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SAP System Logs : Part 1 Understanding the Flow

Various processes and activities generate logs that provide valuable insights into system operations, errors, and performance. Understanding the flow of a process and when specific logs are written can greatly assist in troubleshooting, monitoring, and optimizing SAP environments. In this blog, we will explore the flow of a typical process and highlight the key moments when specific logs are generated.

Process Flow: Order Creation and Fulfillment




Order Creation:


User initiates the order creation process in the SAP system by entering relevant details and submitting the order.

Transaction code: VA01 (Create Sales Order)

Logs generated during order creation:


dev_w<X>: Work process logs capture the activities performed by the specific work process handling the order creation task.


dev_disp.log: Dispatcher log records the overall process of request distribution to work processes.


dev_enq.log: Enqueue server log tracks the locking activities during order creation.


Order Processing:


The SAP system processes the order by performing validations, checking stock availability, and updating relevant data.


Transaction codes: VA02 (Change Sales Order), VL01N (Create Outbound Delivery), and VL02N (Change Outbound Delivery)


Logs generated during order processing:


dev_w<X>: Work process logs capture the activities of the work processes handling order processing tasks.


dev_server<X>: Application server logs provide insights into the specific server's activities during order processing.


dev_rfc<X>: RFC logs track the RFC communications between SAP systems or external systems.


dev_j<XX>: Java stack logs record Java-specific activities if any Java-based applications are involved.


Order Fulfillment:


The SAP system fulfills the order by picking, packing, and shipping the products.

Transaction codes: LT03 (Create TO for Delivery), VL02N (Change Outbound Delivery), 


VT02N (Change Shipment)


Logs generated during order fulfillment:


dev_w<X>: Work process logs capture the activities of the work processes involved in order fulfillment.

dev_server<X>: Application server logs provide insights into the server activities during fulfillment.

dev_rfc<X>: RFC logs track the RFC communications related to order fulfillment.

dev_ms: Message server log records the message server activities related to load balancing and connection management.

dev_enq.log: Enqueue server log tracks locking activities during order fulfillment.


Order Confirmation:


User confirms the order completion and receives a confirmation notification.

Transaction code: VA03 (Display Sales Order)

Logs generated during order confirmation:


dev_w<X>: Work process logs capture the activities of the work processes handling order confirmation.

dev_disp.log: Dispatcher log records the overall process of request distribution to work processes.

 Part 2


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