How To Fix S1198 - Could not lock table MONI, try again

SAP Error Message - Details

• Message type: E = Error

• Message class: S1 - Statistik / SAP-Monitor

• Message number: 198

• Message text: Could not lock table MONI, try again

What causes this issue?

A lock must be set for the data to convert it. However, this was not
possible.

System Response

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

How to fix this error?

Use transaction SM12 to check who is holding this lock and check why
they are doing so. After th lock has been released, start XPRA again.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S1198 - Could not lock table MONI, try again ?

  The SAP error message S1198, which states "Could not lock table MONI, try again," typically occurs when a transaction attempts to access a database table that is currently locked by another process. This can happen in various scenarios, such as when multiple users or processes are trying to access or modify the same data simultaneously.
  Causes:
  
  Concurrent Access: Another user or process is currently accessing the MONI table, causing a lock.
  Long-Running Transactions: A transaction that takes a long time to complete may hold a lock on the table longer than expected.
  Deadlocks: In some cases, a deadlock situation may arise where two or more processes are waiting for each other to release locks.
  System Performance Issues: High system load or performance issues can lead to delays in releasing locks.
  
  Solutions:
  
  Retry the Operation: Often, simply waiting a moment and trying the operation again can resolve the issue if the lock is temporary.
  Check for Active Sessions: Use transaction codes like SM12 (to view locks) and SM21 (to check system logs) to identify which user or process is holding the lock on the MONI table.
  Terminate Long-Running Transactions: If you identify a transaction that is holding the lock for an extended period, you may need to terminate it using transaction code SM37 (to monitor jobs) or SM12 (to delete locks).
  Optimize Transactions: Review and optimize the transactions that access the MONI table to ensure they complete quickly and release locks promptly.
  Increase System Resources: If the issue is related to system performance, consider increasing the resources available to the SAP system (e.g., CPU, memory).
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage locks.
  SM21: To view system logs for errors and warnings.
  SM37: To monitor background jobs and their statuses.
  
  
  SAP Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team for further investigation and resolution.
  Documentation: Refer to SAP documentation for more details on locking mechanisms and best practices for managing database locks.
  
  By following these steps, you should be able to diagnose and resolve the S1198 error effectively.