How To Fix RSM1190 - System cannot delete U table because DSO &1 is locked

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM1 - Messages for AWB, Scheduler and Monitor (new)

• Message number: 190

• Message text: System cannot delete U table because DSO &1 is locked

What causes this issue?

If all the requests are activated, the U table of the DataStore objects
is deleted by a truncate table.
This only happens if there is no new loading job running in the
DataStore object or if there are old requests in the DataStore object
that have not yet been activated.

System Response

The system was unable to delete the update table because it could not
set a lock on DataStore object &V1& due to the fact that another lock
had already been set.

How to fix this error?

The next time requests are activated in the DataStore object the system
will attempt to delete the U table. The worst case scenario is that
access will be slower than usual during activation and more space on the
memory will be wasted.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSM1190 - System cannot delete U table because DSO &1 is locked ?

  The SAP error message RSM1190 indicates that the system is unable to delete a "U" (update) table because the DataStore Object (DSO) associated with it is locked. This typically occurs in the context of data warehousing and ETL processes within SAP BW (Business Warehouse).
  Cause:
  The error is caused by one of the following reasons:
  
  Active Processes: There may be ongoing processes (like data loads or transformations) that are currently using the DSO, which prevents the deletion of the associated update table.
  Locking Mechanism: SAP uses a locking mechanism to ensure data integrity during operations. If a DSO is locked, it means that another process is currently accessing it, and the system will not allow any modifications, including deletions.
  Long-running Transactions: Sometimes, long-running transactions or jobs can hold locks longer than expected, leading to this error.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Active Processes:
  
  Use transaction codes like SM37 to check for any active jobs or processes that might be using the DSO. Look for data load processes or transformations that are currently running.
  
  
  
  Terminate or Wait:
  
  If you find any active processes that are not needed, you can terminate them. However, be cautious with this approach, as it may lead to data inconsistencies.
  If the processes are legitimate and should be running, you may need to wait until they complete.
  
  
  
  Check Locks:
  
  Use transaction code SM12 to check for locks on the DSO. You can identify the user or process that is holding the lock and take appropriate action.
  
  
  
  Restart the Process:
  
  If the DSO was locked due to a failed process, you may need to restart the data load or transformation process after resolving the lock.
  
  
  
  System Administration:
  
  If the issue persists, consult with your SAP Basis team or system administrator to investigate further. They may need to check for system-level issues or perform additional troubleshooting.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM37: Job Monitoring
  SM12: Lock Entries
  RSA1: Data Warehousing Workbench (for DSO management)
  
  
  
  Documentation: Refer to SAP Help documentation for more details on DataStore Objects and their locking mechanisms.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message.
  
  
  By following these steps, you should be able to identify the cause of the locking issue and take appropriate action to resolve the error message RSM1190.