on 11-21-2016 1:34 PM
Hi Folks,
I have gone through several threads since I have not found correspoding one...
We have setup a HANA platform for a critical high speed response activity. The database serves about 7 million customers. Out of the 7 million customers, status of about 1.5 million customers is regularly updated by a separate OLTP/source system. We have set the Delta Merge trigger to about 2 million records. Our concern is that we do not want a delayed response to customer queries if there is a query during a Delta Merge operation against the main table. So, my question is:
1.Can we schedule the Delta Merge only at a pre-scheduled time?
2.Will the table be available for responding to customer queries if it kicks in during the day?
3.We also do not want the incoming stream to be blocked during a delta merge.
To put it very simply, don’t worry about it. HANA is a strong OLTP system being the platform of choice at SAP – S/4 HANA is an example, wherein multiple tables are regularly updated and increasingly mission-critical activities are being deployed on it.
1.Running at Pre-scheduled time :
ALTER TABLE TABLE_NAME {ENABLE | DISABLE} AUTOMERGE
MERGE DELTA OF '(table_name)' WITH PARAMETERS ('FORCED_MERGE' = 'ON')
2 & 3 Responsive behavior & Incoming Stream blocking:
You can find lot more details at:
https://help.sap.com/saphelp_hanaplatform/helpdata/en/bd/9ac728bb57101482b2ebfe243dcd7a/content.htm
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Dear Kapil,
Thanks for your early and prompt response.
I got the clarification regarding my question hence I am marking this answer as correct.
Thanks,
Amol Samte
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