How To Fix RLFW418 - Table &1 locked on schema &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: RLFW - Messages for runlevel framework

• Message number: 418

• Message text: Table &1 locked on schema &2.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RLFW418 - Table &1 locked on schema &2. ?

  The SAP error message RLFW418 indicates that a specific table (denoted as &1) is locked in the specified schema (denoted as &2). This typically occurs when a database operation is attempted on a table that is currently locked by another transaction or user. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Concurrent Access: The table is being accessed by another transaction, which has placed a lock on it. This can happen during data updates, inserts, or deletes.
  Long-Running Transactions: A transaction that takes a long time to complete can hold locks longer than expected, causing other transactions to fail.
  Deadlocks: In some cases, two or more transactions may be waiting for each other to release locks, leading to a deadlock situation.
  Database Configuration: Certain database configurations or settings may lead to more aggressive locking behavior.
  
  Solutions:
  
  
  Identify the Lock:
  
  Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock on the table.
  Check the transaction logs or use database-specific tools to see active sessions and locks.
  
  
  
  Release the Lock:
  
  If you identify a session that is holding the lock and it is safe to do so, you can terminate that session using transaction SM12 or the database management tools.
  Ensure that you communicate with the user or process holding the lock to avoid data inconsistency.
  
  
  
  Optimize Transactions:
  
  Review the code or processes that are accessing the locked table to ensure they are optimized and do not hold locks longer than necessary.
  Consider breaking long transactions into smaller ones if possible.
  
  
  
  Database Configuration:
  
  Review and adjust database settings related to locking and transaction management if necessary. Consult with your database administrator for best practices.
  
  
  
  Retry Logic:
  
  Implement retry logic in your application to handle transient locking issues gracefully.
  
  
  
  Related Information:
  
  Transaction Management: Understanding how transactions work in SAP and the underlying database can help in managing locks effectively.
  Locking Mechanisms: Familiarize yourself with the different types of locks (e.g., exclusive, shared) and how they are used in SAP.
  Performance Monitoring: Regularly monitor performance and locking issues using tools like ST04 (Database Performance Monitor) and ST22 (Dump Analysis) to identify and resolve potential bottlenecks.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or database administrator for further investigation and resolution.