There are mainly three problems that database SQL optimizer cannot find the best way to process your SQL statements.
Cost estimation error
The cost estimation error is not only caused outdated stat...
I well remember the first time I saw it. August, 2016. I was looking at output from the DB2 for z/OS command -DISPLAY BUFFERPOOL(ACTIVE) DETAIL, issued on a DB2 11 system, that a client had sent to me...
When working with large data sets, it can be difficult to easily share data and collaborate on analysis. Beyond the time and resources it takes to create a data set for analysis, there are also securi...
