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