In the case of the library cache latch, the parent latch is a
statistics-gathering structure to provide a summary of stats for
associated child latches. It also serves as a sort of namespace
placeholde, which makes the v$latch view possible. It is not gotten
itself. The child latches actually function as latches.
Amir Hameed wrote:
>
> Hi folks,
> Does anyone know the role of a parent latch in a 'parent & child'
> latches structure. For example, in case of library cache latches, what
> role does the parent latch play ? Are parent latches always held
> before accessing the child latch ?
>
> Any feedback will be appreciated.
>
> regards
> Amir
Received on Fri Apr 04 2003 - 08:49:35 CST
