Parallel Execution

SQL Server: why can’t I read the full table in parallel???

Why SQL Server keeps a full SELECT * serial: I/O cost is never divided across threads. Forcing parallelism burned 3x the CPU.

Elapsed time of Oracle Parallel Executions are not shown correctly in AWR

As the elapsed time (time it takes for a task from start to end, often called wall-clock time) per execution of parallel queries are not shown correctly in AWR-reports, I thought I setup a testcase to find a way to(…)