library cache lock

This event controls the concurrency between clients of the library cache. It acquires a lock on the object handle so that either:

  • One client can prevent other clients from accessing the same object

  • The client can maintain a dependency for a long time (for example, no other client can change the object)

This lock is also obtained to locate an object in the library cache.

Wait Time: 3 seconds (1 second for PMON)

Parameter Description

handle address

Address of the object being loaded

lock address

Address of the load lock being used. This is not the same thing as a latch or an enqueue, it is a State Object.

mode

Indicates the data pieces of the object which must be loaded

namespace

See "namespace"

See Also: