How To Fix SCTS_AIM056 - Table lock modes changed to "completely locked" for this AIM/API.

SAP Error Message - Details

• Message type: E = Error

• Message class: SCTS_AIM - Messages for the AIM meta data repository

• Message number: 056

• Message text: Table lock modes changed to "completely locked" for this AIM/API.

What causes this issue?

During a ZDM upgrade, some database tables can be accessed by both the
productive application and the after-import methods (AIM) in parallel.
For these tables, it must be ensured that the productive application
does not write data into the key areas accessed (read or write access)
by the after import method. To ensure this, the AIM author declares in
which way these key ranges are blocked in the productive application.
The most important options are the lock modes "P " = "Write access to
the relevant key ranges is blocked" and "X" = " Write access to the
complete table is blocked".
In cases where the key ranges accessed by the AIM are blocked by special
locking mechanisms (such as lock mode = "P") in the application code
(which exist from a particular application release and support package
level (R/SPL)), it may happen that the source release of the current
upgrade is lower than R/SPL. In this case, the particular locking
mechanisms are not in place. This can cause data inconsistencies after
the upgrade.
To avoid these inconsistencies, the upgrade tool sets these tables as
read-only for the productive application on database level. For example,
the upgrade tool changes the classification provided by the AIM author
from "P" to "X".
For the AIM inspected here, the upgrade tool has re-classified the
tables with lock mode "P" to lock mode "X".

System Response

The upgrade tool informs you about this fact by writing this message to
the upgrade log.

How to fix this error?

No action required.

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 SCTS_AIM056 - Table lock modes changed to "completely locked" for this AIM/API. ?

  The SAP error message SCTS_AIM056 indicates that a table lock mode has changed to "completely locked" for a specific Application Interface Framework (AIM) or Application Programming Interface (API). This typically occurs when there are issues with data consistency or when a process is trying to access a table that is currently locked by another transaction.
  Cause:
  
  Concurrent Access: Multiple processes or transactions are trying to access the same table simultaneously, leading to a lock conflict.
  Long-Running Transactions: A transaction that takes a long time to complete can hold locks longer than expected, causing other transactions to wait or fail.
  Deadlocks: Situations where two or more transactions are waiting for each other to release locks, leading to a complete lock situation.
  Configuration Issues: Incorrect configuration of the AIM/API or the underlying database can lead to unexpected locking behavior.
  
  Solution:
  
  
  Identify Locking Transactions:
  
  Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) to identify which transactions are holding locks on the table.
  Analyze the lock entries to determine the source of the lock.
  
  
  
  Terminate Long-Running Transactions:
  
  If a transaction is holding a lock for too long, consider terminating it using SM12 or SM50 (to monitor and manage work processes).
  
  
  
  Optimize Transactions:
  
  Review and optimize the code of the transactions that are causing locks. Ensure that they are efficient and do not hold locks longer than necessary.
  
  
  
  Increase Lock Timeout:
  
  If appropriate, consider increasing the lock timeout settings in the system configuration to allow transactions more time to complete before being forced to fail.
  
  
  
  Review Configuration:
  
  Check the configuration of the AIM/API to ensure it is set up correctly and that there are no issues that could lead to locking problems.
  
  
  
  Database Maintenance:
  
  Perform regular database maintenance to ensure that the database is healthy and that there are no underlying issues causing locking problems.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the SCTS_AIM056 error. SAP Notes often provide patches or workarounds for known issues.
  Documentation: Review the official SAP documentation for the Application Interface Framework and any related components to understand how locking works and best practices for managing it.
  Performance Monitoring: Implement performance monitoring tools to keep track of transaction performance and locking behavior in real-time.
  
  If the issue persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.