In principle, the CE4XXXX object table is not read for
delta updates. If a realignment is performed in the OLTP, no
further delta updates are possible as they would make the data
inconsistent between OLTP and BW. In this case, a new
initialization of the delta method is required.
o When the system reads data from the line items, make sure that the
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SAP Note 392635 - Information: Sources with BW extraction from the CO-PA
indexes from note 210219 for both the CE1XXXX (actual data) and
CE2XXXX (planning data) line item tables have been created.
Otherwise, you may encounter long-running selections. For
archiving, appropriate indexes are delivered in the dictionary as
of Release 4.5. These indexes are delivered with the SAP standard
system but still have to be created on the database.