We have DB2 10.5 FP1 BLU on SAP BW 7.4 SP6 on AIX 6.1 TL9 and converted the majority of BW table spaces. The hardest part was getting all the required notes applied up to 7.4 from 7.3.1
We then ran across problems where the majority of our bex queries short dumped. This turns out to be related to the input variable user exit EXIT_SAPLRRS0_001 and others.
See note 1823174 BW 7.4 Changes to Customer Specific Programs
You can use the Code Inspector Tool (transaction SCI) to systematically detect and resolve these problems. You should, if possible, run a check both before and after the upgrade. With the attached program, you can then identify all problems that did not occur until
Once we applied the adjustments, we were able to execute our bex queries and finding response times improving roughly 30%-40%. The tablespace sizes decreased 75%, i.e. 250GB to 64GB and more disk space is freed since the secondary indexes are no longer required and are deleted.
So far so good!
Lee Lewis