How To Fix MC684 - Error from database interface: (& &-&)

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 684

• Message text: Error from database interface: (& &-&)

What causes this issue?

A serious error occurred while reading or saving ABAP/4 Dictionary
tables with the internal data interface of the ABAP/4 Dictionary. This
error is probably caused by a database error or an inconsistency in the
ABAP/4 Dictionary data. The internal routine in which the error
occurred and the error code are output in the error message.

System Response

The action is cancelled and the data that has been changed is reset
(rollback).

How to fix this error?

Look at the system log to see whether the problem is described there in
greater detail. Inform SAP of the error, describing the situation under
which it arose.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC684 - Error from database interface: (& &-&) ?

  The SAP error message MC684, which states "Error from database interface: (& &-&)", typically indicates an issue with the database interface when trying to access or manipulate data in the SAP system. This error can arise from various underlying causes, and here are some common reasons, potential solutions, and related information:
  Causes:
  
  Database Connectivity Issues: There may be a problem with the connection between the SAP application server and the database server.
  Database Locking: The database table or record you are trying to access may be locked by another process.
  Data Consistency Issues: There could be inconsistencies in the data that the database cannot handle.
  Insufficient Authorizations: The user may not have the necessary permissions to access the data.
  Database Configuration Issues: There may be misconfigurations in the database settings or parameters.
  Corrupted Data: The data in the database might be corrupted or not in the expected format.
  
  Solutions:
  
  Check Database Connection: Ensure that the database server is up and running and that the connection parameters in the SAP system are correctly configured.
  Review Locks: Use transaction codes like SM12 to check for any locks on the database tables and resolve them if necessary.
  Data Consistency Check: Run consistency checks on the relevant tables using transaction codes like SE14 or DB02 to identify and fix any inconsistencies.
  User Authorizations: Verify that the user has the necessary authorizations to perform the action that triggered the error.
  Database Logs: Check the database logs for any additional error messages or warnings that could provide more context about the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches or updates.
  Consult Basis Team: If the issue persists, consult your SAP Basis team for further investigation, as they can analyze the database and system logs in more detail.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM21 (System Log), ST22 (Dump Analysis), and DB02 (Database Performance Analysis) for troubleshooting.
  SAP Support: If you cannot resolve the issue, consider reaching out to SAP Support with detailed information about the error, including the context in which it occurred and any relevant logs.
  Documentation: Review SAP documentation related to database management and error handling for additional insights.
  
  By following these steps, you should be able to diagnose and potentially resolve the MC684 error in your SAP system.