Central Service - Enqueue Service

�Enqueue Service manages logical database locks, which are set by the executed application program in a server process.

�Enqueue Service synchronizes data across the cluster.

• The Enqueue service runs on the Central Services instance of the Java cluster. It manages the lock table in the main memory and receives requests for setting or releasing locks.

• It also maps the logical locks to the database.

• The Enqueue service can be configured for high availability, by setting it up with the replication server and a platform-independent high availability solution.

• The status of the Enqueue service are made accessible to the administrator via the Locking Adapter Service in the Visual Administrator.

• The terms Enqueue server and Enqueue service are used synonymously. The correct expression is that the Enqueue server is the program or process that provides the Enqueue service.

• Enqueue Service is represented by an en.sap process