SAP R/3 dispatcher and work processes

Types of work processes:

• Message : Coordinates the communication between different instances of a single SAP R/3 system. Used for Logon purpose and load balancing.

• Dispatcher : Redirect the request from GUI client to free process.

• Dialog : Interpreting the ABAP code and execute the business logic. Used for interactive online processing.

• Batch : For Background jobs.

• Enqueue : Single “Central Lock Management Service” that controls the locking mechanism between the different application servers and the database.

• Update : Responsible for consistency in asynchronous data changes.

• Gateway : Used for transport of bigger amount of data between application servers as well as external (non SAP) systems that communicate with SAP.