Need information-BW System administration-process chains

Hi gurus,
I need information about BW System administration-process chains
can anyone send me the docs related to
1)process chain modellin aspects
2)process chain monitoring &error handling
3)BW statistics and query tuning with aggregates
Thanks in advance..
regards
s ram

Hi,
Check these links:
http://help.sap.com/saphelp_nw04/helpdata/en/67/13843b74f7be0fe10000000a114084/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/8f/c08b3baaa59649e10000000a11402f/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/ce/dc87c1d711f846b34e0e42ede5ebb7/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/d5/e80d3dbd82f72ce10000000a114084/frameset.htm
Process Chain
process chain
BW STATISTICS
If you are asking abt the flags that you see in RSA1 -> Tools -> BW Stats...you can check BW Stats for each and every infoprovider. Whenever you create an infopprovider you should always decide whether you want to turn on the BW Stats for this infoprovider. This is a manual step and can be done in each and every box individually or can be transported across the systems. Coming to your question...BW Stats are of two kinds...
1) OLAP -
If you check this flag for an infoprovider...all the statistical data for the queries built on this infoprovider gets updated into the corresponding infocubes (0BWTC_C02 and 0BWTC_C03). An example would be like number of users that ran the report in a given time, the average run time of the query and so on. This data is of immense value in deciding the steps for performance tuning techniques like aggregates!
2) WHM (Warehouse Management) -
If you turn this flag on for an infoprovider, all the statistical data like how often the cubes are loaded, when are the requests deleted from the infocubes, data abt condensing of cubes and so on is loaded into the corresponding cubes like 0BWTC_C04, 0BWTC_C05, 0BWTC_C09 and 0BWTC_C11.
You have to activate the infopackages to load into these cubes and schedule them through process chain to run once in a while so that your statistical data is uptodate.
Production support for maintaining the process chains primarily involves monitoring activities of all the chains that are running in the background...
Errors in monitoring of process chains can be categorized into 4 different sections...
Master data - Full Update
Master data - Delta Update
Transaction data - Full Update
Transaction data - Delta Update.. in terms of loading of data which can be due to server shut down or system maintenance... errors due to incorrect entries in the OLTP system in which case you'll have to fix the errors in the PSA and manually load the data...
Otherwise it can have errors on Attribute change run being locked by some other job... Aggregate Roll up failing because of attribute change run being run at the same time... Problem with hierarchies and save hierarchies...
There can be problems with the data store activation if the ODS object contains any incorrect request sitting inside it... then, you need to delete the incorrect request and reload the data again...
In case of Transaction Delta failure, you'll have to request for a repeat either manually in the infopackage or using the repeat option if available on right clicking the load event...
For Master Data Delta failures, you need to do an Re-init by deleteing the previous initalization condition in the "initalization option for source systems" in the menu scheduler or reschedule the enitre chain... because, master data generally do not support repeat of last delta ...
Majority of the issues will be based on these things only..
****Assign Points If Helpful****
Regards,
Ravikanth
Message was edited by:
RK.PNV

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