How To Fix DG880 - Tables could not be locked; indicators not converted

SAP Error Message - Details

• Message type: E = Error

• Message class: DG - DG: Messages for Dangerous Goods Management

• Message number: 880

• Message text: Tables could not be locked; indicators not converted

What causes this issue?

The dangerous goods tables DGTMD and DGTPK could not be locked as
individual dangerous goods data records are already locked by other
users.

System Response

The indicators in the tables were not converted.

How to fix this error?

Request all other users to stop work in the dangerous goods master and
execute the program again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DG880 - Tables could not be locked; indicators not converted ?

  The SAP error message DG880, which states "Tables could not be locked; indicators not converted," typically occurs during the execution of a data conversion or migration process, particularly when working with the Data Migration Workbench or during system upgrades. This error indicates that the system was unable to lock certain database tables, which is necessary for ensuring data integrity during the conversion process.
  Causes:
  
  Concurrent Access: Other processes or users may be accessing the same tables, preventing the system from obtaining the necessary locks.
  Long-running Transactions: If there are long-running transactions that hold locks on the tables, this can lead to timeouts or failures in acquiring the locks.
  Database Configuration: Certain database settings or configurations may prevent the locking mechanism from functioning as expected.
  Insufficient Authorizations: The user executing the conversion may not have the necessary authorizations to lock the tables.
  System Performance Issues: High load on the database or system can lead to delays in acquiring locks.
  
  Solutions:
  
  Check for Active Sessions: Use transaction codes like SM66 or SM12 to check for active sessions or locks on the tables in question. If you find any long-running transactions, consider terminating them if appropriate.
  Retry the Process: Sometimes, simply retrying the conversion process after a short wait can resolve the issue if it was caused by temporary contention.
  Increase Timeout Settings: If the issue is related to timeouts, consider increasing the timeout settings for database locks.
  Review Authorizations: Ensure that the user executing the process has the necessary authorizations to lock the required tables.
  Database Performance Tuning: If the database is under heavy load, consider optimizing performance by tuning queries, increasing resources, or scheduling the conversion during off-peak hours.
  Check for Background Jobs: Ensure that there are no background jobs running that might be accessing the same tables.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the DG880 error for any specific patches or updates that may address the issue.
  Transaction Codes: Familiarize yourself with transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SLG1 (Application Log) to gather more information about the error context.
  Documentation: Review SAP documentation regarding data migration and conversion processes for best practices and troubleshooting steps.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance, providing them with detailed logs and context around the error.