多选题What is true about a background engine? （）(Choose two.)AIt is a server-side PL/SQL procedure.BWhen executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.CIt executes deferred activities in decreasing order of their Co
题目
多选题
What is true about a background engine? （）(Choose two.)
A
It is a server-side PL/SQL procedure.
B
When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.
C
It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).
D
It would fail if another background engine process is started to handle the same type of activities within the same item type.
E
During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.