How To Fix MQ055 - SQL error when writing the log

SAP Error Message - Details

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 055

• Message text: SQL error when writing the log

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MQ055 - SQL error when writing the log ?

  The SAP error message MQ055 typically indicates an SQL error that occurs when the system is trying to write to the log. This can happen for various reasons, and understanding the cause is crucial for finding an appropriate solution. Here are some common causes, potential solutions, and related information:
  Causes:
  
  Database Connection Issues: The connection to the database may be interrupted or misconfigured.
  Insufficient Database Permissions: The user or service account may not have the necessary permissions to write to the log.
  Database Space Issues: The database may be out of space, preventing any new entries from being written.
  Corrupted Log Tables: The log tables in the database may be corrupted or not properly configured.
  SQL Syntax Errors: There may be an issue with the SQL syntax being used to write to the log.
  Database Locking: The log table may be locked by another process, preventing write operations.
  
  Solutions:
  
  Check Database Connection: Ensure that the database connection is active and properly configured. Test the connection to verify.
  Review Permissions: Check the permissions of the user or service account that is trying to write to the log. Ensure it has the necessary rights to perform write operations.
  Free Up Database Space: If the database is out of space, consider archiving old data or increasing the database size.
  Repair Corrupted Tables: If the log tables are corrupted, you may need to repair them or restore from a backup.
  Review SQL Statements: If you have access to the SQL statements being executed, review them for any syntax errors or issues.
  Check for Locks: Use database management tools to check if the log table is locked by another process. If so, resolve the locking issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to the MQ055 error. SAP frequently updates its knowledge base with solutions for known issues.
  Transaction Codes: Use transaction codes like SM21 (System Log) or ST22 (Dump Analysis) to gather more information about the error and its context.
  Database Logs: Review the database logs for any additional error messages or warnings that could provide more insight into the issue.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the steps you have already taken.
  
  By systematically addressing these potential causes and applying the suggested solutions, you should be able to resolve the MQ055 SQL error when writing the log in SAP.