How To Fix IUUC_TAB192 - Cannot get x lock on table &1 (tried &2 times)

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_TAB - IUUC: Messages for table analysis

• Message number: 192

• Message text: Cannot get x lock on table &1 (tried &2 times)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_TAB192 - Cannot get x lock on table &1 (tried &2 times) ?

  The SAP error message IUUC_TAB192 indicates that the system is unable to acquire an exclusive lock (X lock) on a specified table after multiple attempts. This typically occurs in scenarios involving database operations where a lock is required to ensure data integrity during updates or modifications.
  Cause:
  
  Concurrent Access: Another transaction or process is holding a lock on the table, preventing your transaction from acquiring the necessary lock.
  Long-Running Transactions: A transaction that takes a long time to complete can hold locks for an extended period, leading to contention.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks can lead to this error.
  Lock Configuration: The configuration of the database or the application may not be optimized for the workload, leading to excessive locking.
  
  Solution:
  
  
  Identify Blocking Transactions:
  
  Use transaction codes like SM12 (for lock entries) to identify which user or process is holding the lock on the table.
  Use SM21 (system log) to check for any related errors or warnings.
  
  
  
  Terminate Blocking Sessions:
  
  If you identify a session that is holding the lock unnecessarily, you may need to terminate it using SM12 or SM50 (process overview).
  
  
  
  Optimize Long-Running Transactions:
  
  Review and optimize any long-running transactions to ensure they complete more quickly and release locks sooner.
  
  
  
  Increase Lock Wait Time:
  
  If appropriate, you can increase the lock wait time in the database configuration, but this is generally a temporary solution and should be approached with caution.
  
  
  
  Review Application Logic:
  
  Ensure that your application logic is designed to minimize locking contention. This may involve breaking up large transactions into smaller ones or using more granular locking strategies.
  
  
  
  Database Configuration:
  
  Review the database configuration for lock settings and adjust them if necessary to better handle concurrent access.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage lock entries.
  SM21: View system logs for errors and warnings.
  SM50: Monitor active processes and their status.
  
  
  
  SAP Notes: Check SAP Notes related to IUUC_TAB192 for any specific patches or updates that may address this issue.
  
  
  Performance Monitoring: Regularly monitor system performance and locking behavior to proactively address potential issues before they lead to errors.
  
  
  Documentation: Refer to SAP documentation for best practices on managing database locks and optimizing transaction performance.
  
  
  By following these steps, you should be able to diagnose and resolve the IUUC_TAB192 error effectively.