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We use DB2 v10.5 DPF for a Warehouse Environment (40TB Data, ~9000 Users, 40 Tsd. Reports per day). We want to migrate the database to DB2 v188.8.131.52 BLU MPP with all tables column oriented. In this case we have checked the functionality for system...
If a user issues FOR BUSINESS_TIME AS OF clause against a bitemporal table, DB2 translates it to a where clause with two range predicates against business_time columns.
In our system following situation occurs quite frequently:
1) At all time...
Assuming that there is more than one temp tablespace with the same page size and 'IN TABLESPACE' clause is not specified in the DECLARE GLOBAL TEMPORARY TABLE command, then DB2 optimizer should allocate the temp tables across all temporary tablesp...
Support mixed row/column environments without requiring CUR_COMMIT=ON
We have recently run into a problem when we enable Cur_commit because of the locking behavior expected by some applications (they expect blocking). Therefore, we have to disable CC, but then that app cannot use blu. We want to give our plant the a...
Support additional single-byte encodings for column-organized tables
The latest updates to DB2 have added the support of codepage 809 (ISO8859-1) for databases using column-organized tables..This is good for many Western customers, who are able to avoid switching to Unicode (and paying the penalty of 2x or 3x chara...
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