How To Fix KE_CHACO160 - Error occurred when locking table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: KE_CHACO - Message class for operating concern merge/split

• Message number: 160

• Message text: Error occurred when locking table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message KE_CHACO160 - Error occurred when locking table &1 ?

  The SAP error message KE_CHACO160, which states "Error occurred when locking table &1," typically occurs in the context of controlling (CO) or profitability analysis (CO-PA) when the system is trying to lock a table for data processing. This error can arise due to various reasons, including database locks, contention issues, or problems with the underlying database.
  Causes:
  
  Database Locking Issues: The table that the system is trying to lock may already be locked by another process or user.
  Long-Running Transactions: If a transaction is taking too long to complete, it may hold locks longer than expected, causing contention.
  Deadlocks: Two or more processes may be waiting for each other to release locks, leading to a deadlock situation.
  Insufficient Authorizations: The user may not have the necessary authorizations to lock the table.
  System Performance Issues: High load on the database or application server can lead to delays in acquiring locks.
  
  Solutions:
  
  Check for Existing Locks: Use transaction codes like SM12 (for lock entries) to check if there are existing locks on the table. If you find locks that are no longer needed, you can delete them if you have the necessary authorizations.
  Review Long-Running Transactions: Identify any long-running transactions that may be holding locks and investigate why they are taking longer than expected.
  Increase Timeout Settings: If applicable, consider increasing the timeout settings for database locks to allow more time for processes to complete.
  Optimize Performance: Analyze and optimize the performance of the database and application server to reduce contention and improve response times.
  Check Authorizations: Ensure that the user executing the transaction has the necessary authorizations to lock the required tables.
  Restart the Process: If the issue persists, you may need to restart the process or transaction that is causing the lock issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SM21 (system log), and ST22 (dump analysis) to diagnose issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  System Monitoring: Use tools like ST03N (workload analysis) and ST04 (database performance) to monitor system performance and identify bottlenecks.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.