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Seperation of DB2 latch 24 coutner in EDM pool and prefetch counter
EDM pool latch suspend cannot be recognized in the DB2 statistics latch 24 counter, because suspends for prefetch are also counted in this field. In the DB2 statistics IFCID 001 there are QVLS latch counters, which are reporting the number of susp...
Lack of â€œbig pictureâ€ affects ability to tune DB2.When a DB2 performance problem is bought to our attention, the first thing that we need to determine is whether the problem is significant or not. Addressing an insignificant problem wastes tim...
The standard DB2 Accounting record has become increasingly bloated over the years. All of the information contained in each record is useful, but much of it is not necessary for basic Accounting purposes. Because the record is so big, and so expen...
Locking on XML auxiliary tables can be very CPU cost intensive and can lead to problems with the threshold LOCKS PER USER.Tune DB2s locking algorithms so that locking on XML-auxiliary tableswill be reduced.
Materialize a reorg pending change through part-level reorgs
At the moment an AREOR exception state can only be solved by reorganizing the whole (partitioned) tablespace in one go. We want to do the materialization in several sequential steps on a part-level base.
Replication Tasks (CDC) should be ZIIP offloadable
DB2 Analytics Accelerator for z/OS is a product which off loads workload from z/OS. All Task used for loading data, replicating updates, managing the IDAA box is new workload and should be cost efficient according to Mainframe. This means, that ev...
DB2 zOS LOAD SHRLEVEL CHANGE - provide # of rows processed
Enhancement request: When LOAD SHRLEVEL CHANGE utility abended, DB2 should provide the number of input records processed. Justification: If a LOAD SHRLEVEL CHANGE utility abended and then restarted successfully, the utility will skip the processed...
LOAD RESUME YES LOG NO support while loading to accelerator
We are using DB2 v10,z/OS v1.13,IBM DB2 Analytics Accelerator v4.1 in our environment for both our test and production DW environments. In our DW systems LOAD RESUME YES LOG NO is used for loading some of our tables. In IDAA, in a condition like t...
When getting ready to use mapped users, we have found that SQLTRACE does not distinguish the externally named users, but rather uses the local systerm's mapped user UID. This is a security and usability issue. From the usability standpoint, there ...
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