What is shared lock in SAP (BC-CST-EQ - Enqueue)?

SAP Term: shared lock

• Component: BC-CST-EQ

• Component Name: Enqueue

• Description: Lock with which multiple ABAP users or ABAP sessions are assigned read access to the same data. ABAP users or ABAP sessions can request the lock multiple times since it is cumulated. As soon as an ABAP user or an ABAP session opens data with write access, other users and sessions have no read access.

Smart SAP Assistant

• Key Concepts: 
  A shared lock is a type of lock used in the BC-CST-EQ Enqueue component of SAP. It is used to ensure that multiple users can access the same data simultaneously without any conflicts. The shared lock allows multiple users to read the same data at the same time, but only one user can write to the data at a time. 
  
  How to use it: 
  To use a shared lock, a user must first acquire the lock by calling the enqueue function. This will ensure that no other user can write to the data while the lock is held. Once the user has finished writing to the data, they must then release the lock by calling the dequeue function. This will allow other users to access and write to the data. 
  
  Tips & Tricks: 
  When using a shared lock, it is important to remember that only one user can write to the data at a time. Therefore, it is important to ensure that all users are aware of when they need to acquire and release the lock in order to avoid any conflicts or errors. 
  
  Related Information: 
  For more information on shared locks and how they are used in SAP, please refer to SAP's official documentation on BC-CST-EQ Enqueue.