Which statement is true about DB time in V$$YS_TIME_MODEL?
Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?
Multiple sessions are inserting data concurrently into a table that has an LOB column.
At some point in time, one of the sessions cannot find available space in the LOB segment and needs to allocate a new extent.
Which wait event will be raised in the other sessions that need space in the LOB column?
Examine this output of a query of VSPGA_TAPGET_ADVICE:
Which statements is true'
A database supporting a mixed workload is hosted on a server with 64 CPUs.
A large number of free buffer waits and buffer busy waits occur affecting performance.
The buffer cache size was then increased but after a few hours, the same wait events occur more often than before the change.
Examine these parameter settings:
Which two actions can help reduce the number of these waits7
