SAP ABAP Lock concept and enqueue

Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Database (implicit) LUW ,[object Object],[object Object],[object Object],[object Object],[object Object],Database LUW Program starts Program ends Commit or Rollback update, delete etc **This is for NON SAP Environment – see subsequent slides for SAP Environment **

Why SAP LUWs? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why SAP LUWs? (continued) ,[object Object],[object Object],[object Object],[object Object],[object Object]

SAP Architecture ,[object Object],Work Processes beyond programmers control

SAP LUW Commands ,[object Object],[object Object],[object Object],[object Object],[object Object]

Database Locks ,[object Object],[object Object]

SAP Locks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Creating SAP Locks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

ENQUEUE work process (server) ,[object Object],[object Object],[object Object],[object Object]

Lock Command ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Buffering of Database Tables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SAP ABAP Lock concept and enqueue

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SAP ABAP Lock concept and enqueue