How To Fix RSPLS082 - BW lock server: No free memory to extend lock table

SAP Error Message - Details

• Message type: E = Error

• Message class: RSPLS - General Messages

• Message number: 082

• Message text: BW lock server: No free memory to extend lock table

What causes this issue?

On the BW lock server you have chosen the option to manage the lock
table in the shared object memory of an application server. You need to
lock additional transaction data for InfoCube '&V1&' but no additional
space is available to extend the lock table of the BW lock server.

System Response

The BW lock server cannot be accessed for InfoCube '&V1&'.

How to fix this error?

Notify your system administrator.

Procedure for System Administrators

See transaction <ZH>RSPLSE</> for information about the application
server on which the lock table of the BW lock server is managed. Reserve
a sufficiently large memory area for the shared object memory area of
this server. Change profile parameter <ZH>abap/shared_objects_size_MB</>
for this purpose. For information about the sizing of this area for the
BW lock server, see SAP Note <ZH>928044</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSPLS082 - BW lock server: No free memory to extend lock table ?

  The SAP error message RSPLS082 indicates that the BW (Business Warehouse) lock server has run out of memory to extend the lock table. This can occur in environments where there are many concurrent users or processes trying to access the same data, leading to a situation where the lock table cannot accommodate new locks due to memory constraints.
  Causes:
  
  High Concurrency: A large number of users or processes trying to access the same data simultaneously can lead to an increased number of locks.
  Insufficient Memory Allocation: The memory allocated to the lock server may be insufficient for the current workload.
  Lock Table Size: The default size of the lock table may not be adequate for the volume of locks being created.
  Long-Running Transactions: Transactions that hold locks for extended periods can contribute to memory exhaustion.
  
  Solutions:
  
  
  Increase Memory Allocation:
  
  Adjust the memory settings for the lock server in the SAP BW system. This can typically be done in the instance profile parameters.
  Look for parameters like rdisp/lock_table_size and increase its value to allow for more locks.
  
  
  
  Optimize Lock Usage:
  
  Review the processes and queries that are generating locks. Optimize them to reduce the number of locks held at any one time.
  Ensure that long-running transactions are minimized or optimized to release locks more quickly.
  
  
  
  Monitor and Analyze Locks:
  
  Use transaction codes like SM12 to monitor locks and identify any long-held locks that may be causing issues.
  Analyze the workload and user activity to identify patterns that lead to high lock usage.
  
  
  
  Adjust Lock Table Size:
  
  If the lock table size is too small, consider increasing it. This can be done by modifying the instance profile parameters related to the lock table.
  
  
  
  Restart the Lock Server:
  
  In some cases, restarting the lock server can help clear out stale locks and free up memory.
  
  
  
  System Performance Tuning:
  
  Conduct a performance analysis of the BW system to identify bottlenecks and optimize overall system performance.
  
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may provide additional guidance or patches related to this error.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP BW documentation for best practices on managing locks and memory settings.
  
  By addressing the underlying causes and implementing the suggested solutions, you should be able to resolve the RSPLS082 error and improve the performance of your SAP BW system.