Long command runtime in DB kernel (receive/reply): <duration> seconds

The average time the database kernel processes SQL statements is longer than 100 milliseconds. Whether this is an actual bottleneck depends on the structure of the application. For example, mass statements in background processing often lead to long runtimes. Kernel wait times may also be caused by locks on SQL objects, physical I/O, dispatching due to prioritization of other tasks, and so on, thus increasing processing time.

If there is no additional information from x_wizard, check whether the database server is CPU-bound.