Hi,
Delta merge and Optimization compression is not happening in our SAP BW on HANA system. Because every smart merge hint is not successful due to the fact that system is not passing the smart merge decision function and failing with below comment.
"Column store error: [2482] table optimization was not indicated"
Note: But when I did forced compression optimization the size of the table reduced from 200 GB to 100 GB.
update "table" with parameters ('optimize_compression'='forced')
I tried checking the each condition in the smart merge decision function against that table. But I could not find the below cost function information for that table.
Cost function: DMR and DLS.
Table Type: Partitioned table - (Roundrobin 12 , with Range key)
Query 1:
Please let me know the view from where we can find the "Deleted main rows (DMR)" and "Delta Log Size (DLS)" for a column store table in HANA system.
Query 2:
I could not find the hana parameters "auto_decision_func" and "smart_decision_fucn" under optimize_compression section in indexserver.ini. Is it because of Hana version which we are using?
(Note: auto_merge_decision_func and smart_merge_decision_func parameters are available under mergedog section in indexserver.ini.)
Our Hana version is 85.02 and "min_hours_since_last_merge_of_part" is "Zero" under optimize_compression section.
Regards,
Nalla